Re: [Sursound] practical HOA encoding
The incredibly wise Richard Lee wrote: The 2nd type of source/object are artificial. HOA is most useful for shoot-them-up games and other virtual reality stuff. You pan the (mono) bad guy to someplace in your HOA space BUT THIS STUFF CAN USUALLY BE SET AT AN INFINITE DISTANCE SO NO NFC IS REQUIRED This morning, I watched & listened to a Facebook video where the designer recorded a large jazz orchestra in a very large concert hall (floor seats and two levels of balconies) with a whole bunch of spot mics. He then assembled a third-order ambisonic recording. In a way, these spot mics are artificial sources. They're mono and panned to someplace in HOA space. (I'd love to post a link to the video, but the author removed it.) There was a large ~20-piece jazz orchestra on the stage in three rows. Two soloists stood at the front of the stage. And a choir sang from the second balcony at the left of the stage. As you panned around, it sounded great, except... ... the rear row of musicians on the stage (bass guitar, drummer, trumpets) all sounded like they were in the front row. The choir in the balcony sounded like they were standing behind one of the soloists. This sounded even more un-natural as you panned around. There was no distance compensation at all. And it sounded very, very strange. I kept looking for instruments only to find that they weren't where I expected them - they were way out there, instead of where I was hearing them (which was very close by). I suspect that a big part of the problem was due to the lack of ambience in the spot mics. The ambience is a really important cue for distant sources. Len Moskowitz (moskow...@core-sound.com) Core Sound LLC www.core-sound.com Home of OctoMic and TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Decoding first order ambisonics on higher order decoders?
Bo-Erik Sandholm wrote: Which decoder configuration for FOA and TOA in to binaural is the best? We've been using IEM BinauralDecoder. It's quite nice. It automatically senses what order it's being fed and configures itself accordingly. You might contact Daniel Rudrich at IEM to ask about details. https://plugins.iem.at/docs/plugindescriptions/#binauraldecoder Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of OctoMic and TetraMic -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20190515/c38350d5/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
[Sursound] Recordings Made With Core Sound OctoMic (Second-order Ambisonic Microphone)
You can download recordings made with the Core Sound OctoMic here: www.core-sound.com/OctoMic/13.php They are available in B-format (second-order), binaural and stereo. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of OctoMic and TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Passive small speaker advice
Bruce Wiggins wrote: We ... are looking for advice on small speakers we could use to replace the minipods with. KEF LS50 Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of OctoMic and TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Comparison Sennheiser Ambeo mic vs. Rode NT-SF1?
Steve Boardman wrote: Apparently it uses adaptive parametric processing, ala Harpex. ... Apparently so. There has been a report that the encoder introduces unpleasant sonic artifacts if the NT-SF1 is in motion during recording. Links to recordings made that way were posted on Facebook, and I've heard them. This report is yet to be duplicated. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.cores-sound.com Home of OctoMic and TetraMic. ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Comparison Sennheiser Ambeo mic vs. Rode NT-SF1?
They're both similar in that they are both first-order microphones NT-SF1 is slightly smaller and lighter than the Ambeo. Length (millimeters / inches) TetraMic: 133mm / 5.2" OctoMic: 128mm / 5.0" NT-SF1: 193mm / 7.6" Ambeo: 215mm / 8.5" Weight (grams / ounces) TetraMic: 85gm / 3 oz. OctoMic: 150gm / 5.3 oz. NT-SF1 315gm / 11.1 oz. Ambeo: 410gm / 14.5 oz. You can see a side-by-side photo of the four here: https://www.facebook.com/permalink.php?story_fbid=2462399327110451 Neither of the two is provided with individualized calibrations - they use a single generic calibration for every instance of the microphone. This is not optimal. Neither is designed to be re-calibrated as they age and drift. A recent test posted on Facebook showed that the NT-SF1 has slightly lower self-noise. See the details here: https://www.facebook.com/groups/SpatialAudioVRARMR/permalink/1530228073787181/ Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of OctoMic and TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] OctoMic VR 8k Video, New Files on OctoMic Recording > Download Page
Here's a link to the 2nd-order B-format file (audio only): https://www.dropbox.com/s/gie4uuqedr53vic/Venice Gondola (Second Order AmbiX audio only for youtube and facebook).wav Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of OctoMic and TetraMic -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20181109/8100698c/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] OctoMic VR 8k Video, New Files on OctoMic Recording Download Page
Thanks to Phillip, I've posted the link to the econd-order file on the web page: www.core-sound.com/OctoMic/13.php . https://www.dropbox.com/s/t02iz1cj1ccblmi/Venice%20Gondola%20VR%20%28Oculus%20Go%29.mkv Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of OctoMic and TetraMic - On Tue, Nov 06, 2018 at 02:23 PM, Eric Benjamin wrote: I’d love to hear the second order version. ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
[Sursound] OctoMic VR 8k Video, New Files on OctoMic Recording Download Page
Phillip Westbrook posted on Facebook: "A recent production done in Venice Italy with the OctoMic! The second order version of course sounds better, but I'm really enjoying how easy the OctoMic is to use." https://www.youtube.com/watch?v=qG_uKfmBAtk [YouTube videos currently offer only first-audio ambisonic audio.] - In addition, Core Sound posted a few new files to the OctoMic Recording Download web page: www.core-sound.com/OctoMic/13.php Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of OctoMic and TetraMic -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20181106/b031616d/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Looking for mic advice
Jonathan Kawchuk wrote: Has anyone checked out the Nevaton VR microphone ? Incredibly low self-noise if you are looking to do nature recording. Curious what the spatial resolution will be like and what calibration looks like. We heard on the Facebook groups from Nevaton's customers that Nevaton doesn't plan to provide any software, nor to provide any calibration information for this microphone. That's incredible if it's true. Spatial resolution, at best, will be first-order. And that's only if they got the electro-mechanical design and the calibration right. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of OctoMic and TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Octomic Impulses Up North
Jonathan Kawchuk wrote: I'm gathering some impulses in at-risk environments in western Canada and I'm looking for someone to rent an Octomic from. I thought I'd see if anyone in the community is interested or has any leads. Getting 2nd order resolution is pretty important for this particular use case. Audio Rents in LA has one for rent: https://audiorents.com/rental/2/activity/Field-Recording.html Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of OctoMic and TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Sursound Digest, Vol 121, Issue 11
Justin wrote: it's http://www.zylia.co/ Thanks, but I still can't seem to find a web page with its basic specifications. Perhaps I'm missing an obvious link. Len Moskowitz (mosko...@core-sound.com)Core Sound LLC www.core-sound.com Home of OctoMic and TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Looking for mic advice
Eduardo Patricio wrote: The microphone will soon be shipped to Indie gogo backers. Distribution to stores in Europe and the US will follow. I couldn't find the basic specifications (frequency response, self noise) for this microphone. Could you point us to a web page that has them, please? Len Moskowitz Core Sound LLC www.core-sound.com Home of OctoMic and TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Looking for mic advice
Hi Søren, In my opinion, second-order ambisonic microphones perform better than first-order mics in every way. I suggest that if you are able, to join Facebook's "Spatial Audio in VR/AR/MR" group. You can ask your project questions there of probably the most knowledgable immersive sound engineers on the planet. We can recommend the Zoom F8 (and now the F8n) without reservation. For under $1000, it provides excellent, low noise pre-amps, very well-matched channels, and the ability to simply gang channels to ease the recording process. An alternative is the Sound Devices MixPre 10T. You can see shipping prices on our ordering page. It's between $78 and $93 to Denmark. We don't have or collect VAT in the US, so you'd be responsible for paying VAT to your country's Customs agent. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of OctoMic and TetraMic Re. Price: the list price is 1999 USD for Octomic and you mention that it is just a little above Sennheiser Ambeo (which i can buy in Europe incl. tax AND shipping for 1920 USD at Thomann) Is your price ex. Tax and shipping? I live in Denmark. Med venlig hilsen/Best regards Søren Bendixen Composer & Producer soerenbendixen.com Den 12. aug. 2018 kl. 20.37 skrev Len Moskowitz : When selecting an ambisonic microphone, I'll suggest a few things you should look and listen for. All of the older Soundfield microphones (all other than the SPS200) used hardware to apply their calibrations. Each microphone was individually measured and a calibration correction was built into the hardware processor. As the microphones aged, they fell out of calibration. To restore their performance, you had to send the microphone and the processor back to Soundfield for re-calibration. This was expensive, and ideally had to be done every two or three years. When Soundfield went through multiple changes of owndership, the knowledge to re-calibrate (and even to initially calibrate) was lost. With the introduction of our TetraMic in late 2006, the hardware was no longer needed. We calibrated each and every TetraMic individually and provided a calibration file that was applied with an A- to B-format encoder plugin. Soundfield later came out with their SPS200. Instead of providing individual calibration files for each SPS200, they initially matched all the capsules at the factory to the same standard, and then provided a single generic calibration correction that they expected would work for all SPS200s. It turns out that as the capsules on the SPS200s aged, a single generic calibration file couldn't possibly work for all of them. And they never offered a re-calibration service. Eventually, based on what we've measured, they lost the ability to even match the capsules correctly initially at the factory - eachone is very different than the next. The result of using a single generic calibration correction file is that they can't correct for a lot of things. One of them is divergence at low frequencies. So what they did was to cut off the SPS200's low frequency response at around 90 Hz. The Sennheiser Ambeo takes the same approach, and it also has a 90 Hz low frequency cutoff. The new Rode mic (as of yet unreleased) seems to follow the same approach. And of course, as the capsules age, even if they were well-matched from the factory (which SPS200s are not now, but Ambeos seem to be), after two or three years, they will not be. Neither Soundfield (now owned by Rode) nor Sennheiser offers re-calibration services. SPS200 and Ambeo are first-order tetrahedral array microphones. TetraMic is Core Sound's first-order microphone. It is probably the best-selling first-order microphone in the world. Each one is individually calibrated. Re-calibration is recommended every two to three years. Low frequency response goes down to below 30 Hz. (We've calibrated them on special order down to 10 Hz.) It's calibration is tuned to sound like a DPA 4003. First-order tetrahedral arrays are good for some things, but they're weak at others. If properly calibrated, its pickup patterns are better than pretty much any mono mic. But its listening sweet spot is only about the size of a human head. Outside of that you'll start to hear some loss of localization cues. Its localization cues are not particularly strong, which is why the VR industry tends to use them for ambience, but supplements them with spot mics for stronger localization cues. Second-order ambisonic mics have a much, much larger sweet spot, and much, much stronger localization cues. They can synthesize second-order pickup patterns that have much more directional selectivity, rejecting much more sound from unwanted directions. That let's you get at least twice as far from the sound source as a mono mic without losing directional selectivity. (Mono mics are limited to first-order pickup patterns;
Re: [Sursound] Looking for mic advice
When selecting an ambisonic microphone, I'll suggest a few things you should look and listen for. All of the older Soundfield microphones (all other than the SPS200) used hardware to apply their calibrations. Each microphone was individually measured and a calibration correction was built into the hardware processor. As the microphones aged, they fell out of calibration. To restore their performance, you had to send the microphone and the processor back to Soundfield for re-calibration. This was expensive, and ideally had to be done every two or three years. When Soundfield went through multiple changes of owndership, the knowledge to re-calibrate (and even to initially calibrate) was lost. With the introduction of our TetraMic in late 2006, the hardware was no longer needed. We calibrated each and every TetraMic individually and provided a calibration file that was applied with an A- to B-format encoder plugin. Soundfield later came out with their SPS200. Instead of providing individual calibration files for each SPS200, they initially matched all the capsules at the factory to the same standard, and then provided a single generic calibration correction that they expected would work for all SPS200s. It turns out that as the capsules on the SPS200s aged, a single generic calibration file couldn't possibly work for all of them. And they never offered a re-calibration service. Eventually, based on what we've measured, they lost the ability to even match the capsules correctly initially at the factory - eachone is very different than the next. The result of using a single generic calibration correction file is that they can't correct for a lot of things. One of them is divergence at low frequencies. So what they did was to cut off the SPS200's low frequency response at around 90 Hz. The Sennheiser Ambeo takes the same approach, and it also has a 90 Hz low frequency cutoff. The new Rode mic (as of yet unreleased) seems to follow the same approach. And of course, as the capsules age, even if they were well-matched from the factory (which SPS200s are not now, but Ambeos seem to be), after two or three years, they will not be. Neither Soundfield (now owned by Rode) nor Sennheiser offers re-calibration services. SPS200 and Ambeo are first-order tetrahedral array microphones. TetraMic is Core Sound's first-order microphone. It is probably the best-selling first-order microphone in the world. Each one is individually calibrated. Re-calibration is recommended every two to three years. Low frequency response goes down to below 30 Hz. (We've calibrated them on special order down to 10 Hz.) It's calibration is tuned to sound like a DPA 4003. First-order tetrahedral arrays are good for some things, but they're weak at others. If properly calibrated, its pickup patterns are better than pretty much any mono mic. But its listening sweet spot is only about the size of a human head. Outside of that you'll start to hear some loss of localization cues. Its localization cues are not particularly strong, which is why the VR industry tends to use them for ambience, but supplements them with spot mics for stronger localization cues. Second-order ambisonic mics have a much, much larger sweet spot, and much, much stronger localization cues. They can synthesize second-order pickup patterns that have much more directional selectivity, rejecting much more sound from unwanted directions. That let's you get at least twice as far from the sound source as a mono mic without losing directional selectivity. (Mono mics are limited to first-order pickup patterns; they can't do second-order patterns.) Our OctoMic is the only second-order mic being offered commercially. It's priced only a little higher than an Ambeo. We suggest that you have a look and a listen. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of OctoMic and TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Multi-channel Dante Mic Pre?
Thanks, Brian. That Auvitran Toolbox looks like a very flexible platform. With a single Sound Device 970 recorder (64 tracks), and either a DAD AX32 (or four RME Octamic XTCs feeding the Auvitran ADAT interface), it looks like recording 32 mic channels (or more) will be pretty straightforward. For lower cost, we could replace the RMEs with MOTU 8Pre USBs. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic - Brian FG Katz wrote: To add a bit into this discussion, we have recently invested in the Auvitran audio toolbox platform, a modular interface which allows for the construction of a Dante interface with a variety of input/output modules. These include XLR mic preamps as well as ADAT I/O so that we can also use our existing hardware (RME octamic, etc.) over Dante. ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Multi-channel Dante Mic Pre?
Wow - thanks for that lead! If I read that correctly, the DAD AX32 can have up to 48 mic pres over Dante. Pair it with the Sound Devices 970 64-track Dante recorder. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic - On Thu, Aug 09, 2018 at 09:50 AM, Jesus Ramallo wrote: DAD AX32 ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
[Sursound] Multi-channel Dante Mic Pre?
Does anyone know of an 8 (or more than 8) channel mic pre that operates over Dante networks? All leads appreciated! Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Big Pre-amps?
We found Antelope Audio's (https://en.antelopeaudio.com) MP32 32-channel mic pre-amp, and its Orion and Goliath interfaces. The interfaces come in USB, Thunderbolt and HDX versions, and are expandable via MADI. 64 channels is do-able. Has anyone used these? Any comments on sound quality and software stability? Len Moskowitz (mosko...@panix.com) Core Sound LLC www.core-sound.com Home of OctoMic and TetraMic - A customer is consider using a few OctoMics simultaneously, recording to computer. Each OctoMic requires 8 channels of pre-amps. They'll need up to 72 channels. Ideally, the pre-amps should have digitally-set and gangable trims. Any suggestions regarding pre-amps? -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20180605/f1fbce30/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
[Sursound] Big Pre-amps?
A customer is consider using a few OctoMics simultaneously, recording to computer. Each OctoMic requires 8 channels of pre-amps. They'll need up to 72 channels. Ideally, the pre-amps should have digitally-set and gangable trims. Any suggestions regarding pre-amps? Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20180604/fbd887c7/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Sennheiser Ambeo recording headphones
Jon Honeyball wrotes: Now I quite like the Ambeo headphone/binaural mic thing. Its interesting, its small, its cute, and the recordings are adequate (even though you only get a choice of two fixed record levels ? errr, why???) The Apogee software is incomplete, buggy and doesn?t do what it claims. Yes, I expected rather better from Apogee and Sennheiser. You might consider a set of our binaural microphones. We've been making them since 1990. We're the largest manufacturer of binaural mics in the world. We offer them three price levels, ranging in price from $75 per matched pair to a bit over $1000 (using a matched pair of DPA 4060-series capsules). They're the Low Cost Binaural, Core Sound Binaurals (for around $260 per matched pair) and High End Binaurals. They all terminate in a standard 1/8-inch (3.5 mm) stereo plug. You'd use any common 2-channel audio recorder to record. See our web site for details, including dozens of user comments on all three price levels. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic Jon -- Subject: Digest Footer ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound WHEN REPLYING EDIT THE SUBJECT LINE ALSO EDIT THE MESSAGE BODY -- End of Sursound Digest, Vol 118, Issue 4 ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
[Sursound] OctoMic and TetraMic B-format Files
At the bottom of this post are links to two B-format files (in ambiX format) that highlight the improvement that OctoMic provides over any 1st-order ambisonic microphone, including our TetraMic. OctoMic is the first 2nd-order ambisonic microphone commercially available at reasonable cost. We introduced it two weeks ago. TetraMic is the world's most accurate and popular 1st-order ambisonic microphone. We introduced it in early 2007. The two recordings are a short excerpt of a relaxed women's chorus rehearsal, recorded in-the-round. Both OctoMic and TetraMic were positioned near the center of a circle of 14 women singers. The two microphones were positioned within a foot of each other. The OctoMic recording was made on a Zoom F8. The TetraMic recording was made on a Zoom F4. Please listen with an ambisonic decoder that accepts 1st-order (four channels) and 2nd-order (9 channels) B-format sound files. If you need recommendations, please message us. To get the full effect during playback, the minimum speaker configuration we recommend is a 6-speaker hexagon ring. What you'll hear is vastly improved location cues, over a much, much larger listener's sweet spot. Each OctoMic and TetraMic is precisely and individually calibrated. Its unique calibration correction file is applied during A- to B-format encoding, using the supplied encoder plug-in. (For TetraMic, the B-format file was encoded with VVAudio's Visual Virtual Microphone v3.5. For OctoMic, the B-format file was encoded with VVOctoEncodeH v1.0.0.) TetraMic file: core-sound.com/temp/TetraMic-TotaPulchraEs-ambiX-excerpt.wav OctoMic file: core-sound.com/temp/OctoMic-TotaPulchraEs-ambiX-O3-excerpt.wav (You can see two photos of the recording session on Core Sound's Facebook page.) Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of OctoMic and TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Core Sound Announces OctoMic - First 2nd-order Ambisonics Microphone
David Pickett wrote: In addition to the Zoom 8-track recorder that is mentioned on your website, I would recommend the similarly priced Roland R-88, which has the significant advantage that the controls are easier to adjust for those of us with large hands! We haven't had any reports from our customers on the Roland R-88, so we didn't include it. We're in the same situation with SonoSax's eight channel recorder setup. The Zoom F8 and Sound Devices MixPre-10T offer modern pre-amp design and the ability to gang the eight trims. We also recommend that levels between channels be matched to within 0.1 dB. Does the R-88 offer those features? The older R-44 did not. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Core Sound Announces OctoMic - First 2nd-orderAmbisonics Microphone
Stefan Schreiber wrote: At first sight I could not tell anything about the difference between an OctaThingy and Octomic capsule mount. Even not at second... Could you give me/us some hint? Eric's OctaThingy is based on a tetragonal trapezohedron. OctoMic is not. It's based on another geometric solid. The angles are different. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20180328/2de8d80b/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Core Sound Announces OctoMic - First 2nd-order Ambisonics Microphone
J?rn Nettingsmeier wrote: Sweet! A resounding "me too" to Stefan's question about the matrix,since you're one channel short :) OctoMic is a 2h1v microphone. The channel that's compensated for in OctoMic's 2nd-order B-format is R. It's *not* missing. And of course, the 1st-order vertical channel is still present. What's that disclaimer about third-party PPAs? I mean, your PPA seems to be an integral part of the mic, given that it produces unbalanced signals. Is there any other magic going on there? It's a very competitive world, so please forgive me if I don't answer you. I wonder if you can get ZOOM to include an octomic firmware in the F8 eventually, as Sennheiser did with their Ambeo mic, that one's mighty handy. Sennheiser uses a single generic encoder for all of their 1st-order microphones. That allows Zoom to easily do the A- to B-format for all Sennheiser microphones. From our perspective, that's not a great idea, because microphones and capsules age - they are different even straight from the factory - and there's currently no way to compensate for aging drift in Sennheiser's product. From the start, we allow for differences between microphones by individually measuring each TetraMic and OctoMic; we provide a unique calibration file for each microphone. Of course, as a Sennheiser microphone ages and drifts, you could send it to us for measurement and calibration. We'd measure it and return it with its calibration file. From then on you'd use the encoders recommended for TetraMic. We recommend re-calibration every three years for 1st-order microphones used for general applications, and every two years for those used for acoustic measurement applications. Can I assume that there is an updated version of TetraProc for the followers of the penguin? Yes. Fons commented on this in the last Sursound Digest. And looking at the shop, I don't see the Rycote lyre listed yet - is it a generic one that can be had from them, or something custom-made and not quite ready yet? It's a common Rycote product: the INV-7. You can use it with either the the standard black 72 Shore lyres or the red 62 Shore lyres. It's available from Rycote retailers. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Core Sound Announces OctoMic - First 2nd-order Ambisonics Microphone
Ralf R Radermacher wrote: They'd better come up with drivers for the products they've already sold, years ago, e.g. core sound drivers for their useless sorround headphones. Core Sound LLC has never, ever sold surround headphones - nor headphones of any kind - so I don't know what you're referring to. Perhaps you're thinking of a "core audio" software driver for another manufacturer's product? Core Sound LLC is not related in any way to "core audio" drivers. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Core Sound Announces OctoMic - First 2nd-orderAmbisonics Microphone
Ambisonic guru Eric Benjamin wrote: I'd like to point out that I am the inventor of the second order microphone array called by Core-Sound the Octomic. I published the design six years ago at the 133rd AES Convention in preprint 8728. Actually, we're not using Eric's OctaThingy capsule mount design. We (Fons and I) came up with OctoMic's geometry independently. It has slightly different angles than Eric's OctoThingy. It's based on a different geometric solid. After we designed OctoMic's capsule mount, I happened across Eric's AES paper, and was pleased that we came up with something that might be as good. There are very few great minds in the ambisonic world - Eric is one of them. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] oktava 1st order mic
Peter wrote: Thank you for your opinion Len. I am tempted to ask 'why' but let me ask instead what are the most difficult things to get right when building a first-order microphone. The incomparable Aaron Heller covered the main points in his response. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] oktava 1st order mic
Gerard Lardner wrote: Fons Adriaensen in Italy calibrated my Oktava. I believe Richard Lee in Australia might still offer a calibration service, though he appears to be less active on the internet these days, and I think Core Sound in the USA also will do it - they used to say it on their website, but I haven't checked lately. We could, but in general we can confidently state that Oktava doesn't understand how to build a first-order ambisonic microphone, and the cost and effort to calibrate it is not worthwhile. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Ultrasonic speaker that emits 3D sound ?
https://www.holosonics.com Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Simple Software to Play a 6-channel WAV File (Windows)?
Jack Reynolds wrote: VLC 3.0 has been available as one of their nightly betas for a while, but I think it has just been release proper The VLC Home Page still shows v2.2.8. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Simple Software to Play a 6-channel WAV File (Windows)?
Alex Drioli wrote: Wouldn t you be able to use VLC? The consensus seems to be that the current release of VLC 2.2.8 can't do it easily, if at all. If you disagree, would you please provide us with clear instructions how to do it? We'd love to know! Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20171224/41c6/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Simple Software to Play a 6-channel WAV File (Windows)?
Back in October, I wrote: I'd appreciate it if someone could recommend a very simple Windows audio player that can play a 6-channel WAV file to a 6-speaker ring. Richard Dobson responded: Perhaps the "simplest" possible player is a command line one? My "paplay" program plays (and loops) multichannel files to a nominated device, and while it does not have interactive facilities it offers full channel mapping and selecting. Plus elementary B-Format decoding. Part of the old mctoolkit, now resident here: http://www.rwdobson.com/mctools.html Thank you, Richard. "paplay" works fine and is as simple to use as could be. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Most Common Speaker Configurations for HOA Monitoring/Listening?
David Pickett wrote: OctoMic is a new one on me. Are any details available of what it does? Here's the press release from the recent AES Exhibition in NYC: www.core-sound.com/OctoMic/Press_Release_AES_2017.pdf OctoMic prototype photos: www.core-sound.com/OctoMic/OctoMicPrototype1.jpg (shown with TetraMic) www.core-sound.com/OctoMic/OctoMicPrototype2.jpg We expect to have first production model photos next week. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
[Sursound] Most Common Speaker Configurations for HOA Monitoring/Listening?
What speaker configurations are most common for monitoring/listening to FOA and HOA sources? We're configuring the speaker decoder for OctoMic, and would appreciate hearing what you'd like to see included as a preset. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20171222/36c32677/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
[Sursound] Individualized HRTFs
Augustine Leudar wrote: great sound design but no cigar on the binaural front - thats really not going to get solved until a quick and convenient way of measuring HRTFs is designed - I have several in case any millionaires out there are interested At the recent AES Exhibition in NYC, IDA was shown: idaaudio.com https://www.youtube.com/watch?v=pxf28tinxZg Individualized HRTFs, using a smartphone, for under $500. Someone I trust had his done, and he says it finally allowed him to disambiguate between front and rear. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Simple Software to Play a 6-channel WAV File
I wrote: I'd appreciate it if someone could recommend a very simple Windows audio player that can play a 6-channel WAV file to a 6-speaker ring. Thanks for all the suggestions. Ideally, we're looking for a very simple player. I've tried Audacity, and while it records multi-tracks, it only plays stereo. I can't get VLC v2.2.5.1 to play to six speakers. It looks like it will play Dolby 5.1 files, but I can't configure it for a 6-speaker ring playing a 6-channel WAV. I''ve also tried Sound Devices' Wave Agent, but it, too, can only play to 2 speakers. It looks like it's a useful tool for splitting multi-channel WAVs into individual files, and combining single channel WAV files into multi-WAV files. I'll try Plogue Bidule next . It's a bit more complicated that we'd like, but if it works, maybe we can work around the complexity. Other recommendations welcomed! Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
[Sursound] Simple Software to Play a 6-channel WAV File (Windows)?
I'd appreciate it if someone could recommend a very simple Windows audio player that can play a 6-channel WAV file to a 6-speaker ring. A DAW will be too complicated for this user and application. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and OctoMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
[Sursound] Virtual Microphone Processors for HOA?
We're introducing OctoMic next week at AES (booth 315). It's a 2nd-order ambisonic microphone. Does anyone else have a virtual microphone processor for 2nd-order (or higher) B-format? Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Sursound Digest, Vol 110, Issue 15
Daniel Courville wrote: Zoom's new firmware update lets you record 360-degree audio using your Zoom F8 MultiTrack Field Recorder and Sennheiser AMBEO VR Microphone. Zoom released the new v4.0 firmware for their F8 recorder today. It features support for first-order ambisonic microphones, including TetraMic. We recommend using the F8's "Ambisonics A" mode. That mode configures the F8 to record TetraMic's four A-format tracks, while also allowing you to monitor in real-time via speakers or headphones. By recording in A-format you'll retain the ability to apply your TetraMic's unique calibration files. Those files make your TetraMic into one of the world's finest ambisonic microphones. But even monitoring without the calibration files, TetraMic is pretty fine. At first listen, the Zoom monitoring function decode seems to be XY using two virtual cardioid microphones. We haven't measured the patterns yet, so we can't tell you what angle they selected between the virtual microphones. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Multiple ambisonic microphone array?
Matthew Barnard writes: Has anyone had any experience of utilising multiple ambisonic microphones in a spaced array for a recording? We've recommended using multiple TetraMics in spaced arrays to our customers many times, and we mention it on our web site. Perhaps the simplest is an ORTF array, decoding two TetraMics physically spaced 17 cm apart, and each decoded to cardioids angled to an included angle between them of 110 degrees. There's no reason this technique can't be used with other spaced array configurations. Then there's the much more complex possibility of using many TetraMics, uniformly distributed around a space, each dynamically tracking sound sources, and interpolating (handing off) between them as sound sources move around in the space. We know this may be possible. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
[Sursound] Sennheiser Ambeo
Back in September, Paul Hodges <pwh-surro...@cassland.org> asked: Any word about calibration? We've heard from Sennheiser representatives on Facebook that they are not calibrating each Ambeo individually, but rather are using a generic calibration for all examples of that microphone. That is much like what TSL Products is doing with their SoundField SPS200. In contrast, each TetraMic comes with its own calibration. Bo-Erik (Bosse) Sandholm has posted the first B-format recordings that compare Ambeo to TetraMic: https://soundcloud.com/user-740566308/ You can also download them from there. I listened to them with a Blumlein decode and six-channel horizontal surround decode using David McGriffy's "VVMic for TetraMic". In my opinion, his two recordings of the Pygme Jazz Band are particularly revealing. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Oktava A-format microphone?
Albert Leusink wrote: I'm very happy with how my Tetramic sounds, but don't particularly care for the whole PPAC situation with all the little wires and connectors as well as the fact that I cannot use any standard sized wind protection... Did you know that we offer an alternative to the PPAc system? Please contact us for details. Did you know that Rycote's Baby Ball Gag works fine with TetraMic, as well as their industry standard modular system. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Small multichannel speakers setup
On Sun, May 15, 2016 at 01:27 PM, Bo-Erik Sandholm wrote: http://www.tonepublications.com/spotlight/world-premier-review-kef-x300a-powered-speakers/ <http://www.tonepublications.com/spotlight/world-premier-review-kef-x300a-powered-speakers/> Good find! Add the X300As to a MOTU 16A and you've got a simple, good sounding, up to 16-channel playback system. Feed the MOTU via USB 2.0, Thunderbolt or Network. Run 1/4" TS from the MOTU to the X300A's 3.5 mm. www.motu.com/products/avb/16a I wonder if the MOTU's USB 2.0 can handle 16 channels? Its Thunderbolt interface probably can, and the Network certainly can. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic <http://www.tonepublications.com/spotlight/world-premier-review-kef-x300a-powered-speakers/> This might be a powered alternative KEF version at lower cost :-) Connectivity is not great USB or 3.5 mm analog connection. Bo-Erik 2016-05-15 18:24 GMT+02:00 len moskowitz <lenmoskow...@optonline.net <mailto:lenmoskow...@optonline.net> >: Probably the finest of the "point-source" speakers available these days is the KEF LS50. It uses a version of their Uni-Q driver. (A much earlier version of this driver was used in the KEF Egg.) Measurements of the LS50 by John Atkinson (Stereophile magazine) show it to be an outstanding design. http://www.stereophile.com/content/kef-ls50-anniversary-model-loudspeaker-measurements#8FdHrXV2vIpIFjE3.97 <http://www.stereophile.com/content/kef-ls50-anniversary-model-loudspeaker-measurements#8FdHrXV2vIpIFjE3.97> http://www.stereophile.com/content/tale-two-speakers#5Q3dlYfxU3cLRUup.97 <http://www.stereophile.com/content/tale-two-speakers#5Q3dlYfxU3cLRUup.97> It is quite small. A pair of them retails in the US for around $1300. Len Moskowitz (mosko...@core-sound.com <mailto:mosko...@core-sound.com> ) Core Sound LLC www.core-sound.com <http://www.core-sound.com> Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu <mailto:Sursound@music.vt.edu> https://mail.music.vt.edu/mailman/listinfo/sursound <https://mail.music.vt.edu/mailman/listinfo/sursound> - unsubscribe here, edit account or options, view archives and so on. -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20160515/ff9db660/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Small multichannel speakers setup
Probably the finest of the "point-source" speakers available these days is the KEF LS50. It uses a version of their Uni-Q driver. (A much earlier version of this driver was used in the KEF Egg.) Measurements of the LS50 by John Atkinson (Stereophile magazine) show it to be an outstanding design. http://www.stereophile.com/content/kef-ls50-anniversary-model-loudspeaker-measurements#8FdHrXV2vIpIFjE3.97 http://www.stereophile.com/content/tale-two-speakers#5Q3dlYfxU3cLRUup.97 It is quite small. A pair of them retails in the US for around $1300. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Multi-channel Audio Interfaces For Ambisonics Playback?
Thanks, Michael. I'm trying to move away from Firewire, as that seems to have died as a computer interface, so the MOTU Traveler is out of consideration. I see that the MOTU 16A has 16 analog outputs, with Thunderbolt and USB2 interfaces: http://motu.com/products/avb/16a Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic - On Wed, May 11, 2016 at 10:24 AM, Michael Chapman wrote: MOTU Traveller (because I had one (got it for recording)) feeding a Behringer 8-ch DtoA (because it was cheap) Gives 18 channels, (The MOTU gives 10 analogue, so you could get 12 by adding -S/PDIF to A converter or -AES/EBU to A converter.) Not a planned system, just what was about ... but it works fo me. Regards, Michael ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
[Sursound] Multi-channel Audio Interfaces For Ambisonics Playback?
What are you using as the audio interface for a playback system having up to 12 speakers? I see that Tascam has their US-20x20. What else is out there that has low noise? Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Anyone know anything about this
John Leonard write: This info came through from a colleague in the USA, although the company appears to based in Poland. http://audioimmersion.pl/ Anyone else been contacted? I saw it at AES and am on their mailing list. It has a rather large diameter. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] OSSIC Kickstarter Campaign Begins
The OSSIC Kickstarter campaign has now raised more than eight times their fundraising goal. They're at over $811,000 with more than 50 days left to go. One video on the Kickstarter page gives some hints how they're deriving HRTF. It implies that they measure the inter-ear distance, plus two measures of ear size for each ear. https://youtu.be/ko-VeQ7Aflg Len Moskowitz Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
[Sursound] OSSIC Kickstarter Campaign Begins
OSSIC (formerly Sonic VR) has designed prototypes of headphones that do automatic HRTF calculation and headtracking. They will support ambisonics (They have a TetraMic system.) They are seeking development and production funding on Kickstarter: https://www.kickstarter.com/projects/248983394/ossic-x-the-first-3d-audio-headphones-calibrated-t They sought to raise $100,000 in 60 days. They've already raised over $340,000 in less than three. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] HRTF optimization by using tones/noise?
Albert Leusink wrote: ... but what other solutions do we currently have to give binaural listeners the best possible outcome apart from getting themselves measured or them going through a whole list of HRTF?s ? These folks may have the right idea: http://www.ossic.com/3d-audio Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Ambisonics microphone availability Los Angeles
francois blaignan wrote: I'm also interested in renting a Soundfield microphone in Los Angeles . Bexel used to have them Radiant Imaging has one TetraMic for rental, and they tell me that they will soon have two. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Audeze tetrahedral microphone
Ronald C.F. Antony wrote: Looks great, although, the capsules look rather large on these images? 100mm diameter (per their web page copy) ?so I wonder how that?s going to influence the sound or what sort of calibration they offer. Anyone got any experience with one of these? IMO, they have some very serious technical challenges to surmount. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Hooke: First Bluetooth Binaural Microphone
Anthony Mattana wrote: ...And our recording quality is just as good if not better. (hear for yourself: https://www.youtube.com/watch?v=Fw8EzI9ygpI ) Sorry to say that I was not impressed with this recording though it's likely adequate for a consumer crowd satisfied with low rate mp3 recordings, lots of background noise, and degraded binaural fidelity due to variability in individual HRTFs. With the Roland CS-10EM, the mic sits outside of the earlobe and doesn't utilize the earlobe thoroughly when reflecting acoustic pressure waves. If your mics are within the pinna, then if you use on-ear headphones for playback, the HRTF will be changed and you'll lose some binaural fidelity. And if you use in-ear monitors for playback, you'll be getting the resonance effect of the ear canal twice. One of the deficiencies of in-ear binaural recordings is that they don't sound great when played back over speakers. In some ways, near-ear binaural recordings hit the sweet spot of playing back reasonably well on on-ear headphones and over speakers. Hooke is a completely different product from 3DSoundlabs. They are utilizing spatialization software to convert stereo (and often times mono) audio to a proprietary format. They also can play back, with headtracking, ambisonic B-format recordings decoded accurately to binaural using large libraries of HRTFs. I wish you and your new product well! Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Hooke: First Bluetooth Binaural Microphone
Anthony Mattana anth...@hookeaudio.com wrote: I apologize if this is not the way to post, but I'm looking for feedback on a product I've recently invented HOOKE (www.hookeaudio.com ) I like your idea of adding bluetooth to the mix. Long ago, in the late-60's or early 70's, when cassette Walkmen were king, Aiwa offered a low-cost combined stereo headphone/near-ear binaural microphone set. These days, Roland offers the CS-10EM (http://www.rolandus.com/products/cs-10em/) which is the same idea, but in-ear and with higher sound quality. Roland probably has the price edge over you. Your main edge over them is bluetooth. (Bluetooth comes with some negatives too - mainly sound quality.) We've been offering very well-matched, compact, clip-on/in-ear binaural microphones since 1989, ranging in price from $75 to around $1000 per pair. I didn't see them mentioned in the video on your web site when you covered the binaural competition. We have some competitors (copy-cat and otherwise), some at low cost, and they weren't mentioned either. Your system lacks head tracking, so the folks at 3D Sound Labs (http://3dsoundlabs.com/en/) have an edge over you in that feature. But they don't have microphones. And while their headtracker uses bluetooth, their playback is wired. I think that's probably a feature in their case, as they offer better sound quality than bluetooth can offer. IMO, if you added the hardware for headtracking and an app that could do the math for playback, you'd have something very nice. Your retail price would probably rise though. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
[Sursound] 3D Sound Labs: 3D Sound One Headphones
http://3dsoundlabs.com/en/welcome-3d-sound-one/ They seem to be close to offering a set of wired headphones with a built-in headtracker that reports its data via Bluetooth. From what I can glean from the web site, they include an application to decode many common audio file formats. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
[Sursound] Jaunt VR Content with Ambisonic Audio (was Re: Oculus Rift Visual Demo + Ambisonic Audio Available?)
Adam Somers (Jaunt VR) wrote: We just released our first piece of VR content with ambisonic audio to the public. It's a live recording on stage at a recent Paul McCartney concert. The audio was captured from the sound board and mixed in b-format. Available for Google Cardboard now, Oculus Rift Mac/PC coming soon. http://www.jauntvr.com/content/ In case you haven't yet downloaded this content, you're missing something special. This is potentially the first volley in a mass-media revolution! Take a smartphone with a 5-inch screen (or larger), add a low cost ($25!) cardboard viewer and a pair of earbuds, and you've got a real VR player. The screen is split into two; when viewed together, the brain perceives a 3D image. The audio is binaural. The smartphone does the headtracking. The app does the VR video and audio manipulation. (Out of curiousity, I would've liked to hear what the Jaunt VR camera's TetraMic had recorded!) Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
[Sursound] Jaunt VR and TetraMic in NY Times
The August 21 2014 edition of the NY Times had an article about Jaunt VR's virtual reality camera. It uses TetraMic for audio. It has a nice photo of the Jaunt camera with TetraMic in its Foam/Furry windscreen, and another of TetraMic at the top of a Jaunt prototype camera. http://bits.blogs.nytimes.com/2014/08/21/next-for-virtual-reality-video-without-the-games For more information about Jaunt VR: http://jauntvr.com In related news: the new Oculus Rift Development Kit 2 was recently released. http://www.oculusvr.com/dk2/ Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Noise reduction on Ambisonic files
David Worrall worr...@avatar.com.au wrote: I have had much better luck with the TetraMic - as long as radio interference can be kept under control. If you're having incidents of RFI with TetraMic, we recommend our latest phantom power adapter (PPA) system: PPAc. With PPAc the unbalanced cable length can be kept to just a few inches, and RFI should be unusual except in extreme circumstances. The original PPA and PPA2 had longer lengths of unbalanced cable; they were RFI-resistant except in high-EMI areas. Please feel free to contact me if you want to discuss this. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
Re: [Sursound] Ambisonic workflow with mac and Nuendo
Emanuele lamacchiaco...@yahoo.it wrote: I would like to know from your experience how to face the post production workflow to treat those recordings. I am using Nuendo 5 and 6 (or Pro Tools if I have to) on a Mac OS 10.7 and mostly interested in getting standard stereo and planar multichannels for film purposes, to start with. TetraMic comes with two VST plugins that work with Nuendo 5. One converts A- to B-format. The other does the decode to speaker feeds. See www.VVaudio.com . Perhaps you can use the second one, after converting to B-format using the utility supplied with your Brahma? Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
[Sursound] TetraMic and Jaunt VR in Time, Gizmodo and Engadget (Virtual Reality Recording System)
Jaunt VR has developed a virtual reality camera. They're using TetraMic for recording audio, decoding with headtracking for playback over headphones and speakers. For video playback they're using the Oculus Rift. http://time.com/49228/jaunt-wants-to-help-hollywood-make-virtual-reality-movies/ http://gizmodo.com/meet-the-crazy-camera-that-could-make-movies-for-the-oc-1557318674 http://www.engadget.com/2014/04/03/jaunt-vr/ Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] I despair, sometimes.
John Leonard wrote: Makes me want to weep. A few very high-profile film, film-sound, animation and video game studios have bought TetraMics, so I think that we're finally on their radar screens. The tools they need are now available and they know it. I think that the Film Sound Design list participants may be behind the curve of what's developing. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
[Sursound] New PPAs and Cabling for TetraMic
Core Sound is pleased to announce two new phantom power adapters - in addition to PPA2 - for use with TetraMic. PPA3 is a short cable that plugs directly into a recorder or mixer - no extra XLR cables are necessary. PPAc (pronounced pea-pack) is a small transmitter/receiver pair, provides power for all four channels and sends TetraMic's audio over a CAT5/CAT6 cable up to 850 feet long. You can learn more about them here: www.core-sound.com/TetraMic/5.php Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Soundfield 450 Mk2
Jon Honeyball j...@jonhoneyball.com wrote: Pity this *still* doesn't have a 1K tone generator at say -20dB, allowing you to properly calibrate the input levels and replay of your recorder, which almost certainly doesn't have ganged controls. The Sounddevices 788T can do this, but others can't. The Tascam DR-680 has ganged controls. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
[Sursound] Motion-Tracked Binaural
These folks seem to be very close to offering a product: http://www.dysonics.com/tech.html That page has a bunch of links to papers related to the concept. They have an affordable ($60), rechargable, headphone-mounted Bluetooth motion sensor for iPhone and a player app for non-DRM protected music files. They're also targeting Android devices. Algazi and Duda are heavyweights. The company appears to be a spin-off of U of California, Davis. The capture array of microphones pictured in their Rondo video seems rudimentary. They're soliciting developers. As of this past Summer they had raised capital via a Kickstarter campaign to fund their FCC compliance testing. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Upcoming Android apps ambisonic related
Hector: What an incredible demonstration video! Isn't that John Leonard's wonderful recording of the Orfeo string quartet doing Beethoven? Third movement. If I recall correctly it was done with a TetraMic and a Metric Halo ULN-8. I can't wait to try your apps! Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Tetramic Question
David Cindric david.cind...@gmail.com wrote: I am wondering if there is some software with wich I could determine sound direction from tetra mic (4-channel) recordings. Have a look at IRIS, from Marshall Day Acoustics Ltd.: http://www.iris.co.nz Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Ambisonic first approach
J?rn Nettingsmeier netti...@stackingdwarves.net wrote: the tetra sounds great, but the connectors are very flimsy. The connectors are all from Switchcraft's Tini-Q (mini-XLR) series, used in many professional products and contexts. In the six years since TetraMic was introduced, we've had exactly one cable returned to us due to connector or cable failure. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Core Sound TetraMic
Jörn wrote: now if somebody made an analog tetramic-to-CAT5 interface like the insta-snake, small box about the size of the handle of an sm58, one end with 6pin mini-xlr and maybe a rubber gasket to hold the tetramic, four balancing transformers/ppas to match the twisted pair, and a nice ethercon at the end, i would order it right now. and with the ethercon, the shield could be properly wired to the connector sleeve, which i'd find more robust than the instasnake magic... There's something like that coming, but I can't give details yet. It's enough to say that it will address the connector concerns. And some other interesting developments are coming too. Michael Chapman wrote: The PP units invert the signal. Can this be avoided (not against inversion, but see next) ? The original PPA inverted. The current PPA does not. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Core Sound Tetramic
Laurent, You can find many user comments about TetraMic on our User Comments web page: http://core-sound.com/TetraMic/11.php Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Making a standalone 8ch player
Are you familiar with the JoeCo Blackbox Player? http://www.joeco.co.uk/main/BBP_models.html Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] DTS Headphone:X
Augustine Leudar augustineleu...@gmail.com wrote: have you ever heard the Realiser by Smyth Research ? Incredible thing that imitates speakers - even using someone elses HRTF it worked amazingly well There's also the Focusrite VRM (Virtual Refernce Monitoring) Box for about US$100. No headtracking though. It works fine. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] KEMAR, Neumann, Zwislocki
Stefan Schreiber st...@mail.telepac.pt wrote: So: Why are we actually not doing some Kunstkopf recordings with mics just outside the ear channels? (I believe nobody does this.) This is how we recommend recording binaurally with our binaural microphones. It works very well, even if you use a real head and not a Kunstkopf. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Unusual Binaural Head
Eric Benjamin eb...@pacbell.net wrote: This seems to me to be a bit like a device created by the folks at CIPIC, at the University of California at Davis: Google what's coming from Dysonics, Ralph Algazi's company . Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] 8+ channel players ?
JoeCo Blackbox Player Up to 64 channels of 24/96. http://www.joeco.co.uk/main/BBP_introduction.html Sweetwater has it for US$3395. Front End Audio has it for US$3295. Or perhaps you could use two Tascam DR-680s recorders. They use SD cards and more than one can be sync'ed. Each one has six Line outputs and a S/PDIF coax output. They sell in the US for under $600. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Low cost mobile ambisonic recording possible ?
Bo-Erik Sandholm bo-erik.sandh...@ericsson.com wrote: I want to lighten my burden when traveling and maybe do a recording. I want to avoid spending much more money on this. Consider using a Tascam DR-680. It's available in the US for under $700 and has good mic pre-amps with digitally set levels. It is very convenient and reliable for recording with TetraMic. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic and PDAudio ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
[Sursound] Why Ambisonics Didn't Become A Standard, OT: Spatial Music; Low Cost Speakers
I've been following the dissertation thread. (We are one of the two companies that build first-order Ambisonic microphones.) First-order Ambisonics has/had lots of positives: 1. Needs only four source tracks for an essentially unlimited number of playback formats 2. A set of good tools for studio and field recording was/is available 3. It offered/offers fine surround sound presentation, especially realistic rendering of ambience, for many recordings. That makes a real difference for live recordings (e.g., club performances), but not studio recordings. 4. If offered/offers good enough surround sound presentation for more complex spatial recordings 5. It encodes height at no cost. Whether you use the height information is up to you. And a few negatives: 1. No one could/can figure out a way to build a very profitable company around its intellectual property. A profitable company is necessary to promote/champion the idea. 2. Other companies had very powerful profit-related motives to oppose it (e.g., Dolby). 3. Higher order Ambisonics, with its need for more source tracks, is needed to meet the full surround sound agenda of large sweet spot and detailed spatial location 4. Better is the enemy of good enough -- we Ambisonic boosters tend to shoot ourselves in the foot, completely dismissing first-order in favor of higher-order. 5. People understand one source track per playback speaker much more easily than a decoding process. 6. Open systems are really difficult to standardize. Witness the popularity of seriously unwieldy Linux-based Ambisonic solutions here in this newsgroup. And on the OT: Spatial Music thread: Ronald Antony talked about the cost of good speakers being a barrier: ... and anything halfway acceptable is on a good sale at least $250/speaker. This has changed in the last ten years. Good speakers today are acceptably inexpensive: around $75 to $175 per speaker channel. Have a look at: Pioneer SP-BS41-LR ($149.99/pair) - http://www.stereophile.com/content/pioneer-sp-bs41-lr-loudspeaker Wharfedale Diamond 10.1 ($350/pair) - http://www.stereophile.com/content/wharfedale-diamond-101-loudspeaker NHT SuperZero 2.0 ($198/pair) - http://www.stereophile.com/content/entry-level-10 Boston Acoustics A 25 ($299.98/pair) - http://www.stereophile.com/content/boston-acoustics-25-loudspeaker PSB Alpha B1 ($279/pair) - http://www.stereophile.com/standloudspeakers/507psb/index.html Infinity Primus P162 (or older P150 and P160, or newer P153 and P163) loudspeaker ($298/pair) - http://www.stereophile.com/standloudspeakers/1007inf/index.html All of them have been reviewed on Stereophile's web site. Most of the reviews include a nice set of measurements. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Why Ambisonics Didn't Become A Standard, OT: Spatial Music; Low Cost Speakers
I should add one more thing: In my opinion TetraMic is probably the finest Blumlein array available today. That means that for stereo decodes, if you like how Blumlein sounds (and I do), FOA is at the top of the heap. It's interesting that Ambisonics - a technology that most people think of in the context of Surround Sound - can be used to record superlative stereo. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Soundfield-type mics: inverting or not?
Daniel Courville wrote: I think we should try to establish some sort of official database of what SoundField (and TetraMic) models are polarity inverting at the B-Format output. Using the original cylindrical PPA, TetraMic's A-format outputs were inverting. Using the current PPA2, its A-format outputs are non-inverting. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Ambisonics meeting in San Francisco
Martin posted: Sound Research Meetup: Ambisonics Date: Wednesday, September 21st Times: 7pm ? 8:30pm Cost: $5 ? $20 suggested donation (no one turned away for lack of funds) Location: GAFFTA, 998 Market Street, San Francisco, CA 94102 Would someone record this, please? Len Moskowitz (mosko...@core-sound.com) Core Sound LLC Home of TetraMic ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Binaural Microphone options
Chris Pike chris.p...@bbc.co.uk wrote: There are various options around for binaural recording. When considering recordings on real heads (for individualised HRTF sets) what microphones do you recommend? Clearly there going to be a large range in price and quality. BK 4101 for example may be out of my price range. If your budget is adequate, we'd recommend our High End Binaural (HEB) microphone set. They use a well-matched pair of the DPA 4060-series capsules. The BK 4101 uses the same capsules. The HEBs have a considerably lower price. On a related note what is the best approach for blockage of the ear canal when making these recordings with in-ear microphones? Any references would be appreciated. If you want to do in-ear binaural recordings, we recommend bringing the HEBs to your local hearing aid technician and having them make a custom set of silicone ear molds. In the US that costs around $100. They can also be mounted near-ear by using clip mounts attached to the earpieces of a set of eyeglasses. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
[Sursound] HARPEX-B Plus First Order Mic vs. Third Order
I've been playing with Svein's player. It looks and sounds good. One claim he's making is that his parametric decoding method allows a first-order soundfield microphone (like our TetraMic) to provide direction cues that are equal to or better that what's available from a third-order soundfield microphone. Also, presumably the sweet spot is comparable in size to the one we'd expect from a third-order microphone. If you've been using the HARPEX-B player or plug-in, do you think the claims are reasonable? Len Moskowitz (mosko...@core-sound.com) ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
[Sursound] HRTF Database
Perhaps folks here will find this useful: http://interface.cipic.ucdavis.edu/sound/hrtf.html CIPIC HRTF Database The CIPIC HRTF Database is a public-domain database of high-spatial-resolution HRTF measurements for 45 different subjects, including the KEMAR mannequin with both small and large pinnae. The database includes 2,500 measurements of head-related impulse responses for each subject. These standard measurements were recorded at 25 different interaural-polar azimuths and 50 different interaural-polar elevations. Additional special measurements of the KEMAR manikin were made for the frontal and horizontal planes. In addition, the database includes anthropometric measurements for use in HRTF scaling studies, technical documentation, and a utility program for displaying and inspecting the data. Accessing the data requires MATLAB 5x or greater. Additional details are given in the following paper: V. R. Algazi, R. O. Duda, D. M. Thompson and C. Avendano, The CIPIC HRTF Database, Proc. 2001 IEEE Workshop on Applications of Signal Processing to Audio and Electroacoustics, pp. 99-102, Mohonk Mountain House, New Paltz, NY, Oct. 21-24, 2001. Len Moskowitz (mosko...@core-sound.com) ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] cross-talk cancellation used in binaural sound
Ralph Glasgal wrote: It is virtually impossible to get?360 degrees (including height) via earphones. Add head tracking and it's possible. Some folks have been doing that well for quite some time. Len Moskowitz (mosko...@core-sound.com) ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
