Re: [PD] smartphone advice
Hi Hans, I'm curious about the iPhone port: What's the main broad goal of this effort? (I mean other than the obvious of having Pd working on iPhone, which will be great!). Is the plan to have Pd for iPhone as an open-source app for the community? - i.e. for jailbroken itouch things? Will the audio i/o code be open source (is that even possible with Apple), and if so, which license? Or is this a private experiment? Can you elaborate, or did I miss something on the list? cheers Nick On Nov 4, 2009, at 4:46 AM, Hans-Christoph Steiner wrote: Yes of course. RIght now you can do everything in a Pd patch in both Android and iPhoneOS except input/output audio or MIDI. So netsend/netreceive work, for example. You could build a streaming externals to stream audio in/out. We'll get the audio stuff ironed out soon, there is some code in the works. .hc On Nov 3, 2009, at 8:53 PM, João Pais wrote: how about control? I was hoping of in the future perform in the middle of the room with a htc magic (or something) controlling my patch on the laptop in the stage. is osc already available in all these platforms? Everything works but audio input and output, but that's in the works. Externals work too, if you use a jailbroken device, you don't need to heed Apple's lame restrictions. .hc On Nov 3, 2009, at 4:39 AM, Si Mills wrote: SO this is certainly interesting When you say Pd builds for Android and iphone, but no audio, what does that mean? THe pd gui works? I have a feeling, in the end, i might play devils advocate and go with the android phone. On 29 Oct 2009, at 18:17, Hans-Christoph Steiner wrote: THere are a number of developments in this regard: - Pd (pd-gui-rewrite 0.43 branch) now builds directly for Android and Apple iPhoneOS. Maemo should be pretty easy too. No audio yet, but that's in the works. - Pd has been available in the Debian-armel branch for a while, that means lots of devices if you are willing to install your own OS. You can install Debian in parallel with Android. - you can build PDa to run on a wide range of free distros, like Maemo, Familiar, Angstrom, OpenMoko, reware for ipods, Palms, etc. rjdj runs well on iPhoneOS, so that means Pd can be made to work well there. Android will take a fair amount of work to get up to the same level, but in the long run will probably be easier since the platform is a lot more open. .hc On Oct 29, 2009, at 1:34 PM, marius schebella wrote: same problem here, not sure what to get. another device that might be worth checking out is the nokia n900, which is/was scheduled for release some time this year. it runs maemo (nokia's linux version) and - at least on former versions of maemo - it was possible to get pd-anywhere running. But I have not seen/tested it, so I cannot promise anything. for now: I am not sure about the palm, the android g1, g2 both do not run pd (yet...) and I think windows mobile neither, leaves the iphone. marius. 2009/10/29 Chris McCormick ch...@mccormick.cx: On Thu, Oct 29, 2009 at 03:33:24PM +, Si Mills wrote: to Android as a platform, even though there is bog all for it at the moment, but I feel there is going to be a massive explosion on that front soon, I also feel that, and I can see some people lighting the TNT. Chris. --- http://mccormick.cx ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list Using ReBirth is like trying to play an 808 with a long stick.-David Zicarelli ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list I have always wished for my computer to be as easy to use as my telephone; my wish has come true because I can no longer figure out how to use my telephone. --Bjarne Stroustrup (creator of C++) ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list -- Friedenstr. 58 10249 Berlin (Deutschland) Tel +49 30 42020091 | Mob +49 162 6843570 Studio +49 30 69509190 jmmmp...@googlemail.com | skype: jmmmpjmmmp News is what people want to keep hidden and everything else is publicity. - Bill Moyers ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -
Re: [PD] latency issue
SNAP. Maybe try using Jack? (if you're not already) It should save you a little CPU overhead, which might allow lower latency. Nick On Oct 16, 2009, at 7:22 AM, babsyco babsyco wrote: Hi guys-I just have another fairly simple question. I'm running PD on a macbook pro with a 2.26 Intel Core 2 duo processor, 2 gig of memory 1067 MHz DDR3, and I'm using a terratec Phase 24FW external sound card. On my other computer (which was far inferior) using this soundcard with Cubase I had a latency of around 6ms (I couldn't get PD to run on it so I have no basis for comparison there), but running PD on this new setup I can't get the latency down below 20ms with it turning to mush. What do I need to change to get the latency down below 10ms-the soundcard, more ram, or is the processor just too slow? Thanks so much. Babsyco. Let us find your next place for you! Need a place to rent, buy or share? ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] purepd atan2~ without expr/externals?
There are two approximations here: http://www.dspguru.com/comp.dsp/tricks/alg/fxdatan2.htm a rough implementation is attached. I haven't listened to these yet though, so not sure how they sound. Nick Hi, I'd like to use a signal [atan2~] in a Pd without externals nor [expr~] (i.e. inn RjDj). Does anyone have a purepd implementation of it or maybe a pointer to some math/trigonometric identity/ln-substituion formula for atan2? Ciao -- Frank BarknechtDo You RjDj.me? _ __footils.org__ ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list test_atan2-v2.pd Description: Binary data ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Stereo simulation of multichannel audio [ot?]
Hi Joao, It sounds like you need a stereo auralization of various multichannel diffusion pieces. One option is to make a binaural down-mix of the multichannel material, although that has the restriction of only sounding good on headphones. This would still leave a decision on where to place sound sources, and how to do the auralization (i.e. how to do the room simulation, etc). For stereo speaker playback, there is not really a canonical solution. Again though, you could do an auralization of the intended diffusion to an intermediate format like ambisonics, then do a stereo decode. This will not leave as much of a spatial impression as a binaural mix, but it will be more portable to different listening setups. Either way there are still various (essentially aesthetic/artistic) decisions to make about the specification of the auralization. So you might find that the best results for generalised playback (headphone or speakers), is just to make aesthetic decisions and do a multichannel downmix. At any rate, if you want to explore ambisonic and/or binaural down- mixes, the IEM tools for doing this are all in Pd extended. For more info on the binaural stuff, you can try the patches and publications here: http://iem.at/Members/noisternig/bin_ambi The patches are windows only, but they can be reconstituted from the IEM objects available for other platforms inside Pd Extended (or SVN). cheers Nick Nicholas Mariette Researcher Audio and Acoustics group LIMSI-CNRS, Orsay, France http://www.limsi.fr/Scientifique/aa/ http://www.limsi.fr/Scientifique/ps/thmsonesp/SonEspace http://soundsorange.net nicholas.marie...@limsi.fr On Jul 20, 2009, at 3:30 PM, João Pais wrote: Hi, my laptop trio Endphase (http://www.endphase.net/) is going to work out our archived recordings, so that we get decent stereo versions to spread around. Since many of them are multichannel (from 4 to 8) in different setups (not necessarily only 2d around the audience), we'll be searching for efficient ways to try to convert the original audio to stereo. That is, having a good as possible compromise between both situations, knowing that a 100% simulation is impossible. This is a field that I don't know that well, and we're still in the beginning of the work. Does anyone has any suggestions to which approaches are best? Ambisonics, phase inversion, hrtf, home medicine? Are any of these also available through Pd? (it would be nice to mix/spacialize the materials in Pd) Thanks, João Pais -- Friedenstr. 58 10249 Berlin (Deutschland) Tel +49 30 42020091 | Mob +49 162 6843570 jmmmp...@googlemail.com | skype: jmmmpjmmmp ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Stereo simulation of multichannel audio [ot?]
On Jul 20, 2009, at 4:07 PM, João Pais wrote: It sounds like you need a stereo auralization of various multichannel diffusion pieces. if that's the official name for it, yes, right. Not sure about being official but Auralization is at least a term used in academic discussion and acoustics consultation for some years (maybe 15-20 years at least now?), meaning the scientific simulation of sound sources in real space with real acoustics. e.g. see: http://auralization.tkk.fi/EAAsymposium09 where you can find some publications, also some software and other stuff. ... that said, in audio engineering, it'd be a down-mix that you're after - and that can be done however you feel like it! cheers Nick Either way there are still various (essentially aesthetic/artistic) decisions to make about the specification of the auralization. So you might find that the best results for generalised playback (headphone or speakers), is just to make aesthetic decisions and do a multichannel downmix. At any rate, if you want to explore ambisonic and/or binaural down- mixes, the IEM tools for doing this are all in Pd extended. I should had said before: it would be good if the codings would be suitable for as many playback situations as possible, as they would also be heard in that way (cd, radio, stream, headphones, ...). But if for example the headphone version is particularly good, we might think about doing a version for it. Also some words about the movements, which I didn't say first: there are several types of movements (each performance is different), sometimes circles, sometimes irregular ones, sometimes (very) slow, sometimes fast, ... They're not indispensable to the rest of the musical discourse going on, but they integrate with it [so we think]. So it would be nice to have at least an impression of the space, as it won't be *that* precise. Thanks for your suggestions, I'll look into them later. ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
[PD] help needed: broadcast mode netsend(~) over UDP (from Mac OSX)
hi, Can anyone advise on whether it's possible to do UDP broadcast (e.g. to 255.255.255.255 or more limited IP ranges) from netsend~ (by Olaf Matthes), or even netsend or other network objects? I've tried this and have not had any luck. I get this error: connecting stream socket: Permission denied (13) I then looked at the code of netsend~. I'm using an updated version available (with source) at: http://www.remu.fr/sound-delta/netsend~/ After some googling around about the (13) error, I tried setting SO_BROADCAST, which it seems might be necessary to enable broadcast mode. This didn't help - I still get the permission denied message. I have then tried several other network objects, like netsend (control data version), and have had no luck. If I could get any of these going in broadcast mode, I might be able to modify code to make something work. I've found some Pd list posts about broadcast working, but haven't been able to duplicate these results. e.g. http://markmail.org/thread/6bjcfzblukbynchp I've been working on a simple 192.168.x.x network between 2 computers, with direct message sending working without problems. I think I'm stuck for further ideas to get broadcast working... Can anyone suggest a solution - or even a next move?! cheers Nick ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] help needed: broadcast mode netsend(~) over UDP (from Mac OSX)
Here's a link to that thread about the SO_BROADCAST option... http://markmail.org/message/s5xygbsbke5ly4bp Nick On Jul 15, 2009, at 5:40 PM, Nicholas Mariette wrote: hi, Can anyone advise on whether it's possible to do UDP broadcast (e.g. to 255.255.255.255 or more limited IP ranges) from netsend~ (by Olaf Matthes), or even netsend or other network objects? I've tried this and have not had any luck. I get this error: connecting stream socket: Permission denied (13) I then looked at the code of netsend~. I'm using an updated version available (with source) at: http://www.remu.fr/sound-delta/netsend~/ After some googling around about the (13) error, I tried setting SO_BROADCAST, which it seems might be necessary to enable broadcast mode. This didn't help - I still get the permission denied message. I have then tried several other network objects, like netsend (control data version), and have had no luck. If I could get any of these going in broadcast mode, I might be able to modify code to make something work. I've found some Pd list posts about broadcast working, but haven't been able to duplicate these results. e.g. http://markmail.org/thread/6bjcfzblukbynchp I've been working on a simple 192.168.x.x network between 2 computers, with direct message sending working without problems. I think I'm stuck for further ideas to get broadcast working... Can anyone suggest a solution - or even a next move?! cheers Nick Nicholas Mariette Researcher Audio and Acoustics group LIMSI-CNRS, Orsay, France http://www.limsi.fr/Scientifique/aa/ http://www.limsi.fr/Scientifique/ps/thmsonesp/SonEspace http://soundsorange.net nicholas.marie...@limsi.fr ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Errors building PD from source
hi Ian, I don't know about fixing the build errors, but I have another solution for making a custom Pd bundle that opens on other machines, with desired settings. I outlined my process in an email to the pd list a year ago: http://markmail.org/message/nyhvbqm6vaoiegzk Maybe this approach will work for you? cheers Nick Nicholas Mariette Researcher Audio and Acoustics group LIMSI-CNRS, Orsay, France http://www.limsi.fr/Scientifique/aa/ http://www.limsi.fr/Scientifique/ps/thmsonesp/SonEspace http://soundsorange.net nicholas.marie...@limsi.fr On Jul 2, 2009, at 4:34 AM, Ian Andrews wrote: Hi All, I'm trying to build Pd-0.42-5 on Mac OSX 10.5.5 intel (tk/tcl8.5.7) It compiles ok but when I go to make it gives the following errors: /SDKs/MacOSX10.4u.sdk -arch i386 -arch ppc -Wno-error - O2 -o ../bin/pd-watchdog s_watchdog.c ld: library not found for -lcrt1.10.5.o ld: library not found for -lcrt1.10.5.o collect2: ld returned 1 exit status collect2: ld returned 1 exit status lipo: can't open input file: /var/folders/JJ/JJlSAMjyENGNhM-Li9ZWvE++ +TI/-Tmp-//ccl7yaI2.out (No such file or directory) make: *** [../bin/pd-watchdog] Error 1 As far as I can see from the man file ld searches first in /usr/lib. In /usr/lib there is a file called crt1.10.5.o Anyone know what's going on? I have also tried compiling Pd-0.41.4-extended but contrary to the install instructions there is no configure file in the src directory , just configure.in. Not quite sure how to proceed here. Before anyone says 'why not use the binary' I'm building from source because I want to be able to start up PD from a shell script with various flags. IOW I need PD to start up and load a patch, set the correct output device, etc. automatically and reliably. Its for a gallery installation. Any suggestion of alternative strategies would be welcome. I'm fairly new to pd but I have been building from source on Macosx and linux for a few years. Usually I can work it out. This time I'm really stuck. ian ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] compiling netsend~ in osx 10.5
Try the updated netsend~ code here: http://www.remu.fr/sound-delta/netsend~/ This should build on Mac PPC or Intel. Nicholas Mariette Researcher Audio and Acoustics group LIMSI-CNRS, Orsay, France http://www.limsi.fr/Scientifique/aa/ http://www.limsi.fr/Scientifique/ps/thmsonesp/SonEspace http://soundsorange.net nicholas.marie...@limsi.fr On May 20, 2009, at 8:38 PM, Hans-Christoph Steiner wrote: That float_cast.h was the key bit of info. It turns out that it was defining a version of lrint() using PowerPC assembler, that's why the i386 builds barfed on it. I just defined a macro in the makefile so that it uses the built-in lrint() and it builds. While I was at it, I checked in a bit to make it build universal by default. So try this: cd trunk/externals/olafmatt/netsend~ svn up make clean pd_darwin You should end up with two universal binaries. There isn't any help patches, so if you get things working, please submit help patches to the patch tracker and I'll check them in. You could also post the binaries somewhere. .hc On May 20, 2009, at 1:09 PM, Scott McCoid wrote: Hello, I've been a long time lurker here on the mailing list and I may have some sort of a solution. I wanted to use netsend~ a while ago and had the same problem compiling it. I somehow found a solution in the pd mailing list archives but I've having trouble finding it again. Nonetheless, I do remember it involved modifying the float_cast.h file if I'm not mistaken. This ended up working, and the objects work with the test-netsend~.pd patch that comes with the files. However, a friend of mine and I were having trouble actually sending audio to each other (we were able to connect to each other). I'm not sure if this is proper mailing list etiquette but I've uploaded netsend~.pd_darwin, netreceive~.pd_darwin, and the changed float_cast.h file to my website. Hopefully this works for people. http://sdcc15.ucsd.edu/~smccoid/files/pd/ Oh, and I did compile this on a leopard/intel mac. - Scott On May 20, 2009, at 9:35 AM, Hans-Christoph Steiner wrote: no luck there, I am on 10.5.7. What's needed is an xcode update. If you installed xcode 3.0 and then upgraded, sometimes you can fix things by uninstalling the whole xcode thing, then reinstalling 3.1 directly. .hc On May 19, 2009, at 11:45 PM, Mario Mora wrote: Andres There is an update for leopard (10.5.6 -- 10.5.7) maybe that can fix the thing... 2009/5/19 Jose Luis Santorcuato santorcuat...@gmail.com Leopard... is like a windows vista... hehehe... i have problems with blender... live ableton... the graphics... i am trying conect net send and net receive... this week i think the patch be ok. Cheers from Chile José http://www.chilemigra.cl http://arselectronicachile.blogspot.com/ www.myspace.com/santorcuato 2009/5/19 Hans-Christoph Steiner h...@at.or.at It seems to be an Mac OS X/Intel 10.5 issue, I get the same: h...@palatschinken:netsend~ make pd_darwin cc -DPD -DUNIX -DMACOSX -O2 -Wall -W -Wno-unused -Wno-parentheses -Wno-switch -I../../../pd/src -o netsend~.o -c netsend~.c /var/folders/Yj/YjGPy6WhGTC8aZMfjwpxvTI/-Tmp-//ccp9MAda.s: 614:no such instruction: `fctiw %st,%st' /var/folders/Yj/YjGPy6WhGTC8aZMfjwpxvTI/-Tmp-//ccp9MAda.s: 615:no such instruction: `stfd %st, -32(%ebp)' make: *** [netsend~.pd_darwin] Error 1 Perhaps its worth reporting to Apple, that's probably a bug in their compiler. .hc On May 19, 2009, at 2:36 PM, Andres Ferrari wrote: hello Hans, the objects was compiled in OSX 10.5.5 with terminal (xcode installed in the system) Do you have the objects compiled for leopard? Message: 7 Date: Mon, 18 May 2009 15:31:10 -0700 (PDT) From: Andres Ferrari an...@yahoo.com Subject: [PD] compiling netsend~ in osx 10.5 To: pd-list@iem.at Message-ID: 324298.20353...@web111404.mail.gq1.yahoo.com Content-Type: text/plain; charset=iso-8859-1 hello, I got netsend~ and netreceive~ sources from this website: http://www.nullmedium.de/dev/netsend~/ when I compile them netreceive~..pd_darwin is created without problem, but netsend~.pd_darwin don`t appear and the terminal show: ferraris-macbook41:net ferrari$ make pd_darwin cc -DPD -DUNIX -DMACOSX -O2 -Wall -W -Wshadow -Wno-unused -Wno-parentheses -Wno-switch -I../../src -Iinclude -o netsend~.o -c netsend~.c /var/folders/Pv/PvVeb-QFGxi7XEJGJnt4kk+++TI/-Tmp-//ccWJWAbj.s: 614:no such instruction: `fctiw %st,%st' /var/folders/Pv/PvVeb-QFGxi7XEJGJnt4kk+++TI/-Tmp-//ccWJWAbj.s: 615:no such instruction: `stfd %st, -32(%ebp)' make: *** [netsend~.pd_darwin] Error 1 any idea?? thanks!!! Andr?s Ferrari G. http://www.myspace.com/anfex ?Obt?n la mejor experiencia en la web! Descarga gratis el nuevo Internet Explorer 8. http://downloads.yahoo.com/ieak8/?l=e1 -- Message: 8 Date: Mon, 18
Re: [PD] packOSC BLOB
Yes, try netsend~ and netreceive~, by Olaf Matthes. There's a recent update (with some fixes) available at: http://www.remu.fr/sound-delta/netsend~/?page_id=7 older version: http://www.nullmedium.de/dev/netsend~/ or in svn: http://pure-data.svn.sourceforge.net/viewvc/pure-data/trunk/externals/olafmatt/netsend ~/ - It doesn't seem to be in Pd-extended though... Nicholas Mariette Researcher Audio and Acoustics group LIMSI-CNRS, Orsay, France http://www.limsi.fr/Scientifique/aa/ http://www.limsi.fr/Scientifique/ps/thmsonesp/SonEspace http://soundsorange.net nicholas.marie...@limsi.fr On May 11, 2009, at 5:00 PM, Martin Peach wrote: IOhannes m zmoelnig wrote: Martin Peach wrote: Wolfgang Jäger wrote: Hello, For sending audio efficiently over OSC I would need an OSC-BLOB. Unfortunately the packOSC object supports no OSC-BLOBs. Is there any possibility to send BLOBs? since blob is an arbitrary type, you have to interpret/generate this list of bytes somehow in your patch. if you are working that low-level, i guess you can also de/ construct OSC-packages on your own. ciao I can probably add a Blob type to [packOSC] and [unpackOSC]. The thing is that the blob type is supposed to consist of arbitrary bytes (8-bits), but Pd audio works with 32-bit floats. There is nothing [unpackOSC] can do with a received blob except output the list of bytes, so some other object would be needed to pack groups of 4 bytes into floats again. It may end up being just as efficient to send a bunch of floats for each signal vector. iirc, for the very project the decoding is done outside of Pd anyhow (on specialized hardware), so the problem of [unpackOSC] not knowing what to do with a blob is a minor issue here. (and the use of specialized hardware is the reason why data (low-resolution fixed-point numbers) should actually be packed in a blob rather than floating-point). i still think (see above) that even [packOSC] cannot provide a consistent interface to pack blobs into an osc message that is sufficiently more simple to use than manually constructing OSC messages. It might be interesting to have a [netsend~] and [netreceive~] pair that send/receive raw Pd sound vectors like [send~] -- no OSC or fancy formatting, just UDP packets with floats, except that the first element of the list would probably have to be the number of floats in the vector unless it's fixed for all time. [osc~ 330] | [netsend~ 127.0.0.1 9998] [netreceive~ 9998] | [dac~] Martin ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] self-modifying and dynamic patching
I have an old patch called nm-grainer that used an earlier version of nqpoly to do granular synthesis using a self modifying patch to do variable polyphony. http://soundsorange.net/cmsimple/index.php?projects:nm-grainer_granular_synthesis_patch_for_Pd http://puredata.info/Members/nmariette/nm-grainer-description/?searchterm=nm-grainer Nick On Mar 11, 2009, at 6:55 PM, Derek Holzer wrote: Would like to show some examples of dynamic and self-modifying Pd patches during a workshop here in Berlin. I know there are some in the archives (and maybe on people's HDs) somewhere, but damned if I can find them. Links to previkous posts or new examples welcome! best! Derek -- ::: derek holzer ::: http://blog.myspace.com/macumbista ::: http://www.vimeo.com/macumbista ::: ---Oblique Strategy # 163: Turn it upside down ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] phase-canceling
On Feb 25, 2009, at 1:00 AM, mrz wrote: yes,i find it also not an absurd question. I had build a loop machine, and i did want to phase cancel the sound is coming out of the speakers to be able recording and play again new stuff over that loop in realtime (overdubbing). But as far as i understand it is a really complex thing to do so as chuck allready mentioned. But someone build allready a kind of feedback canceller or is it simply not possible in the real world? Like, it's the best way simply EQ'ing your Soundsystem to have the best result? Best to do as bands do for singers or any other instrument when feedback is not desired... use a cardioid microphone with low sensitivity, and make the desired input signal much closer to the microphone than the speakers. If possible, don't face the speakers into the microphone at all. Even to achieve *some* feedback cancellation is very difficult, and true cancellation is impossible (except maybe theoretically for a totally known electro-acoustical system, with same number of emitters and receivers). Feedback avoidance is slightly more possible (e.g. by small frequency shifts). At best, feedback suppression by narrow band filtering can only get you a few extra db of gain before feedback pops up somewhere else. Nick all the best, moritz On Mon, Feb 23, 2009 at 7:19 PM, Charles Henry czhe...@gmail.com wrote: Hi, yohannes No, it's not absurd. Tell us a little bit more about your application. I am out of the project game for now, but have some long term goals for solving this sort of problem. For example, you send a sound out your speakers. You want to recieve a new sound from the room on microphone that is not the sound coming from the speakers. This becomes a system identification problem. You need to find the delay between the speakers and microphone and the transfer function (a filter) between speakers and mic. Then, you digitally apply the filter and delay to your signals as they would be played and subtract that copy from the signal received by the mic. Chuck On Mon, Feb 23, 2009 at 4:02 PM, yohannes this_is_...@web.de wrote: hello everybody, maybe sounds absurd: is it possible to cancel an whole signal of an mic input through phase-canceling? if yes, how can i do dat in pd? thanks a lot, yohannes ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list -- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . http://www.myspace.com/moritzwettstein . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Phone application
Have a look at RjDj - which is essentially Pd for iPhone. The coming beta release allows downloading new Pd patches (scenes) onto an iPhone. http://www.rjdj.me/ or there's the Reware project: http://dev.eyebeam.org/projects/reware/blog from a Pd list mail from Hans-Christoph Steiner: I don't know if you have been following the Reware project, but that is a core idea of it. Check out our first HOWTO for an intro: http://www.youtube.com/watch?v=tMnIh2lWB6M Nick On Feb 12, 2009, at 12:58 PM, josue moreno wrote: Hi there, is there a way to create a pd patch and make it works in a phone? It doesnt have to be a playable patch, just a generative patch which starts when open that can be used in any regular telephone. I found pd2j2me but that project is not maintained since 2005 and I guess there must be something newer. The idea is to give it as a present to friends, so it doesnt have to be difficult to install in a phone, like a Nokia N73 for instance Thank you, Josué Actualízate, descubre el nuevo Windows Live Messenger. ¡Descárgatelo ya! ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list Nicholas Mariette Researcher Audio and Acoustics group LIMSI-CNRS, Orsay, France http://www.limsi.fr/Scientifique/aa/ http://www.limsi.fr/Scientifique/ps/thmsonesp/SonEspace http://soundsorange.net nicholas.marie...@limsi.fr ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] doco on iem_bin_ambi?
You can find the names of the available objects in the iem_bin_ambi library by looking in the extras folder in terminal like this (or open the package and browse in finder): $ ls /Applications/Pd-extended-0.40.3.app/Contents/Resources/extra/ iem_bin_ambi/ bin_ambi_calc_HRTF.pd_darwinbin_ambi_reduced_decode_fft.pd_darwin bin_ambi_reduced_decode_fir2.pd_darwin bin_ambi_reduced_decode.pd_darwin bin_ambi_reduced_decode_fft2.pd_darwin iem_bin_ambi-meta.pd bin_ambi_reduced_decode2.pd_darwin bin_ambi_reduced_decode_fir.pd_darwin However, these objects are fairly low level and interdependent. There appears to be some Pd console information from the objects, but for the best available example of how to use them, download and load the main patch from the windows package: http://iem.at/Members/noisternig/bin_ambi Then make sure you add all the necessary paths for all the abstractions in sub-folders, and other objects - e.g. iemmatrix etc. I think you should be able to make the example environment work this way. Nick - http://www.limsi.fr/Scientifique/ps/thmsonesp/SonEspace http://soundsorange.net On Jan 21, 2009, at 11:18 PM, e deleflie wrote: thanks Nick, I know I have the code installed on OSX because I can instantiate [import iem_bin_ambi] but that doesn't tell me what the available objects are. So I guesss by trying to create [iem_bin_ambi] and [bin_ambi] (no idea if they are the right objects) ...and I get an error in the console: ... libdir_loader: added 'iem_bin_ambi' to the canvas-local objectclass path libdir_loader: added 'iem_bin_ambi' to the canvas-local objectclass path libdir_loader: added 'iem_bin_ambi' to the canvas-local objectclass path error: maximum object loading depth 1000 reached iem_bin_ambi ... couldn't create All I need is the name of the blasted objects! Etienne On Thu, Jan 22, 2009 at 3:35 AM, Nicholas Mariette nmari...@limsi.fr wrote: Documentation of iem_bin_ambi is mostly limited to the patches (and some papers) as far as I'm aware. There is a package for iem_bin_ambi here (windows): http://iem.at/Members/noisternig/bin_ambi For OSX, I believe all the necessary objects are built and included in Pd extended, under Pd-extended.app/Contents/Resources/extra/iem* (right click the app and Show Package Contents) I think you should just need to add the correct paths into Pd preferences to make the patches from the windows bin_ambi package work. Nick - http://www.limsi.fr/Scientifique/ps/thmsonesp/SonEspace http://soundsorange.net Can anyone point me to any doco on iem_bin_ambi? ... (and iem_ambi for that matter). Google is failling me ... maybe somewhere on my harddrive? I'm on OSX (in case that has significance) Etienne ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] doco on iem_bin_ambi?
Documentation of iem_bin_ambi is mostly limited to the patches (and some papers) as far as I'm aware. There is a package for iem_bin_ambi here (windows): http://iem.at/Members/noisternig/bin_ambi For OSX, I believe all the necessary objects are built and included in Pd extended, under Pd-extended.app/Contents/Resources/extra/iem* (right click the app and Show Package Contents) I think you should just need to add the correct paths into Pd preferences to make the patches from the windows bin_ambi package work. Nick - http://www.limsi.fr/Scientifique/ps/thmsonesp/SonEspace http://soundsorange.net Can anyone point me to any doco on iem_bin_ambi? ... (and iem_ambi for that matter). Google is failling me ... maybe somewhere on my harddrive? I'm on OSX (in case that has significance) Etienne ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Pd-extended and command line parameters
Have a look at this list email: http://lists.puredata.info/pipermail/pd-list/2008-10/065706.html and a follow-up: http://lists.puredata.info/pipermail/pd-list/2008-10/065709.html - for ways of getting around the lack of command-line, and loading libraries - in particular, a method for customising separate Pd instances for different purposes. I use this method successfully for working on customised versions of the IEM bin_ambi tool, also RjDj, alongside Pd-extended and vanilla, all on the same computer. Nick - http://www.limsi.fr/Scientifique/ps/thmsonesp/SonEspace http://soundsorange.net All, I cant get the command line parameters to work on Pd-extended. (OSX) Using the GUI 'startup' option doesn't work for me because I'm using 2 instances of PD spread over a 2 core machine . talking to each other via jackdmp. I need to access the command line parameters so that I can configure the instances differently. Is there a secret to get command line params to work with Pd-extended? Etienne ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] PD Float accuracy
I've had the 6-digit problem trying to print UTM position coordinates out of Pd. If you know the range of your numbers, there are some ugly hacks that provide a limited solution. Eg, for 1234.5678 you can pass the number through [int] and then subtract that from the original number to get the parts before and after the decimal, then print them separately and use external scripts to concatenate - or maybe you could convert them to symbols and concatenate in Pd before printing. You could do similar things using [mod] for numbers above 1e+06, etc... Nick On Nov 7, 2008, at 10:08 AM, Roman Haefeli wrote: On Fri, 2008-11-07 at 09:45 +0100, IOhannes m zmoelnig wrote: Mark Sexton wrote: Hi I need PD to make simple but accurate calculations for a sonification project. However there seems to be a problem working accurately with floats that have 7 or more digits in total (before or after the decimal point). PD always seem to round the figure to 6 digits whether in a calculation, or even typing a 7+ digit float into a number box e.g. 1234.5678 rounded to 1234.57 I've got a couple of ugly hacks to work around for now, but it seems a fairly fundamental thing to do, so would be grateful to hear if I'm missing a simple way to get PD to work accurately with floats of any arbitrary length above 6 digits. you don't need anything. Pd does uses IEEE floating point values for numbers, you don't loose a single bit. it's only the GUI that likes to round the numbers when displaying it. internally everything is correct (as far as it is possible using single precision floats) you could change the width of a number-box to see more digits. still only 6 digits are displayed. altough pd works internall with IEEE 32bit floating values, i couldn't think of an easy way to get them out of pd. both, print and the numberbox truncate the numbers. two ways - not very feasible, though - to get full precision out of pd come to my mind: - send the numbers over OSC to some other application - write the numbers to an audio file with 32bit bitlength. extract the numbers from there or has someone a better idea? roman ___ Der frühe Vogel fängt den Wurm. Hier gelangen Sie zum neuen Yahoo! Mail: http://mail.yahoo.de ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Script in osx
I find that the Pd command line functionality is broken in many
versions of Pd for OSX. (at least i can't get it to work)
The latest Pd extended (0.40.3) DOES seem to work for the command line
though, which is good news.
However, once you save preferences, they are saved into ~/Library/
Preferences/org.puredata.pd.plist and will be picked up by every Pd
that you launch - e.g. the plain Pd versions.
So saving preferences only works if you only ever need one Pd setup.
This is fine if you only use the full Pd extended.
For my purposes, I like to write Pd preferences directly into the
preferences file and then move it into the Pd.app bundle. This works
for every Pd version, and if you never actually save preferences from
within Pd, you can run different Pd.app bundles for different needs.
OR, if you do save preferences, you can just re-move the
org.puredata.pd.plist back into the appropriate bundle to restore
separate preferences for different Pd.app bundles.
I went so far as writing a bash script that downloads Pd, writes
preferences, moves them into the bundle, copies any libraries,
abstractions or patches I want into the bundle, and renames the bundle
to a custom name.
I think this is similar result to Hans' standalone app generator,
though I haven't checked out how that works. (i think it's a build
process, more than plain script).
I've copied my template script below in case anyone wants to use it.
You would have to customise it to your needs though. Also, if you
want to start a given patch at runtime, there are some limitations
with moving the .app bundle to different locations.
cheers
Nick
http://soundsorange.net
here's the script
---
#!/bin/sh
current_dir=`pwd`
date_time=`date +20%y%m%d_%Hh%M`
echo
echo - current directory is:
echo ${current_dir}
# edit CUSTOM_PD_NAME to name your new customised Pd .app bundle
CUSTOM_PD_NAME=Pd_Custom.app
## edit PD_PATCH to name patch to load on starting the Pd.
#PD_PATCH=start_patch.pd
## edit PD_PATCH_DIR to name patch directory within custom Pd bundle.
#PD_PATCH_DIR=custompath/patches
# edit PD_INST_ORIGINAL to match Pd .app version and location
PD_INST_ORIGINAL=${current_dir}/Pd-0.41-4.app
PD_INST=${current_dir}/${CUSTOM_PD_NAME}
PD_BUNDLE_PATCH_DIR=/Contents/Resources/${PD_PATCH_DIR}
echo sudo cp ${current_dir}/${PD_PATCH} ${PD_INST_ORIGINAL}$
{PD_BUNDLE_PATCH_DIR}
## NOTE - in bash script file testing, spaces are important!
## NOTE also -f tests specifically for file, -e for existance of
anything (eg app bundle)
## example:
#if [ -f testfilename ]
#then
# echo testfilename exists!
#fi
#if [ ! -f testfilename ]
#then
# echo testfilename doesn't exist!
#fi
# clean up previous raw Pd app
if [ -e $PD_INST_ORIGINAL ]
then
echo - Delete the old vanilla Pd app just in case it has been modified.
sudo rm -rf $PD_INST_ORIGINAL
else
echo - No old Pd app bundle exists.
fi
# clean up previous customised Pd app
if [ -e $PD_INST ]
then
echo - Delete the existing customised Pd in case it has been modified.
sudo rm -rf $PD_INST
else
echo - No existing customised Pd app bundle exists.
fi
# download new Pd if needed (if it doesn't already exist)
if [ ! -e pd-0.41-4.mac.tar.gz ]
then
echo - Downloading fresh vanilla Pd.
curl -o pd-0.41-4.mac.tar.gz
http://crca.ucsd.edu/~msp/Software/pd-0.41-4.mac.tar.gz
else
echo - No need to download fresh vanilla Pd.
fi
# unzip the pd vanilla app that was either just downloaded or already
existed
echo - Untar the fresh vanilla Pd.
tar -zxf pd-0.41-4.mac.tar.gz
# backup any old plist as before, and then remove it
if [ -e ~/Library/Preferences/org.puredata.pd.plist ]
then
echo - Backing up old org.puredata.pd.plist and deleting it ready for
new one.
echo - Backup file is: ~/Library/Preferences/org.puredata.pd.backup_$
{date_time}.plist
cp ~/Library/Preferences/org.puredata.pd.plist ~/Library/Preferences/
org.puredata.pd.backup_${date_time}.plist
rm ~/Library/Preferences/org.puredata.pd.plist
fi
# copy any libraries you wish from /copy_to_externs/ directory into Pd
bundle extras...
echo - Copying externals and patches into the Pd app bundle.
cp -R ${current_dir}/copy_to_externs/* ${PD_INST_ORIGINAL}/Contents/
Resources/extra/
# make directory for patches
sudo mkdir -p ${PD_INST_ORIGINAL}${PD_BUNDLE_PATCH_DIR}
# copy custom patches into this directory
sudo cp ${current_dir}/${PD_PATCH} ${PD_INST_ORIGINAL}$
{PD_BUNDLE_PATCH_DIR}
echo - Preparing permissions in the Pd app bundle.
# prepare file and directory permissions
sudo chmod -R 0755 ${PD_INST_ORIGINAL}/Contents/Resources/extra/*
sudo chmod -R 0744 ${PD_INST_ORIGINAL}/Contents/Resources/extra/*.pd
sudo chmod -R 0755 ${PD_INST_ORIGINAL}${PD_BUNDLE_PATCH_DIR}/*
sudo chmod -R 0744 ${PD_INST_ORIGINAL}${PD_BUNDLE_PATCH_DIR}/*.pd
# create the new plist below. Make sure
Re: [PD] Script in osx
On Oct 28, 2008, at 3:10 PM, Vincent Rioux wrote: hi, so you mean that pd will read its preference file in /Contents/org.puredata.pd.plist yes - but only if no preference file exists in ~/Library/Preferences/ does it override the ~/Library/Preferences/ one? no. therefore you have to rename (backup) or delete this version of the org.puredata.pd.plist if you want Pd to find its version in Pd*.app/Contents/ it's been a while since i managed to use pd command line on osx the only way i found was to compile it and move the extras from Pd- extended yeah, this is essentially what i do - starting with a plain Pd .app bundle, and copying in only the externals i need from Pd-extended. This way I have a purpose-made Pd.app without the bloat. anyway this preferences trick sounds really good. thanks it's not bad, but does have some limitations if you want to load a patch from within the bundle. basically, you can only refer to absolute paths, so if you put a patch in the bundle, designed for a path of /Applications/Pd*.app/Contents/Resources/my-patch.pd then it will only work when the Pd app is in /Applications directory. I think Hans' Pd standalone app maker overcomes this problem, but I haven't tried it yet. hope this script helps some anyway. Nick vincent ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
[PD] problems with netsend~/netreceive~ (OSX-Windows)
I've just been trying unsuccessfully to get Olaf Matthes' netsend~/ netreceive~ working from OSX (PPC) to Windows, both on Pd. On the OSX sending end, I get the following error in the Pd console. netsend~: connecting stream socket: Protocol not available (42) I've made sure firewalls are all turned off on the Windows side, and I'm fairly sure I've done this for the OSX end as well. I can use the same machines and network to send successfully from Pd Windows to Pd OSX. Also I've successfully used netsend~/netreceive~ from Pd (Linux) - Max/MSP (OSX/Intel). -can anyone help? I can't find much information on this error online. thanks Nick ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] PD on Iphone/Palm, etc.
hi JN, I appreciate this sentiment. ( I've been a little involved with the RJDJ project as well, though I don't own an iPhone and even my iPod mini is many generations old now, but still does its job well). In some senses, the wealth argument is a slippery slope - and any of us with a laptop or even a decent desktop are much more wealthy than the majority of the world. But rather than debate this, I'd like to point out the positives: - The RJDJ project has actually injected quite a bit of new energy into making Pure Pd abstractions. Pure Pd is useful to everybody, and probably very useful to a project to get Pd onto OLPC. - Also, RJDJ ultimately want to work with other suitable mobile devices as well. I am interested in the PD on OLPC idea, and I'm in France (though I'm busy this month) - so I'll contact you and see if I could help. (although my linux skills are not as deep as many, so if more capable people can contribute first that's great) Nicholas Mariette --- http://soundsorange.net On Oct 17, 2008, at 10:41 AM, Jean-Noël Montagné wrote: Hello from real world, As several of you might already know, now it is official. Check this out: http://rjdj.me A fully functional Pd just hit the iphone appstore, and you can create Pd patches with the system and run them on the iPhone. I really appreciate that some of you, developpers, like to invent PD devs for such mobile devices. Great developpements. Big fun. But you spend a lot of time for those games for rich, for an elite. In many countries, just the price of an Iphone and accessories is enough to feed one starving family FOR A YEAR ! [For the first time ever, this year, this evening, about 850 million humans will go to bed hungry, like yesterday, and may be tomorrow]. When some of our best PD brains are working (with FLOSS) for few riches only, it is a mystery for me. BUT some PD-developpements for handheld devices have been done to run PD on small CPUs: has someone succeeded in installing PD on an OLPC XO ? I have no competency to do it, but if some people in france want to try, we have some XO available in the hackerspace tmp/lab in Vitry. Contact OLPC-france. JN ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] low pass filter for floats
another way to filter floats is to do: | [sig~] | [lop~][metro] |/ [snapshot~] | nick On Oct 8, 2008, at 2:15 PM, cyrille henry wrote: Martin . a écrit : Very simple question: what is an object that can low pass filter floats (not ~)? iir, fir, median etc from the mapping lib. cyrille is there a searchable database on pd objects? googling only found this http://en.flossmanuals.net/PureData/ListofObjects cheers, Martin ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] 6 speakers in a circle, ambi? vbap?
don't know if the zip file got through or not. Here are text versions. hopefully they come through ok. nick nmg-bf-encode~.pd Description: Binary data nmg-meters4~.pd Description: Binary data test-ambi2quad.pd Description: Binary data nmg-bf2quad~.pd Description: Binary data On Oct 6, 2008, at 12:18 PM, Nicholas Mariette wrote: hi Hans, VBAP is probably better if you expect people to move around in the installation space and you wish to pan individual sounds in different directions. First order ambisonics works fine on 6 speakers, but it would be more suited to immersive, enveloping ambient sounds, or a more constrained audience. Horizontal VBAP will use only the nearest 2 speakers to simulate a sound in one direction, while ambisonics decoding will generally use all speakers for the same simulated sound source. Thus VBAP sounds will often seem to snap to speaker positions when panning around the circle, whereas ambisonic panned sounds will not reveal the individual speakers as much, but the illusion will not work as well away from the centre of the room. I like the description I heard recently from Bruce Wiggins on the difference between VBAP and ambisonics - that VBAP is exactly correct for panning a sound when it's in the direction of a speaker, but quite wrong when panning exactly in-between two speakers. Ambisonics on the other hand is equally wrong (to a lesser degree than VBAP between speakers) for a sound in any direction. In many cases, the best spatialisation solution could be a mixture of both VBAP (for directional sounds) and ambisonic (for spatial ambience) - unless the audience isn't able to get too close to the speakers, or you use higher order ambisonics. The IEM ambi stuff is all in Pd extended browser... I guess you've seen that. I've attached some patches that I have for encoding to quad. Only problem is the latest 2 releases of Pd extended seem to have problems loading mtx_*~ object. I got it working with Pd extended 0.39.3 Output is for 4 speakers, but it's easy enough to change the speaker specifications in the nmg_bf2quad~ abstraction - go into the pd calc-matrix subpatch, make up a new speaker spec, print the decode matrix and copy that back into the patch. Hope this helps. Nick Mariette http://soundsorange.net test_ambi.zip On Oct 6, 2008, at 6:39 AM, Hans-Christoph Steiner wrote: So I am working on sound for a permanent installation involving 6 speakers in a large circular room. Are 6 speakers enough to do anything useful using ambisonics? Or am I better off using the simpler vbap? I am just starting to understand the basics of ambisonics, thanks to Florian's intro. I will be programmatically controlling the position of the samples, since it will be synced up with a video. So I don't think I really need the GUIs like cubemixer. Are there any simple, working demos of the IEM ambi stuff? .hc I have the audacity to believe that peoples everywhere can have three meals a day for their bodies, education and culture for their minds, and dignity, equality and freedom for their spirits. - Martin Luther King, Jr. ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] 6 speakers in a circle, ambi? vbap?
for panning inside the array, nothing other than WFS will give you a reasonable source image inside the room. often for ambisonics, you'd just xfade from the XYZ channels more into the W (omni) channel within a certain radius. same with VBAP - just pan all speakers. (or turn spread all the way up). Nick On Oct 6, 2008, at 12:33 PM, Thomas Grill wrote: one more thing: If you want to position your virtual sound sources _inside_ the circle of speakers i am not sure if this is possible with ambisonics at all - and it's also difficult for VBAP depending on the triangulation it uses... you might want to check or manually specify it. In such a case I personally would want to have some center speakers and would have two VBAP-driven rings (in the middle and on the periphery) between which i would do conventional panning. I once used that i the case of a planetarium where the audience is situated in a ring between the center and the circular wall. I had 3 center speakers facing to the wall, 5 peripheral speakers facing to the center and two subwoofers. all the best, Thomas Am 06.10.2008 um 06:39 schrieb Hans-Christoph Steiner: So I am working on sound for a permanent installation involving 6 speakers in a large circular room. Are 6 speakers enough to do anything useful using ambisonics? Or am I better off using the simpler vbap? I am just starting to understand the basics of ambisonics, thanks to Florian's intro. I will be programmatically controlling the position of the samples, since it will be synced up with a video. So I don't think I really need the GUIs like cubemixer. Are there any simple, working demos of the IEM ambi stuff? .hc -- -- I have the audacity to believe that peoples everywhere can have three meals a day for their bodies, education and culture for their minds, and dignity, equality and freedom for their spirits. - Martin Luther King, Jr. ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/ listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] CPU usage
ahh. yes, that's familiar. I've had that problem before, about 2 years ago, using an RME Fireface 400 with a Powerbook G4 on OSX 10.4 for multichannel performance. quite nasty. I think I recall that it came down to Portaudio, so I think I fixed the problem by using the Jack interface. But I'm not 100% sure of that. try jack and see if that fixes it. anyone else know a fix? Nick Mariette http://soundsorange.net On Sep 7, 2008, at 9:13 PM, mami music wrote: Hi list. Im using a pd patch to play .ogg files all day long on a windows computer. The files are played one after another reading them from a folder in the computer. At some point (let's say once or twice every 12 hours) the CPU usage of pd.exe goes to the top and the file that is being played slows down as if it was downsampled, and gets disstorted. This lasts for like 5 minutes. And then the reproduction goes back to normal. Can someone from the list gimme a clue about this behaviour and a way to work it? Thanks Daniel ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] earplug~ or FIR~ for HRTF?
IEM's bin_ambi is a sophisticated binaural rendering system via higher order Ambisonic spatialisation to virtual speaker arrays. http://iem.at/Members/noisternig/bin_ambi FIR~ is very CPU intensive for HRTF processing. It's much better to use frequency domain convolution with fft~ ifft~ which is the case with bin_ambi. I've listed some publicly available HRTF sets on my blog here: http://blog.soundsorange.net/2005/11/09/hrtf/ Nick http://soundsorange.net On Sep 4, 2008, at 4:09 PM, Claude Heiland-Allen wrote: Hi all, I'm considering whether to use the earplug~ HRTF external or some alternative implementation of binaural spatialization. On the plus side, earplug~ seems quite easy to use. On the down side, earplug~ seems not to handle any sample-rate stuff at all, so I'm wondering which samplerate the impulse responses in the earplug_data.txt are sampled at (because obviously it would be somewhat weird to use them at another rate...). I don't really need the interpolation provided by earplug~ either, so I guess I could save some CPU by using FIR~ directly, but then I need to obtain some HRIR's (ideally both at 44100Hz and 48000Hz sample rates). So: has someone already made a binaural processing patch using FIR~ and some set of impulse responses and would care to share it? Some context for the curious: I'm trying to auralize 4D space using 4D room simulation, with an ear made up of several co-solid listening points in the 4D space, each mapped to a 3D source point for binaural processing. Thanks for any tips, Claude -- http://claudiusmaximus.goto10.org ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
[PD] help needed: Pd command line options on OSX
hi all, I'm trying to start Pd from the OSX terminal with command line options. For example, /Applications/Pd-0.41-4.app/Contents/Resources/bin/pd -open /Users/ nick/Desktop/testpatch.pd This successfully opens Pd, but ignores the options (ie, doesn't load the testpatch.pd) I've tried it on OSX 10.5 and 10.4, with Pd basic and extended, all with no success. How can I use command line options for Pd on OSX? thanks, Nick Mariette LIMSI-CNRS, Orsay France ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
