Re: [slim] Community Funded Squeezebox Replacement - Would you be interested?
JohnSwenson wrote: > This is an issue I am very interested in. Dirac is a very special room > correction suite, I think it is quite a bit better than the others and > would very much like to get it into the CSOS flow. > > Dirac is a software package (NOT free) which comprises two pieces, the > analysis part and the runtime part. The analysis takes the measurements > and figures out what the filter should look like, and the runtime > implements the filter in real time in your playback chain. Theoretically > these two could be on different OS's and machines. So you analyze the > room with your laptop and put the runtime on the wandboard. > > The dirac company has said that the runtime has been optimized to not > use very much processing horsepower so it should run on a wandboard. > They do have linux versions available which run on ARM processors. > > So the fun part is how this runtime gets integrated into the flow. Does > it get somehow attached to sqeezelite, or is it a plugin for LMS etc. > The off the shelf linux version creates a virtual ALSA device for your > application to send samples to, and it talks to the actual ALSA > hardware output device. This could easily be implemented in current > CSOS flow. There may be a problem though, we are using squeezelite to > implement a really good upsampling filter, if we keep this in place > dirac would then be given a 352.8 or 384 stream and I'm pretty sure that > is not going to work. > > I would prefer that dirac gets plugged in before the upsampling and I'm > not sure how to do that. > > I need to get some discussions going with the developers to find out > what they do about sample rates etc. If they can do the upsampling with > a custom upsampling filter that would make things much easier. > > John S. As far as I can tell, their hardware isn't as powerful as a Wandboard (http://www.analog.com/en/processors-dsp/sharc/adsp-21369/products/product.html) A quote from their support forum: "devteam" post=13510 wrote: > > "djreflux" post=13464 wrote: > > I don't understand what the fuss is about. > > Dirac isn't revolutionary, by using IIR and FIR they can make the > > processing lighter on overheads making it perfect for hardware ports. It > > has a nice front end for end users thats simplified and great > > averaging/multiple measurement analysis. All they have done is port it > > to run on the Minidsp Sharc board. Most users would struggle to get as > > good a result as what this software can automate, but you can't do much > > else with the software. > > What hasn't been mentioned is Are the filters generated to send to > > the minidsp identical to the Native computer filters of Dirac Live. > > There is limited power on the hardware and I wouldn't be surprised if > > the filters have a few less taps/biquads. > > Deqx uses multiple sharc's to achieve its multichannel power remember. > > > > The end result is the sound though, and Dirac can sound great. > > > > It's up to the user. If you want to run on hardware DSP, minidsp give > > you whatever you need. > > Either a closed automated way for room correction or a more open > > professional route with your choice of more powerful Software filter > > generation such as Acourate (which can give you automated filters too). > > Both will cost the same amount and have the same hardware.> > > > @ DJreflux, > > Good question! what's the fuss all about? :-) Well, although IIR and > FIR are indeed filters that we've been having on miniDSP platforms for > a long time (and you'd find in other software/hardware platforms), the > hard work is down to how you "come up" the correct filters unless you > do have a PHD in acoustic and math modelling. (I know I don't... :-) > > 1) For one it starts with a measurement (in the case of Dirac, > multiple of them). What you do with all these measurements, analysis > and come up with the smart to make sure that a) you don't try to solve > something that you'll never be able to solve, b) you fix the problem > at its source (e..g impulse response) c) you make it easy to the > customer d)All together hoping you make it sounds good. Though there > are some very good software out there, that one step alone is really > not to be underestimated here. That's the smart behind Dirac's > solution and the many years of research, quite a few patents and > brainchild of few smart PHD's @ Dirac. > 2) You've got a very good point that fitting on a hardware that is low > power, doesn't require a GHz proc and runs passively is another > challenge. Coming up with huge FIR banks has been done for many years > now. There are some good implementations out there (e.g. DRC open > source) but once again, that's something with its limitations. Dirac > took a complete different path at solving the problem and that's how > we can make it happen. To you very good question: > " Are the filters generated to send to the minidsp identical to the > Native computer filters of Dirac Li
Re: [slim] Community Funded Squeezebox Replacement - Would you be interested?
bakker_be wrote: > Hi there, how could this (http://www.minidsp.com/products/dirac-series) > be integrated into the signal chain without losing the benefits of > John's DAC? This is an issue I am very interested in. Dirac is a very special room correction suite, I think it is quite a bit better than the others and would very much like to get it into the CSOS flow. Dirac is a software package (NOT free) which comprises two pieces, the analysis part and the runtime part. The analysis takes the measurements and figures out what the filter should look like, and the runtime implements the filter in real time in your playback chain. Theoretically these two could be on different OS's and machines. So you analyze the room with your laptop and put the runtime on the wandboard. The dirac company has said that the runtime has been optimized to not use very much processing horsepower so it should run on a wandboard. They do have linux versions available which run on ARM processors. So the fun part is how this runtime gets integrated into the flow. Does it get somehow attached to sqeezelite, or is it a plugin for LMS etc. The off the shelf linux version creates a virtual ALSA device for your application to send samples to, and it talks to the actual ALSA hardware output device. This could easily be implemented in current CSOS flow. There may be a problem though, we are using squeezelite to implement a really good upsampling filter, if we keep this in place dirac would then be given a 352.8 or 384 stream and I'm pretty sure that is not going to work. I would prefer that dirac gets plugged in before the upsampling and I'm not sure how to do that. I need to get some discussions going with the developers to find out what they do about sample rates etc. If they can do the upsampling with a custom upsampling filter that would make things much easier. John S. JohnSwenson's Profile: http://forums.slimdevices.com/member.php?userid=5974 View this thread: http://forums.slimdevices.com/showthread.php?t=97881 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] End of Last FM streaming for Squeezebox - alternatives (for use in UK) ?
MarkusE wrote: > Fortunately I have a huge music collection (CDs!) as well (and so am I > one of the dinosaurs ;)). The point is: LastFM was one important channel > to discover new music. As yeomanspc says in the second thread about this > topic Yes, that will be a real loss. *Location 1:* VortexBox 4TB (2.2) > LMS 7.8 > Transporter, Touch, Boom, Radio w/Battery (all ethernet except Radio) *Location 2:* VBA 3TB (2.2) > LMS 7.8 > Touch > Benchmark DAC I, Boom, Radio w/Battery (all ethernet except Radio) *Office:* Win7(64) > LMS 7.8 > SqueezePlay *Spares:* VBA 4TB, SB3, Touch (3), Radio (3), CONTROLLER *Controllers:* iPhone4S & iPad2 (iPeng7 & Squeezepad), CONTROLLER, or SqueezePlay 7.8 on Win7(64) laptop Ripping (FLAC) - dbpoweramp, Tagging - mp3tag, Streaming - Spotify garym's Profile: http://forums.slimdevices.com/member.php?userid=17325 View this thread: http://forums.slimdevices.com/showthread.php?t=101228 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] End of Last FM streaming for Squeezebox - alternatives (for use in UK) ?
garym wrote: > ... But for my *real* music collection. I own it, rip it, and back it up > to lots of locations. I know this makes me a dinosaur! Fortunately I have a huge music collection (CDs!) as well (and so am I one of the dinosaurs ;)). The point is: LastFM was one important channel to discover new music. As yeomanspc says in the second thread about this topic yeomanspc wrote: > But in all this, much as I liked LastFM for discovering new music MarkusE's Profile: http://forums.slimdevices.com/member.php?userid=13760 View this thread: http://forums.slimdevices.com/showthread.php?t=101228 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] What can I do now? Squeezebox classic died
Evan_E wrote: > Hmm...the $600 price was for a supposedly new-in-box Touch, but I > suppose at that price I could afford to get a used dud Classic or two > and still come out ahead. Actually, I just got one from ebay over the weekend ($120), and it was in fine condition and worked without a problem. But I did make sure I was getting it from a reputable dealer. EricBergan's Profile: http://forums.slimdevices.com/member.php?userid=4746 View this thread: http://forums.slimdevices.com/showthread.php?t=97577 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] What can I do now? Squeezebox classic died
Evan_E wrote: > Hmm...the $600 price was for a supposedly new-in-box Touch, but I > suppose at that price I could afford to get a used dud Classic or two > and still come out ahead. Just for example, $99 opening bid, no bids to date: http://www.ebay.com/itm/Logitech-Slim-Devices-Squeezebox-Classic-Streaming-Internet-Radio-Wi-Fi-Music-/191115737167?pt=US_Internet_Media_Streamers&hash=item2c7f62b84f Or $149 BIN (free shipping): http://www.ebay.com/itm/Slim-Devices-Logitech-Squeezebox-Classic-V3-wireless-internet-radio-excellent-/321366560470?pt=US_Internet_Media_Streamers&hash=item4ad2f08ed6 Or $139 BIN (free shipping, remote missing battery cover): http://www.ebay.com/itm/Logitech-Slim-Devices-Squeezebox-Wireless-Internet-Radio-830-12-/221404816404?pt=US_Internet_Media_Streamers&hash=item338cc16414 get.amped's Profile: http://forums.slimdevices.com/member.php?userid=10022 View this thread: http://forums.slimdevices.com/showthread.php?t=97577 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
Re: [slim] Long time user, lost
pfarrell wrote: > The "lubuntu" is obviously a grandson of Debian. Yes, all Ubuntu derivats are debian and the "l" Ubuntu is pretty new with using well chosen tools and applications making it a light weight distro. My old Atom D330 feels pretty fast with it. For some a headless system is enough but since my music server runs often 24/7 i use it for several other simple tasks. Transporter (modded) -> RG142 -> Avantgarde Acoustic based 500VA monoblocks -> Sommer SPK240 -> self-made speakers Wombat's Profile: http://forums.slimdevices.com/member.php?userid=4113 View this thread: http://forums.slimdevices.com/showthread.php?t=101259 ___ discuss mailing list discuss@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/discuss
