I'm working on having this implement a 4th order ambisonic decoder. The cool thing here is that there is a dual core arm processor on board that can run linux, so I can have a 40 or more channel hardware interface and have it act as an output that takes a 4th order ambisonic signal from software. Or at least that is the idea.
There actually seems to be enough io to output to well over 100 channels. And there Is a heap of DSP resources on this thing. I don't know how popular this would be or how much time it will take, however there Is a huge amount that can be done here. On Thursday, May 23, 2013, Ben Bloomberg wrote: > I have some FPGA code to drive 4 and 8 channel Burr Brown DACs (PCM3168a, > PCM1608) I could pass along. > > It's quite messy and I haven't worked on it in a while (4 years) but it > also implements a 3rd order ambisonic encoder/decoder and streaming input > via USB. The coefficients are all stored in a LUT in onboard memory to > avoid lots of multiplication/trig. It wouldn't be too hard to modify it to > grab wavs from an SD card. I've been using the Nexys2 platform from > digilent. FPGALink is a pretty cool USB library that does highspeed IO. > PCM3168 is a tough chip to solder though... > > Ben > > > > On Thu, May 23, 2013 at 8:47 AM, Alexis Shaw > <alexis.s...@gmail.com<javascript:;>> > wrote: > > > I am working on a system that can drive 40 or so channels based on a zynq > > 7020 processor. > > > > The zedboard which is the dev kit i am working with costs 320 for > academics > > and ~400 for commercial uses. > > > > This will then drive a series of dac boards that I am working on. They > are > > likely to cost about 200 each for 8 channels (ESS). > > > > Cheaper dac boards could be invisiged, or even direct driving digital > class > > D modulators. I am mainly working on the player-control hardware. > > > > Regards. > > > > > > On Thursday, May 23, 2013, Augustine Leudar wrote: > > > > > Hi Alexis, > > > yes the box would need DA converters if thats what you mean. I am > > thinking > > > 8 outputs to start with min 16 bit 44.1 but it would be nice to have > > > something that could be easily customisable for more.... > > > > > > On 23 May 2013 14:08, Alexis Shaw > > > <alexis.s...@gmail.com<javascript:;><javascript:;>> > > > wrote: > > > > > > > Do you need internal dacs. > > > > > > > > How many channels do you need implemented. > > > > > > > > I am working on a solution to the same problem at the moment. > > > > > > > > On Thursday, May 23, 2013, Marc Lavallée wrote: > > > > > > > > > That's an interesting idea: clustering Raspberry Pis > > > > > with cheap 8 channels usb modules and jackd2. > > > > > -- > > > > > Marc > > > > > > > > > > "Michael Chapman" <s...@mchapman.com <javascript:;><javascript:;> > > > > > <javascript:;>> > > a > > > écrit : > > > > > > > > > > > > Hello all, > > > > > > > I want to start making a standalone 8 channel player (maybe > more) > > > - > > > > > > > something that can be used in museums, festivals etc for sound > > > > > > > installations that can just be turned on and will instantly > start > > > > > > > looping a > > > > > > > multichannel composition on an sd card. At the moment I am > using > > > > > > > rather unwieldly setups of small computers and multi channel > > > > > > > soundcards such as RME and motu. Cables can easily be jogged > > loose > > > > > > > and it would be nice to have something more robust and that > staff > > > > > > > can easily just turn on and off. So I have looked into the > > arduino > > > > > > > (only 12 bit audio) and the raspberry pi but neither seem > > > > > > > suitable . Systems already avaailable are ludicrously expensive > > > > > > > (1000s of euros) Has anyone got any ideas on the best way to go > > > > > > > about this - is there something maybe Im missing with the > > raspberry > > > > > > > pi/ arduino that could be customised ? Perhaps a custom made > > > > > > > circuit board ? Ideas ? best, > > > > > > > Gus > > > > > > > > > > > > If you are thinking of wider applications I would really > encourage > > > > > > you to go modular ... that is daisy chainable devices: > > > > > > > > > > > > 2+2+2+2 = 8 > > > > > > 4+4 = 8 > > > > > > > > > > > > 2+2+2+2+ ... = "maybe more" > > > > > > > > > > > > even if it is > > > > > > 8+ ... = "maybe more" > > > > > > > > > > > > Good hunting, > > > > > > > > > > > > Michael > > > > > _______________________________________________ > > > > > Sursound mailing list > > > > > Sursound@music.vt.edu <javascript:;> <javascript:;> <javascript:;> > > > > > https://mail.music.vt.edu/mailman/listinfo/sursound > > > > > > > > > -------------- next part -------------- > > > > An HTML attachment was scrubbed... > > > > URL: < > > > > > > > > > > https://mail.music.vt.edu/mailman/private/sursound/attachments/20130523/46a19a71/attachment.html > > > > > > > > > _______________________________________________ > > > > Sursound mailing list > > > > Sursound@music.vt.edu <javascript:;> <javascript:;> > > > > https://mail.music.vt.edu/mailman/listinfo/sursound > > > > > > > > > > > > > > > > -- > > > 07580951119 > > > > > > augustine.leudar.com > > > -------------- next part -------------- > > > An HTML attachment was scrubbed... > > > URL: < > > > > > > https://mail.music.vt.edu/mailman/private/sursound/attachments/20130523/92db3b54/attachment.html > > > > > > > _______________________________________________ > > > Sursound mailing list > > > Sursound@music.vt.edu <javascript:;> <javascript:;> > > > https://mail.music.vt.edu/mailman/listinfo/sursound > > > > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: < > > > https://mail.music.vt.edu/mailman/private/sursound/attachments/20130523/f309bbc8/attachment.html > > > > > _______________________________________________ > > Sursound mailing list > > Sursound@music.vt.edu <javascript:;> > > https://mail.music.vt.edu/mailman/listinfo/sursound > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > https://mail.music.vt.edu/mailman/private/sursound/attachments/20130523/7d26099c/attachment.html > > > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu <javascript:;> > https://mail.music.vt.edu/mailman/listinfo/sursound > -------------- next part -------------- An HTML attachment was scrubbed... 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