Here's a related open source project: http://sourceforge.net/apps/mediawiki/manyears/
Excerpt: "The goal of 8 Sounds USB is to have an synchronous audio capture card with low power consumption and a small form factor with 8 input channels and 2 output channels." Marc Bo-Erik Sandholm <[email protected]> a écrit : > Hi > The info about Dave's plan to look in to the possibility to create a > 16 channel sound card for the BeagleBone triggered me to start > rethinking on how to Get a more portable solution for recording with > my coresound microphone. ( And I am cheap and likes to fool my self > that to build it is more cost effective than buying expensive ) > > After a bit of Google usage, it seems difficult to create a Firewire > interface or add cardbus or expresscard to a BeagleBone ( or other > arm board) to use with my MOTU traveler MK3, I got another idea! It > is possible to get the MOTU Traveler MK3 to output the 4 Mic Inputs > channels from the coresound mic to the 2 SPDIF interfaces it has. > > To me it seems possible to create a cape with dual spdif interfaces > that would make it possible to record 2 spdif stereo streams with a > beagle bone. > > The chip below uses I2S interfaces, and I suspect it is possible to > find linux drivers for this chip. > http://www.diyaudio.com/forums/digital-source/10745-crystal-cs8415-receiver.html > http://www.cirrus.com/en/pubs/rdDatasheet/cs8415A_eb-2.pdf > > As usual I do not have the competence to create this my self :-). > > Any comments? > > - Bo-Erik > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Dave Malham Sent: > den 5 juli 2012 16:16 To: Surround Sound discussion group > Subject: Re: [Sursound] preferred (small) linux distro for audio? > > Not yet, I'm just testing the waters, so to speak, at present. I'm > hopefully going to be doing some preliminary tests over the summer, > but I won't be able to start serious work until late autumn as I > don't retire till the end of September. I won't put up the > Kickstarter page until I have a clearer idea of timescales as I would > want to be sure I can deliver what I promise on it :-) > > Dave > > On 05/07/2012 15:03, umashankar manthravadi wrote: > > where do i sign up. have you started a kickstarter page? umashankar > > > > i have published my poems. read (or buy) at > > http://stores.lulu.com/umashankar > > > Date: Thu, 5 Jul 2012 14:57:07 +0100 > >> From: [email protected] > >> To: [email protected] > >> Subject: Re: [Sursound] preferred (small) linux distro for audio? > >> > >> It will be balanced - not looking at anything else, especially as > >> all dacs of any quality have balanced outs. My initial thoughts > >> for a a Kickstarter reward structure is to do the usual special > >> for early adopters which would, in this case, be what amounts to a > >> cape (I'm wary of doing an actual cape as that might mean too much > >> noise coupling from the CPU board into the analogue side of > >> things) with people people who invest more getting the Beaglebone > >> as well. Only in the second tranche would the dedicated CPU come > >> out though whether on the same board or as a second board, I'm not > >> sure yet, for the same reason as given above on noise coupling. > >> > >> Current thoughts have connectors for the audio on 25 pin D types > >> (a la Tascam etc.) so that they can either go direct to an > >> off-the-shelf loom which plugs into your amps/speakers. > >> Alternatively the board(s) could go into a rack unit with > >> connections from the D types to xlr's on the back (or front) of > >> the unit - this might include dedicated balanced line drivers to > >> extend the usable range. > >> > >> Dave > >> > >> > >> On 05/07/2012 14:41, Hugh Pyle wrote: > >>> +1. If you design a BeagleBone cape with 16 channels out > >>> (balanced +or > >>> not, I don't really mind), or a dedicated system that includes > >>> the CPU, I'll want several :-) > >>> > >>> On Thu, Jul 5, 2012 at 8:16 AM, GP <[email protected]> > >>> wrote: > >>>> Put me on your pre-order list already Dave! :-). > >>>> > >>>> Cheers Garth > >>>> Sent on the Move > >>>> > >>>> On 05/07/2012, at 19:48, Dave Malham <[email protected]> > >>>> wrote: > >>>> > >>>>> Wow! Fantastic response .. lots to think about. Will let you > >>>>> know how I get on. Part of the problem is hardware as I was > >>>>> unable (at the time I got this board) to find a case with a HD > >>>>> Audio front panel so it currently thinks it's running in AC97 > >>>>> mode, but I'm going to knock something up to get round this. In > >>>>> the mean time I'm going to play with the suggestions people > >>>>> have made (Puppy is currently booting). > >>>>> > >>>>> I'm also interested in the paper that Fernando gave us a link > >>>>> to. Although I don't want to use the Mamba hardware, I _am_ > >>>>> interested in the possibilities for a dedicated multichannel > >>>>> player for installation work (another retirement project!) What > >>>>> I'm looking at at present is a multichannel dac linked directly > >>>>> (not via USB or owt like that) to an Arm processor that'll just > >>>>> play a multichannel file off of a USB stick or SD card. For > >>>>> prototyping I'll be using a BeagleBone (as I definitely don't > >>>>> want the extra bells and whistles of the BeagleBoard itself) - > >>>>> I'd prefer to use the RPi but the chip used (at least, > >>>>> according to the manual) appears to have a crippled McASP port > >>>>> that can only handle stereo, whereas the ARM on the BeagleBone > >>>>> has a good enough implementation of McASP that it can do 16 > >>>>> channels at 48k for definite (EAOE) and probably up to 96k > >>>>> without too much trouble. If initial tests prove the concept, > >>>>> I'll look KickStarter funding. The idea is to have an > >>>>> absolutely rock solid box that just plays stuff without any of > >>>>> the hassles of systems relying on computers (ha! That'll be the > >>>>> day)) The most it would have is an on/off switch and play > >>>>> controls - but it would output up to 16 channels, balanced, 24 > >>>>> bits. > >>>>> > >>>>> Dave > >>>>> > >>>>> > >>>>> On 05/07/2012 07:50, Fernando Lopez-Lezcano wrote: > >>>>>> On 07/04/2012 06:40 PM, Marc Lavallée wrote: > >>>>>>> Fernando Lopez-Lezcano<[email protected]> a écrit : > >>>>>>> > >>>>>>> Single board computers are interesting platforms to create > >>>>>>> dedicated ambisonic players. > >>>>>> Indeed! > >>>>>> > >>>>>>> Let us know how the beagle board perform with a port of > >>>>>>> Planet CCRMA. ;-) > >>>>>> I will, I just have to find the time to test. I'm curious > >>>>>> whether a small box like that can drive 1/2 of the Mamba box I > >>>>>> was driving from a regular desktop. 32 channel playback > >>>>>> through an ethernet port[*]... > >>>>>> > >>>>>> -- Fernando > Sursound mailing list > [email protected] > https://mail.music.vt.edu/mailman/listinfo/sursound > _______________________________________________ > Sursound mailing list > [email protected] > https://mail.music.vt.edu/mailman/listinfo/sursound > _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound
