[PD] [OT] choice of sound cards for 16 output channels

[Winfried Ritsch]

a sync hack I did once, ( since fons sync plugin is cpu-heavy for small arm 
computers):  open case and solder out one quartz (oscillator) of one and make 
a cable to the second boards quartz, so they are in sync and combine them 
under alsa. 

Since audio quality is not the best if powering over ComputerUSB, another 
hack: cut the USB power and make a filtered 5V one or add additional filters. 
but this is a hack... not a standard solution.

 mfg
 winfried


Am Freitag, 6. Mai 2016, 10:27:29 schrieb Miller Puckette:
> On caveat: you probably can't sync these together, so you will occasionally
> get an audio error on output as Pd 'resyncs' them.  There are various
> ways of working around this.  Maybe the best way in your particular
> situation is to have two copies of Pd and use netsend/receive to sync them
> at message level.  If you do this in short segments (< 10 minutes or so)
> the time slippage shouldn't exceed what you get anyhow because of speaker
> placement.
> 
> cheers
> Miller
> 
> On Fri, May 06, 2016 at 05:07:06PM +0200, Peter Venus wrote:
> > well,
> > if it should be on the cheap side,
> > and the need for usb because of a lacking pcmcia/expresscard is present,
> > there there are
> > logilink ua0099 available, which are offering 8ch output
> > for 23euros
> > i bought some here:
> > http://www.pollin.de/shop/dt/MDUyODcyOTk-/Computer_Informationstechnik/USB
> > _Technik/USB_Konverter/7_1_Kanal_USB_2_0_Soundbox_LogiLink_UA0099.html
> > 
> > 
> > cheers,
> > peter
> > 
> > On 2016-05-06 14:54, patrice colet wrote:
> > > If it's just about having 16 channels DAC, using two C-media CM6206
> > >
> > >soundcards should be enough but you might need direct input boxes if the
> > >amplifiers are not just beside the computer, I tried this chipset and it
> > >works good on a pcduino2 and Pd with 8 channels, no glitches, it should
> > >works as well on a Raspberry Pi 3.  So it's possible to cluster the
> > >soundcard+pi on a network and have as much channels as you need.
> > >
> > >e 06/05/2016 à 14:32, Simon Iten a écrit :
> > >>or get yourself an old rme multiface hdsp card, eight analog outputs and
> > >>eight adat… you will need an old laptop with pcmcia or a new one with
> > >>express card (or a macbook with thunderbolt and an adatper)
> > >>
> > >>rme cards are good quality and quite cheaply secondhand (200 $)
> > >>
> > >>>On 06 May 2016, at 14:08, William Huston <williamahuston at gmail.com>
> > >>>wrote:
> > >>>
> > >>>The Motu is $1000. The Presonus is $500. What about getting 8x
> > >>>2-channel USB soundcards? The Griffin iMic is a 2x2 and is $40. So 8x
> > >>>would be $320.
> > >>>
> > >>>If you look around, you can find 2ch USB audio adapters for $20/each,
> > >>>$10/each, even $2/each. For that kind of money you could purchase a
> > >>>few and evaluate them in terms of quality, or maybe read up on what
> > >>>chip they use and read reviews.
> > >>>
> > >>>I'm pretty sure Pd supports multiple audio adapters, but have not
> > >>>tested this.
> > >>>
> > >>>Please post your results, as I would like to get into ambisonics as
> > >>>well and be able to drive 8x or more speakers. But I don't want to
> > >>>spend $1000!
> > >>>
> > >>>On Thursday, May 5, 2016, Jack <jack at rybn.org> wrote:
> > >>>> Hello,
> > >>>> 
> > >>>> With the following configuration :
> > >>>> Ubuntu 16.04
> > >>>> Pd-0.47.0
> > >>>> 
> > >>>> I need to find a solution to send sounds on 16 different speakers.
> > >>>> What is your advice regarding the purchase of USB sound cards under
> > >>>> Linux with this configuration ? For you, which sound cards are more
> > >>>> willing to do this job ?
> > >>>> 
> > >>>> Ciao.
> > >>>> ++
> > >>>> 
> > >>>> Jack
> > >>>> 
> > >>>> 
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-- 
--
- ao.Univ.Prof. DI Winfried Ritsch 
- ritsch at iem.at - http://iem.at/ritsch
- Institut of Elektronic Music and Acoustics
- University of Music and Dramatic Art Graz
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