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@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@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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