[PD] Multiple audio outputs on a single-board computer ?

[Pierre Massat]

Thank you all for your replies. I didn't even know surround soundcards
existed. This looks promising given my budget.
In the meantime I found this :
https://shop.audioinjector.net/detail/Sound_Cards/Octo+RCA+sound+card
Anybody has experience using it with Pd ?

Cheers,

Pierre.

2021-03-17 17:53 UTC+01:00, Lorenzo Sutton <lorenzofsutton at gmail.com>:
> On 17/03/21 07:42, Pierre Massat wrote:
>> Dear all,
>>
>> I haven't posted anything on this list in years.
>> I'm trying to build a system to play several sound files in a loop,
>> each around 2 minutes in length, all at the same time. By "several" I
>> mean 10 to 15 different files. While I'd have no problem making a Pd
>> patch to achieve this, I have no idea what hardware I could use. I
>> have a limited budget, and I was planning on running Pd on a Raspberry
>> Pi (or similar single-board computer).
>>
>> Is there any cheap way of outputing than many channels from a single
>> (a couple of) RPi ?
>
> How many are 'many' :-)
>
> If it's <= 8 channels and you don't care (too much) about latency you
> could check out a cheap '7.1' USB card (these can cost less than 30 euro
> online) and if it exposes 8 writable inputs via jack that could work.
> The physical outputs of these are, of course, unbalanced and in couples
> so you'd need to do some cable splitting and then maybe have a mixer
> nearby...
> I never did this on the RPi but I _did_ something similar with a cheap
> 5.1 usb sound blaster hooked to a laptop in the past.
> I'm assuming, of course that each file would 'consume' just 1 channel...
>
> YMMV.
>
> If you want more than 8 output channels it will be hard to stay 'cheap'
> (which of course depends on 'how much' is your limited budget), and then
> - of course - you need to check linux compatibility (i.e. if they are
> 'class compliant'...)
>
> My two cents,
>
> Lorenzo.
>
>
>
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