[PD-dev] audioindev with several devices

[Tim Blechmann]

actually, i have never done it, but wouldn't you have to link the clocks
of both audio devices in order to avoid timing problems?

wini one told me that one can combine devices with alsa, which includes
some code, that actually synchronizes multiple audio-devices by
software, which includes resampling in order to avoid timing
problems ... 
iirc, pd doesn't include such error correction, so it might be a source
of unwanted audio dropouts ...

best, tim

On Mon, 2007-09-17 at 09:06 -0400, David Merrill wrote:
> I have only done this in Linux, but here are some thoughts:
> 
>  - are your device numbers *really* 2 and 13? In my experience, they
> start at 1, and are numbered sequentially, meaning that you'd have to
> have a lot of sound cards in your system to get all the way up to 13. 
>  - when you list channels, you typically give a number of channels for
> each sound device that you're using, and I always list in and out
> separately, as in:
> 
> -audiodev 1,2 -inchannels 2,2 -outchannels 2,2
> (meaning that I'm using devices 1 and 2, and each one has 2 ins and 2
> outs)
> -David M.
> 
> On 9/16/07, João Miguel Pais <jmmmpais at googlemail.com> wrote:
>         Hi,
>         
>         I wanted to use two soundcards for input, my built-in stereo
>         soundmax and 
>         an rme multiface (for output only the rme). I tried the
>         following
>         parameters,
>         
>         asio
>         audioindev 2,13 (2 is soundmax, 13 the rme)
>         audiooutdev 12
>         channels 18
>         audiobuf 40
>         
>         but it didn't work, only one device was taken by pd, the rme.
>         Is it 
>         possible in windows to have 2 different soundcards working?
>         
>         
>         Thank you,
>         
>         João Miguel Pais
>         
>         --
>         Friedenstr. 58
>         10249 Berlin
>         Deutschland
>         Tel +49 30 42020091
>         Mob +49 162 6843570
>         jmmmpais at googlemail.com
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>         http://www.puredata.org/Members/jmmmp
>         IBM Thinkpad R51, XP, Pd-Ext-0.39-2-t5
>         
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> 
> 
> -- 
> MIT Media Lab
> dmerrill at media.mit.edu
> http://web.media.mit.edu/~dmerrill/ 
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