yes, I've heard that alsa has the ability to create a single, "virtual sound card" from multiple individual cards, but so far I haven't been able to make this work - I'm interested though, to hear from anyone who has done it. also heard a rumor that new versions of jack may be able to connect to multiple cards at the same time - again, I don't have specific info, but am curious to hear if anyone has done it.
<br><br>to find the post online about wiring the clocks together from multiple sound cards, google: el cheapo howto<br><br>-Dave M.<br><br><div><span class="gmail_quote">On 9/17/07, <b class="gmail_sendername">Tim Blechmann
</b> <<a href="mailto:tim@klingt.org">tim@klingt.org</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">actually, i have never done it, but wouldn't you have to link the clocks
<br>of both audio devices in order to avoid timing problems?<br><br>wini one told me that one can combine devices with alsa, which includes<br>some code, that actually synchronizes multiple audio-devices by<br>software, which includes resampling in order to avoid timing
<br>problems ...<br>iirc, pd doesn't include such error correction, so it might be a source<br>of unwanted audio dropouts ...<br><br>best, tim<br><br>On Mon, 2007-09-17 at 09:06 -0400, David Merrill wrote:<br>> I have only done this in Linux, but here are some thoughts:
<br>><br>> - are your device numbers *really* 2 and 13? In my experience, they<br>> start at 1, and are numbered sequentially, meaning that you'd have to<br>> have a lot of sound cards in your system to get all the way up to 13.
<br>> - when you list channels, you typically give a number of channels for<br>> each sound device that you're using, and I always list in and out<br>> separately, as in:<br>><br>> -audiodev 1,2 -inchannels 2,2 -outchannels 2,2
<br>> (meaning that I'm using devices 1 and 2, and each one has 2 ins and 2<br>> outs)<br>> -David M.<br>><br>> On 9/16/07, Joćo Miguel Pais <<a href="mailto:jmmmpais@googlemail.com">jmmmpais@googlemail.com
</a>> wrote:<br>> Hi,<br>><br>> I wanted to use two soundcards for input, my built-in stereo<br>> soundmax and<br>> an rme multiface (for output only the rme). I tried the
<br>> following<br>> parameters,<br>><br>> asio<br>> audioindev 2,13 (2 is soundmax, 13 the rme)<br>> audiooutdev 12<br>> channels 18<br>> audiobuf 40
<br>><br>> but it didn't work, only one device was taken by pd, the rme.<br>> Is it<br>> possible in windows to have 2 different soundcards working?<br>><br>><br>> Thank you,
<br>><br>> Joćo Miguel Pais<br>><br>> --<br>> Friedenstr. 58<br>> 10249 Berlin<br>> Deutschland<br>> Tel +49 30 42020091<br>> Mob +49 162 6843570
<br>> <a href="mailto:jmmmpais@googlemail.com">jmmmpais@googlemail.com</a><br>> skype: jmmmpjmmmp<br>> <a href="http://www.puredata.org/Members/jmmmp">http://www.puredata.org/Members/jmmmp
</a><br>> IBM Thinkpad R51, XP, Pd-Ext-0.39-2-t5<br>><br>> _______________________________________________<br>> PD-dev mailing list<br>> <a href="mailto:PD-dev@iem.at">PD-dev@iem.at
</a><br>> <a href="http://lists.puredata.info/listinfo/pd-dev">http://lists.puredata.info/listinfo/pd-dev</a><br>><br>><br>><br>> --<br>> MIT Media Lab<br>> <a href="mailto:dmerrill@media.mit.edu">
dmerrill@media.mit.edu</a><br>> <a href="http://web.media.mit.edu/~dmerrill/">http://web.media.mit.edu/~dmerrill/</a><br>> _______________________________________________<br>> PD-dev mailing list<br>> <a href="mailto:PD-dev@iem.at">
PD-dev@iem.at</a><br>> <a href="http://lists.puredata.info/listinfo/pd-dev">http://lists.puredata.info/listinfo/pd-dev</a><br>--<br><a href="mailto:tim@klingt.org">tim@klingt.org</a> ICQ: 96771783<br><a href="http://tim.klingt.org">
http://tim.klingt.org</a><br><br>Nothing exists until or unless it is observed. An artist is making<br>something exist by observing it. And his hope for other people is that<br>they will also make it exist by observing it. I call it 'creative
<br>observation.' Creative viewing.<br> William S. Burroughs<br><br></blockquote></div><br><br clear="all"><br>-- <br>MIT Media Lab<br><a href="mailto:dmerrill@media.mit.edu">dmerrill@media.mit.edu</a><br><a href="http://web.media.mit.edu/~dmerrill/">
http://web.media.mit.edu/~dmerrill/</a>