On Wed, Jul 21, 2010 at 02:24:09AM +0200, rom wrote:

> I'd like to ask some advice about a small multitrack recorder program i
> wrote, and have been using for some time. Basically, what it does is to:
> - simultaneously capture sound from several consumer-grade soundcards.
> - use libsamplerate to stretch the audio streams, re-syncing them to the
> one chosen as "master". The stretch ratio is continuously re-calculated
> to make the overall frame count of the stretched stream match the
> overall frame count of the master.
> - write the "corrected" streams plus the "master" stream to parallel
> .wav files using libsndfile.

You basically reinvented jackd with additional alsa_in and jack_capture
or whatever recording tool (ardour?) a user intends to use.

Just a quick walk-through:

   $ jackd -d alsa -d hw:0  --> fire up jackd on first card
   $ alsa_in -d hw:1 --> add second card
   $ alsa_in -d hw:2 --> add third card a.s.o.

Then, use any jack capture client you want, including jackrec,
jack_capture and ardour, just to name a few.


HTH

-- 
mail: a...@thur.de      http://adi.thur.de      PGP/GPG: key via keyserver
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