Subject: [ecasound] loopback in action! (fwd)
From: Kai Vehmanen (firstname.lastname@example.org)
Date: Tue Aug 31 1999 - 11:39:19 EEST
ALSA kicks ass! :) Seriously, I'm currently writing a ALSA plugin
for Michael Krause's soundtracker. It's still in early beta (output
only, scopes aren't working, etc), but simple module playback works
nicely. Anyway, I decided to finally do some real testing with ALSA
pcm-loopback and it proved to work amazingly well...
First, configured sountracker to use ALSA card 0 and device 0. Then
started playing some mod file and on to another console...:
ecasound -i alsalb,0,0 -o alsa,1,0 -etr:40,0,60
A reverbed version of the module comes from my speakers! :) And...
ecasound -i alsalb,0,0 -o alsa,1,0 -efl:2000 -kos:1,200,4000,0.2
A lowpass filtered version with a 0.2Hz sine oscillator controlling
the filter cutoff! Don't know how useful this is, but this sure put
a big smile on my face. ;)
Software versions used were ALSA 0.4.0, SoundTracker 0.3.1 (w/ patched
ALSA support) and ecasound 1.5.6r5.
PS The biggest problem was that if I tried to capture output from
my AWE64G, the capturing program sometimes exited with a
"Interrupted system call" error...
-- Kai Vehmanen ----------------------------- CS, University of Turku, Finland : email mailto:email@example.com : audio processing for linux http://www.wakkanet.fi/ecasound/ : my music (ambient-idm-rock-...mp3/ra) http://www.wakkanet.fi/sculpscape/
This archive was generated by hypermail 2a24 : Thu Sep 23 1999 - 15:32:19 EEST