Subject: [ecasound] problems with the loop device and changing formats
From: Jeremy Hall (jhall_AT_uu.net)
Date: Tue Oct 30 2001 - 14:08:12 EET
WOW NOW WHAT!
I install new CVS and alsa support is gone somehow!
well I will tell you about my problems with CVS of a couple days ago.
I tried the following chain setup file
# ecasound chainsetup file
-b:64 -r:50 -z:intbuf -z:nodb -sr:48000 -n:one-hope-2 -X -z:noxruns -z:psr -t:316
# audio inputs
-a:1 -f:f32_le,1,48000 -i:audio2.wav,
-a:2 -f:f32_le,1,48000 -i:audio3.wav,
-a:3 -f:f32_le,1,48000 -i:audio4.wav,
-a:4 -f:f32_le,2,48000 -i:loop,1
-a:5 -f:f32_le,2,48000 -i:loop,2
# audio outputs
-a:2,3 -f:f32_le,2,48000 -o:loop,2
-a:1 -f:f32_le,2,48000 -o:loop,1
-a:4,5 -f:s16_le,2,48000 -o:alsa,dsp1
# chain operators and controllers
-a:3 -^erc$:1.00,2.00 -^epp$:100.00
-a:4 -el:freeverb3,0.00,0.90,0.80,0.08,0.50,1.00 -^ea$:55.00
now when I start this, it produces noise! I have determined it is the
freeverb's that is doing the noise. I first have to start ecasound
rolling, THEN add them. When I start ecasound rolling, I get a burst of
noise, probably because the loop devices aren't initialized properly, then
I get recognizable sound...but only out of the left channel.
if I put all that crap on the command line and output to alsa,dsp1, all is
lovely (minus the freeverb of course) and then if I try to write to a wav
file, not only does the wav file run off the end of the session, but it
sounds quite dithered or processed, as if the wrong sample rate was used
I also noticed, to my shock and amazement, that when converting to the
loop devices it wanted to ocnvert to s16_le,2,44100. I did not wish this.
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