Hi, I'm trying to do a very similar thing but modulating the audio from a file. I want to produce a stereo tremolo by using the sine amod effect, out of phase on the left and right channels.
LEN=0
OFFSET=0
PHASE=0
PHASE2=180
The following works for mono, producing the desired tremolo in mono: sox rd73_064__E4_082.flac x.flac synth $LEN $OFFSET $PHASE 2 sine amod 0.5
I thought the following would work for stereo: sox rd73_064__E4_082.flac x.flac synth $LEN $OFFSET $PHASE2 2 sine amod
$LEN $OFFSET $PHASE2
but I get a parameter error. Any suggestions?
Thanks!