I would like to record multiple USB inputs, but it does not work.
The psudo device does not show up in the audio inputs of audacity and others.
my config:
# create a virtual four-channel device with two sound devices:
# This is in fact two interleaved stereo streams in
# different memory locations, so JACK will complain that it
# cannot get mmap-based access. see below.
pcm.multi {
type multi;
slaves.a.pcm "hw:1,0";
slaves.a.channels 2;
slaves.b.pcm "hw:2,0";
slaves.b.channels 2;
bindings.0.slave a;
bindings.0.channel 0;
bindings.1.slave a;
bindings.1.channel 1;
bindings.2.slave b;
bindings.2.channel 0;
bindings.3.slave b;
bindings.3.channel 1;
}
# JACK will be unhappy if there is no mixer to talk to, so we set
# this to card 0. This could be any device but 0 is easy.
ctl.multi {
type hw;
card 0;
}
# This creates a 4 channel interleaved pcm stream based on
# the multi device. JACK will work with this one.
pcm.ttable {
type route;
slave.pcm "multi";
slave.channels 4;
ttable.0.0 1;
ttable.1.1 1;
ttable.2.2 1;
ttable.3.3 1;
}
# see above.
ctl.ttable {
type hw;
card 0;
}
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