Dear all,
Using a TerraTec EWS88MT (ice1712), I want to record simultaneously from
four different stereo sources. Although the break-out box is equipped with
8 analogue inputs, I do not know which devices correspond to the inputs.
Apparently, there are only two capture devices, and it seems to be
impossible to create additional capture devices because /dev/snd is a
symbolic link to /proc/asound.
# ls -l /dev/snd/
total 0
crw-rw-rw- 1 root root 116, 0 Dec 4 15:16 controlC0
crw-rw-rw- 1 root root 116, 8 Dec 4 15:16 midiC0D0
crw-rw-rw- 1 root root 116, 24 Dec 4 15:16 pcmC0D0c
crw-rw-rw- 1 root root 116, 16 Dec 4 15:16 pcmC0D0p
crw-rw-rw- 1 root root 116, 25 Dec 4 15:16 pcmC0D1c
crw-rw-rw- 1 root root 116, 17 Dec 4 15:16 pcmC0D1p
crw-rw-rw- 1 root root 116, 18 Dec 4 15:16 pcmC0D2p
crw-rw-rw- 1 root root 116, 1 Dec 4 15:16 seq
crw-rw-rw- 1 root root 116, 33 Dec 4 15:16 timer
# arecord -l
card 0: 88MT [TerraTec EWS 88MT], device 0: ICE1712 multi [ICE1712 multi]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: 88MT [TerraTec EWS 88MT], device 1: ICE1712 consumer [ICE1712
consumer]
Subdevices: 1/1
Subdevice #0: subdevice #0
So far, I tried to define four PCM devices stereo0, stereo1, stereo2,
stereo3 in /etc/asound.conf (see below), and used commands like
arecord --device="stereo0" -t wav -c 2 -f cd -d 20 test0.wav &
arecord --device="stereo1" -t wav -c 2 -f cd -d 20 test1.wav &
arecord --device="stereo2" -t wav -c 2 -f cd -d 20 test2.wav &
arecord --device="stereo3" -t wav -c 2 -f cd -d 20 test3.wav &
However, the files were not recorded simultaneously but sequentially and
did not contain any audible content. I would be glad about any hints what I
did wrong.
Kind regards,
Ulrich Latzenhofer
-----
This is my /etc/asound.conf:
pcm.ice1712 {
type hw
card 0
}
ctl.ice1712 {
type hw
card 0
}
pcm_slave.stereo {
pcm ice1712
}
pcm.stereo0 {
type plug
slave stereo
route_policy default
ttable.0.0 1
ttable.1.1 1
}
ctl.stereo0 {
type hw
card 0
}
pcm.stereo1 {
type plug
slave stereo
route_policy default
ttable.2.0 1
ttable.3.1 1
}
ctl.stereo1 {
type hw
card 0
}
pcm.stereo2 {
type plug
slave stereo
route_policy default
ttable.4.0 1
ttable.5.1 1
}
ctl.stereo2 {
type hw
card 0
}
pcm.stereo3 {
type plug
slave stereo
route_policy default
ttable.6.0 1
ttable.7.1 1
}
ctl.stereo3 {
type hw
card 0
}
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