no sound with software mixer

[Luckyman7471]

Hello,

I am using a software audio mixer and would like to use it as an output device in Twinkle

However, I get the following error:

Critical: Opening ALSA driver failed: snd_pcm_hw_params_set_rate(8000) failed: Invalid argument

Is there a way to play the audio through the software mixer as well?

Here is my Alsa config:

`

the real device

pcm.realdev {
type hw
card 0
device 0
}

software mixing

pcm.dmixer {
type dmix
ipc_key 3129397
ipc_key_add_uid false
ipc_perm 0666
slave.pcm "realdev"
slave {
#period_time 0
#period_size 1024
#buffer_size 8192
# we're enforcing 44100, since thats what most apps use
#rate 8000
}
bindings {
0 0
1 1
}
}

software volume

pcm.softvol {
type softvol
slave.pcm "dmixer"
control {
name "Software"
card 0
}
}
pcm.mpdvol {
type softvol
slave.pcm "dmixer"
control {
name "MPD"
card 0
}
}

input

pcm.input {
type dsnoop
ipc_key 3129398
ipc_key_add_uid false
ipc_perm 0660
slave.pcm "realdev"
}

duplex device

pcm.duplex {
type asym
playback.pcm "softvol"
capture.pcm "input"
}

default devices

pcm.!default {
type plug
slave.pcm "duplex"
}
pcm.dsp0 {
type plug
slave.pcm "duplex"
}
`

[fbriere]

Critical: Opening ALSA driver failed: snd_pcm_hw_params_set_rate(8000) failed: Invalid argument

This means that Twinkle tried (and failed) to open the sound device with a 8000 Hz sampling rate. Twinkle does not resample, so when using a narrowband codec (i.e. most of them), it opens the device at that rate.

# we're enforcing 44100, since thats what most apps use
#rate 8000

If a rate of 44100 is enforced, that's the cause of your problem right there. Have you tried uncommenting this directive, setting it at 8000?