Miscellany

#Define the soundcard to use
pcm.snd_card {
type hw
card 0
device 0
}




# 6 channel dmix - output whatever audio, to all 6 speakers
pcm.!surround51 {
type dmix
ipc_key 1024
ipc_key_add_uid false
ipc_perm 0660
slave {
pcm "snd_card"
rate 48000
channels 6
period_time 0
period_size 1024
buffer_time 0
buffer_size 4096
}

# Some cards, like the "nforce" variants require the following to be uncommented. It routes the audio to the correct speakers.
bindings {
 0 0
 1 1
 2 4
 3 5
 4 2
 5 3
 }

}

# upmixing - duplicate stereo data to all 6 channels
pcm.ch51dup {
type route
slave.pcm surround51
slave.channels 6
ttable.0.0 1
ttable.1.1 1
ttable.0.2 1
ttable.1.3 1
ttable.0.4 0.5
ttable.1.4 0.5
ttable.0.5 0.5
ttable.1.5 0.5
}


# 'full-duplex' device for use with aoss
pcm.duplex {
type asym
playback.pcm "ch51dup"
capture.pcm "hw:0"
}

# change default device:
pcm.!default {
type softvol
slave.pcm "duplex"
control {
name "Software Master"
card 0
}
}

# for aoss
pcm.dsp "duplex"

pcm.dsp1 "duplex"