1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:
28:
29:
30:
31:
32:
33:

# device used for mono output
# string, default: default
audio.device.alsa_default_device:up1to51

# device used for stereo output
# string, default: plug:front:default
audio.device.alsa_front_device:up2to51

# alsa mixer device
# string, default: PCM
#audio.device.alsa_mixer_name:PCM

# sound card can do mmap
# bool, default: 0
#audio.device.alsa_mmap_enable:0

# device used for 5.1-channel output
# string, default: iec958:AES0=0x6,AES1=0x82,AES2=0x0,AES3=0x2
audio.device.alsa_passthrough_device:iec958:CARD=SB,DEV=0

# device used for 4-channel output
# string, default: plug:surround40:0
#audio.device.alsa_surround40_device:plug:surround40:0

# device used for 5.1-channel output
# string, default: plug:surround51:0
audio.device.alsa_surround51_device:surround51:CARD=SB,DEV=0

# speaker arrangement
# { Mono 1.0  Stereo 2.0  Headphones 2.0  Stereo 2.1  Surround 3.0  Surround 4.0  Surround 4.1  Surround 5.0  Surround 5.1  Surround 6.0  Surround 6.1  Surround 7.1  Pass Through }, default: 1
audio.output.speaker_arrangement:Surround 5.1

1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
24:
25:
26:
27:

pcm.up2to51 {
    type route
    slave.pcm surround51
    slave.channels 6
    ttable.0.0 0.6
    ttable.1.1 0.6
    ttable.0.2 0.6
    ttable.1.3 0.6
    ttable.0.4 0.3
    ttable.1.4 0.3
    ttable.0.5 0.3
    ttable.1.5 0.3
}

pcm.up1to51 {
    type route
    slave.pcm surround51
    slave.channels 6
    ttable.0.0 0.6
    ttable.0.1 0.6
    ttable.0.2 0.6
    ttable.0.3 0.6
    ttable.0.4 0.6
    ttable.0.5 0.6
}