---

at /etc/asound.conf 
defaults.pcm.rate_converter "linear"

pcm.dmix_48000{
type dmix
ipc_key 5678293
ipc_key_add_uid yes
slave{
pcm "hw:0,0"
period_time 40000
format S16_LE
rate 48000
}
}

pcm.dmix_44100{
type dmix
ipc_key 5678293
ipc_key_add_uid yes
slave{
pcm "hw:0,0"
period_time 40000
format S16_LE
rate 44100
}
}

pcm.dmix_32000{
type dmix
ipc_key 5678293
ipc_key_add_uid yes
slave{
pcm "hw:0,0"
period_time 40000
format S16_LE
rate 32000
}
}

pcm.dmix_24000{
type dmix
ipc_key 5678293
ipc_key_add_uid yes
slave{
pcm "hw:0,0"
period_time 40000
format S16_LE
rate 24000
}
}

pcm.dmix_22050{
type dmix
ipc_key 5678293
ipc_key_add_uid yes
slave{
pcm "hw:0,0"
period_time 40000
format S16_LE
rate 22050
}
}

pcm.dmix_16000{
type dmix
ipc_key 5678293
ipc_key_add_uid yes
slave{
pcm "hw:0,0"
period_time 40000
format S16_LE
rate 16000
}
}

pcm.dmix_12000{
type dmix
ipc_key 5678293
ipc_key_add_uid yes
slave{
pcm "hw:0,0"
period_time 40000
format S16_LE
rate 12000
}
}

pcm.dmix_11025{
type dmix
ipc_key 5678293
ipc_key_add_uid yes
slave{
pcm "hw:0,0"
period_time 40000
format S16_LE
rate 11025
}
}

pcm.dmix_8000{
type dmix
ipc_key 5678293
ipc_key_add_uid yes
slave{
pcm "hw:0,0"
period_time 40000
format S16_LE
rate 8000
}
}

pcm.!dsnoop_48000{
type dsnoop
ipc_key 5778293
ipc_key_add_uid yes
slave{
pcm "hw:0,0"
period_time 40000
format S16_LE
rate 48000
}
}

pcm.!dsnoop_44100{
type dsnoop
ipc_key 5778293
ipc_key_add_uid yes
slave{
pcm "hw:0,0"
period_time 40000
format S16_LE
rate 44100
}
}

pcm.!dsnoop_32000{
type dsnoop
ipc_key 5778293
ipc_key_add_uid yes
slave{
pcm "hw:0,0"
period_time 40000
format S16_LE
rate 32000
}
}

pcm.!dsnoop_24000{
type dsnoop
ipc_key 5778293
ipc_key_add_uid yes
slave{
pcm "hw:0,0"
period_time 40000
format S16_LE
rate 24000
}
}

pcm.!dsnoop_22050{
type dsnoop
ipc_key 5778293
ipc_key_add_uid yes
slave{
pcm "hw:0,0"
period_time 40000
format S16_LE
rate 22050
}
}

pcm.!dsnoop_16000{
type dsnoop
ipc_key 5778293
ipc_key_add_uid yes
slave{
pcm "hw:0,0"
period_time 40000
format S16_LE
rate 16000
}
}

pcm.!dsnoop_12000{
type dsnoop
ipc_key 5778293
ipc_key_add_uid yes
slave{
pcm "hw:0,0"
period_time 40000
format S16_LE
rate 12000
}
}

pcm.!dsnoop_11025{
type dsnoop
ipc_key 5778293
ipc_key_add_uid yes
slave{
pcm "hw:0,0"
period_time 40000
format S16_LE
rate 11025
}
}

pcm.!dsnoop_8000{
type dsnoop
ipc_key 5778293
ipc_key_add_uid yes
slave{
pcm "hw:0,0"
period_time 40000
format S16_LE
rate 8000
}
}

pcm.asymed{
type asym
playback.pcm "dmix_48000"
capture.pcm "dsnoop_48000"
}

pcm.dsp0{
type plug
slave.pcm "asymed"
}

pcm.!default{
type plug
route_policy "average"
slave.pcm "asymed"
}

ctl.!default{
type hw
card 0
}

ctl.mixer0{
type hw
card 0
}

pcm_slave.esai{
        pcm "hw:0,0"
        channels 8
        rate 48000
        period_time 40000
}

pcm.esaich1to6{
        type dshare
        ipc_key 5778293
        slave esai
        bindings.0 0
        bindings.1 4
        bindings.2 1
        bindings.3 5
        bindings.4 2
        bindings.5 6
}

pcm.esaich78{
        type dshare
        ipc_key 5778293
        slave esai
        bindings.0 3
        bindings.1 7
}

могу как-то дописать существующий файл? чтобы не поломать остальную логику?