Re: Clone Audio between onboard card and USB adapter

[Dino Puller <dino.puller@xxxxxxxxx>]

Try this configuration:

pcm.multi {
   type multi
   slaves.a.pcm "dmix:0,0" # main sound card
   slaves.a.channels 2
   slaves.b.pcm "dmix:1,0" # usb sound card
   slaves.b.channels 2
   bindings.0.slave a
   bindings.0.channel 0
   bindings.1.slave a
   bindings.1.channel 1
   bindings.2.slave b
   bindings.2.channel 0
   bindings.3.slave b
   bindings.3.channel 1
}

pcm.hdaloop_out {
        type route
        slave.pcm "multi"
        slave.channels 4
        ttable.0.0 1
        ttable.1.1 1
        ttable.0.2 1
        ttable.1.3 1
}

pcm.!default {
    type asym
    playback.pcm {
        type plug
        slave.pcm "hdaloop_out"            	
    }
    capture.pcm {
        type plug
	slave.pcm "dsnoop:0,0"
    }
}

2009/10/1 Neil Sutton <swift_gti@xxxxxxx>:
> Hi All,
>
> I'm currently trying to setup Alsa so that it clones all the audio sent to
> my default soundcard (just bog standard onboard connected via headphone
> jack) and duplicates the output to a USB soundcard.
>
> I checked out the documentation for the asoundrc config but it's not making
> too much sense, the 'copy' plugin example seems way more complex than what
> i'm looking for.
>
> Currently I've got this, but i'm only getting audio output from the default
> onboard card..
>
>
> pcm.!default {
>         type plug
>         slave.pcm "dup"
> }
> pcm.dup {
>         type copy
>         slave.pcm "hw:0,0"
>         slave.pcm "hw:1,0"
> }
>
> Here is the output of aplay -l (the first device is my default, the last is
> the one I want to clone to)
>
>
> **** List of PLAYBACK Hardware Devices ****
> card 0: NVidia [HDA NVidia], device 0: ALC662 Analog [ALC662 Analog]
>   Subdevices: 0/1
>   Subdevice #0: subdevice #0
> card 0: NVidia [HDA NVidia], device 3: NVIDIA HDMI [NVIDIA HDMI]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> card 1: Audio [USB Audio], device 0: USB Audio [USB Audio]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
>
> Can anyone spot where I've gone wrong ?
>
> Many Thanks!
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