[Alsa-user] FW: Clone Audio between onboard card and USB adapter

[Neil S. <swi...@ms...>]

Thanks for that, just tried it out but when using it I don't get any sound at all.. from either device.
I think I understand the config up to where it's specifying pcm.!default but not sure what it's doing after that.
 
When I try to play a wave file using aplay I get;
 
xbmc@Revo-ION:~$ aplay testing.wav
Playing WAVE 'testing.wav' : Signed 16 bit Little Endian, Rate 11025 Hz, Mono
ALSA lib pcm_params.c:2135:(snd1_pcm_hw_refine_slave) Slave PCM not usable
aplay: set_params:957: Broken configuration for this PCM: no configuration available

Is there any other output I can get that could help figure out what's gone wrong?
 
Many Thanks
Neil
 
> Date: Thu, 1 Oct 2009 10:02:25 +0200
> Subject: Re: [Alsa-user] Clone Audio between onboard card and USB adapter
> From: din...@gm...
> To: swi...@ms...
> CC: als...@li...
> 
> 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 <swi...@ms...>:
> > 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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