Hi
Thank you for the reply.
What I would like to happen is that the reference device is added to all USB devices.
As it is right now we open the devices using the "hw:x" form - not using any of the logical names like default or front, etc. But that can be changed if that is what is required to make this work.
I think that your questions actually made me realise my issue here. I was trying to apply my softvol control to "every" instance of an audio device and expecting it to "automagically" be available on every hw:x device.
But if I am not mistaken - just opening calibrate:x instead, using the config I sent in the previous mail (mostly) could actually solve my problem.
Now if I would like the softvol control to appear automatically on all USB devices ("hw:x") - no matter the vendor or name. Is that possible to do in /etc/asound.conf or would that require modification of the files in /usr/share/alsa/cards director?
Med venlig hilsen/ Best Regards
Lau Bakman
Systems Engineer
Business Area Security & Defence Solutions
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-----Original Message-----
From: Clemens Ladisch [mailto:cladisch@xxxxxxxxxxxxxx]
Sent: 26. november 2013 17:20
To: Bakman Lau; alsa-user@xxxxxxxxxxxxxxxxxxxxx
Subject: Re: Trying to add an softvol control to all USB devices
Bakman Lau wrote:
> pcm.reference {
> @args [ CARD ]
> @args.CARD {
> type string
> }
With a "default" entry, the "reference" device expects a card number or ID.
> type softvol
> slave.pcm {
> type hw
> card $CARD
> subdevice 0
> }
> control {
> name "Reference"
> card $CARD
> }
> }
>
> pcm.!default {
> type plug
> slave.pcm "reference"
> }
But you don't provide one.
What are the device names that your software will use?
Regards,
Clemens
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