[Please don't drop Cc to alsa-devel ML]

At Thu, 13 Aug 2009 11:27:29 +0300, Mantas Pilipavičius wrote:

So I can play a sound with this command: speaker-test -Dhw:0,0 -c2 -twav

I edit my asound.rc: nano -w ~/.asoundrc and nano -w /etc/asound.conf

With this:

pcm.softvol {     type            softvol     slave {         pcm         "hw:0,0"     }     control {         name        "Garsas"         card        0     } }

And the I try:

speaker-test -Dsoftwol -c2 -twav

And it doesn't work.

Elaborate what doesn't work how.

Sorry to disturb you and consume your precious time, but I am new to open source and really need this.

What about if you run without -Dxxx option? Usually PCM volume should be created as a softvol if not exists.

Takashi

On Thu, Aug 13, 2009 at 11:14 AM, Takashi Iwai tiwai@suse.de wrote:

At Thu, 13 Aug 2009 10:55:38 +0300,
Mantas Pilipavičius wrote:
>
> Can you explain more detailed? What is data manipulation?

You need to change all the stream data multiplying the volume
gain/attenuation in software because you hardware gives no volume
control by itself.

In the case of alsa-lib, it's softvol plugin.  Or, if you use PA,
PA does it automatically.

Takashi

> On Thu, Aug 13, 2009 at 8:41 AM, Takashi Iwai <tiwai@suse.de> wrote:
>
>     At Thu, 13 Aug 2009 00:39:48 +0300,
>     Mantas Pilipavičius wrote:
>     >
>     > http://www.alsa-project.org/db/?f=
>     afa01dd48ed59d895d18407af62dbd1fa138686c
>     > Everything works great, I can play the sound, but PCM and Master
>     channels
>     > don't work, so I can't increase or decrease volume. Only thing I
can do
>     is
>     > mute/unmute PCM channel
>
>     This hardware has no volume control indeed.
>     The volume has to be adjusted in software by data manipulation.
>
>     Takashi
>
>