[linux-audio-user] aplay, plughw, alsamixer question

[Mark Knecht]

On Fri, 2003-07-25 at 20:28, fpirrone wrote:
> Mark,
> 
> I don't have any experiences with your hardware and didn't think my 
> reply would be of much use to you, but running the exact command you 
> post on my cs4236 system produces sound that is under control of 
> alsamixer, as does -Dhw:0, so that suggests to me that aplay is directly 
> affected by the settings in the mixer.  

Frank,
   Actually, your results are extremely helpful. Now I know this is a
bug which is a step forward. Thanks.

   My hardware (HDSP 9652) is currently unsupported, but we are trying
to get it to work. I just needed verification that the command worked
the way you say. I suspected it did.

> 
> Now, some cards do not have a mixer so they should not behave this way, 
> as I assume would be the case if there were something wrong with the 
> driver for a card that does have a mixer.  In either event I would not 
> expect to see controls in amixer or the gamix graphical interface.  If 
> you see them and they have no effect that sounds like a malfunction.
> 
> Couldn't find any answer to your channel question.  My system does not 
> seem to provide a relevant option to explore this further.  I fooled 
> around with -c and -I options but could draw no useful conclusions.

  May I ask what hardware you are using, and if you attempted to use (or
could you try out?) both mono and stereo wave files? I am curious
whether for you a mono wave file would be played on all channels, as my
driver is currently doing, or just channel 1, and whether a stereo file
is played as mono or in stereo.

   Anyway, your response was exactly what I was hoping for. Thanks much
for verifying this.

Cheers,
Mark