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

[Mark Knecht]

No responses here also?????

> -----Original Message-----
> From: linux-audio-user-admin at music.columbia.edu
> [mailto:linux-audio-user-admin at music.columbia.edu]On Behalf Of Mark
> Knecht
> Sent: Friday, July 25, 2003 7:42 AM
> To: Linux-Audio-User
> Subject: [linux-audio-user] aplay, plughw, alsamixer question
>
>
> Hi,
>    Hi. I asked this question on Alsa-Dev yesterday, but 17 hours later got
> no answers. Excuse me to those that subscribe to both lists.
>
>    This info is to help me do more debug work on a new HDSP 9652 driver
> version that I am helping to test.
>
>    Should the volume levels I hear when using the command
>
> aplay -Dplughw:0 -r 44100 data/wave/seque~10.wav
>
> be controlled by alsamixer?
>
> The volumes for alsaplayer are being controlled by alsamixer, but
> this aplay
> command is not, at least right now on a new driver I'm using.
>
>    Also, on a multichannel card, how do I direct the above aplay
> command to
> a specific channel? I am finding that with this new driver the audio is
> appearing on ALL channels on the card, even for a mono wave file. I think
> this is a bug, but I'm not sure.
>
>    If there's an explanation fit for a simpleton like me about the
> difference between plughw and hw and when to use one vs. the other, please
> point me there so I can learn. I have read a bit on the Alsa site about
> plughw talking directly to the kernel, but beyond that I have not
> discovered
> any documentation yet.
>
>    Thanks in advance.
>
> Cheers,
> Mark
>
>
>