Jiang Jiang (HangZhou) wrote:
> I find that I can use alsamixer to adjust the volumn of line
> input. But how can I set the volumn of line input by program?

See the source of the amixer utility.

> And how to capture data from line input?

See the source of the arecord utility.

> What's more, where can I find the explaniation of every item which
> alsamixer lists ?

The items in alsamixer depend on the hardware.  What sound card do you
have?


HTH
Clemens




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