[LAD] Trying to understand mixer in ALSA API

[Paul Davis]

On Fri, Aug 31, 2012 at 8:39 AM, Alexandre <alexduthil at gmail.com> wrote:

> Hi
>
> Kinda new to linux audio and still a bit new to dev generally and I'm
> trying to understand the basis of linux audio.
>
> By that, I mean the ALSA API :
> I would like to use the PCM interface and the mixer interface to mix 2
> sounds


the mixer interface does not do that. its an API to control the hardware
mixer (if any) present in the audio interface hardware. a lot of current
audio interface hardware is incapable of mixing sound from multiple
sources, so this is generally done in software.
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