Re: Everything You Could Ever Need to Know About ALSA - ALSA docs

[Lee Revell <rlrevell@joe-job.com>]

On Sun, 2006-05-14 at 15:45 +0200, Patrick Strasser wrote:
> What is this thing about the device?
> 
> First the most important question:
> I know for now that in a standard configuration "hw:0,0" is quite
> fine. 
> For the second card "hw:1,0" is hopefully working. What exactly does 
> that mean?
> Sometimes I see "plughw:0,0". What's the difference to "hw:0,0"?
> How can I find out which device strings are valid (except for
> guessing?)
> 

Not quite, you should just use "default" (or "default:0" for the first
card, "default:1" for the second).  Only use hw:x if you know what you
are doing.

Really, you should not have to know this - the app should have a drop
down menu to select the device.

This page explains the varous devices:

http://www.alsa-project.org/alsa-doc/alsa-lib/pcm_plugins.html

> Next: How can I find out which device is the device my speakers are 
> connected to?
> 

You can't.  Speaker jacks don't normally support this.  You just have to
select the various devices in your app and see which one gives you
sound.  It's no different from any other OS.

Lee



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