Re: [LAD] Calibrating sound cards

On Mon, Apr 14, 2008 at 5:15 PM, James Courtier-Dutton
<James@email-addr-hidden> wrote:
> Hi,
>
> Is there a recognized method for calibrating a sound card?
> e.g.
>
> For Playback, one sends a sample .wav PCM file to the sound card, then
> measure the analog output from the line-out.
>
> If the sound card itself provides 0dB of Gain, what should be the
> measured figure?
>
> Can this be done with a simple AC volt meter?
>
> There seems to be some debate, with regards to ALSA, as to whether the
> line-out is at the correct level if one sets all the ALSA mixer controls
> to 0dB.

Wouldn't this require developer access to every single device we
support? With HDA intel this would mean every make and model of
laptop and motherboard on the market.

Lee
_______________________________________________
Linux-audio-dev mailing list
Linux-audio-dev@email-addr-hidden
http://lists.linuxaudio.org/mailman/listinfo/linux-audio-dev
Received on Tue Apr 15 04:15:02 2008