[alsa-devel] What does 0dB refer to? (Logitech USB Speakers)

Mark Brown broonie at opensource.wolfsonmicro.com
Sun Apr 13 19:48:34 CEST 2008

On Sat, Apr 12, 2008 at 11:16:11PM +0200, Rene Herman wrote:

> Mmm, no, this control seems to be divided into two parts in hardware, with 
> -60 dB to 0 digital attenuation pre DAC and -34.5 to +12 dB analog post DAC. 
> Odd, but anyways... 0 is still the "correct" default.

That's pretty much standard for codec chips, especially those with
multiple output paths or multiple data sources that can be fed into a
given output.

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