[alsa-devel] [BUG] Bad decibel data on C-Media USB sound card

Allen M. ase1592 at gmail.com
Fri Oct 3 17:48:56 CEST 2014


Raymond Yau wrote:

>Did you use mono or stereo in playback and capture?

mono


>Did your capture volume /boost set to 0dB?

yes


>Do your sound card support the sampling rate ?

Yes


>Refer to the datasheet and your alsamixertest result , the card seem not
>has fixed gain for each step

http://www.steila.com/USB4IO/CMedia/CM119.pdf
Card is using C-Media CM119.
Datasheet seems to show 38 volume control steps?
Should the steps be 38 instead of 151? Or are these values unrelated?


>Are you using version 48.11?

Yes


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