Thomas Hood wrote: > On 7/26/06, Thomas Hood <[EMAIL PROTECTED]> wrote: > >> On 7/26/06, James Courtier-Dutton <[EMAIL PROTECTED]> wrote: >> >>> Take a look at the alc850 datasheet, it will tell you the dB gain range >>> each control has. >>> > > > Hmm.. As far as I can tell from the datasheet ( > ftp://61.56.86.122/pc/ac97/alc850/ALC850_DataSheet_1.4.pdf ) the > volume controls are in two places: > > The dacs: 4-bit > 00h +12db > 08h 0db > 1fh -34.5db > > followed by the master volume controls: > 4 bit: > 00h 0db > 1fh -45db > > So that might explain it. Is there an easy translation between 08 and > a percentage? 8/32 = 25% or 75% > > Thanks, > > Tom >
You can use amixer to be 100% accurate, but the values in alsamixer will be: (31 - register_value) * 100 / 31 So, register value 0 -> 100% register value 8 -> 74% register value 1fh -> 0% So, for 0dB, a setting of about 75% will be right. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
