On Sat, 4 Feb 2012, Clemens Ladisch wrote: > Abby Cedar wrote: >> Is the 0-100% scale linear from -60 dB to 0dB? > > Before alsamixer 1.0.24, it was. Since then, the slider position is > proportional with the cubic root of the peak amplitude. Why the cube root? Why not the log, which is what dB is? and which is what many potentiometers at least approximate? > >>>> Is there a way to mute only one channel on Aux? What about Master Front? >>> >>> The hardware doesn't have per-channel mute. >> >> Can it be done in software or even set it to -120dB in hardware if that makes sense? > > The Aux input cannot be changed. The Master control actually could go > down to -127 dB; it was restricted to -60 dB because users of the old > alsamixer complained about the slider being unusable. I would agree. The slider would then spend most of its time being inaudible. The difference between -60 and -120 is not much as far as hearing is concerned. If the max output (0 dB) is 100dBabsolute, then -60 is 40dB and -120 is -20 . > > (To change the range, in sound/pci/oxygen/xonar_cs43xx.c, change the > minimum of cs4362a_db_scale to -12700, and set dac_volume_min to 0.) > > > Regards, > Clemens > > ------------------------------------------------------------------------------ > Try before you buy = See our experts in action! > The most comprehensive online learning library for Microsoft developers > is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, > Metro Style Apps, more. Free future releases when you subscribe now! > http://p.sf.net/sfu/learndevnow-dev2 > _______________________________________________ > Alsa-user mailing list > Alsa-user@xxxxxxxxxxxxxxxxxxxxx > https://lists.sourceforge.net/lists/listinfo/alsa-user > -- William G. Unruh | Canadian Institute for| Tel: +1(604)822-3273 Physics&Astronomy | Advanced Research | Fax: +1(604)822-5324 UBC, Vancouver,BC | Program in Cosmology | unruh@xxxxxxxxxxxxxx Canada V6T 1Z1 | and Gravity | www.theory.physics.ubc.ca/ ------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
