2010/8/6 Sebastian H. vand2@gmx.de
EQ Peaks is a volatile control without write access (i.e. you cannot
use
slider since you cannot modify the value ) which provide the peak of 10 bands (31Hz, 63Hz, 125Hz, 250Hz, 500Hz, 1Kz, 2Kz, 4Kz, 8Kz , 16Kz) stereo channels of the au8830's hardware equalizer , ( one stereo vu-meters at each band )
The values are ordered by left channel of 10 bands followed by right channel of 10 bands
control.12 { comment.access read comment.type INTEGER comment.count 20 comment.range '0 - 32767' iface MIXER name 'EQ Peaks' value.0 1 value.1 1 value.2 0 value.3 0 value.4 1 value.5 1 value.6 1 value.7 1 value.8 0 value.9 0 value.10 1 value.11 1 value.12 0 value.13 0 value.14 0 value.15 0 value.16 1 value.17 1 value.18 0 value.19 0 }
Where do you get this listing from? I greped through the alsa source but did not find it. Is it an amixer output or so?
it is the content of file produced by "alsactl store -f abc.txt"
alsactl is an alsa-util which store/restore the setting of the sound cards when you logout/login or the system is shutdown/boot
BTW , it seem that the slider cannot individually control left or right channels volume
How about selecting other CTL devices such as pulse (alsa-pulse plugin) or equal ( alsa-equalizer plugin )