On Tue, Oct 21, 2014 at 06:14:55PM -0700, Kuninori Morimoto wrote:
This sample indicates Mute -> Volume 100% -> Mute
amixer set "DVC Out Ramp" 100% // Mute as default amixer set "DVC Out Ramp Period" 80%
Normally this would be expressed as an enum with some sort of time units. We did discuss at the mini-summit making a standard way of expressing this but nobody did that yet.
amixer set "DVC Out Ramp Enable" on
That "Enable" should be a Switch control.
aplay xxx.wav & amixer set "DVC Out Ramp" 0% // to Volume 100% amixer set "DVC Out Ramp" 100% // to Mute
I'm not sure I quite understand this control - what exactly is this setting? It appears that the ramp value is the opposite of the volume we end up with which is a bit odd and the comments suggest that this is actually triggering a ramp when normally ramps would be done as part of a volume set, mute or power up/down operation.