On Thu, 18.02.10 14:15, Raymond Yau (superquad.vortex2@xxxxxxxxx) wrote: > VLC media player has a slider from 0% to 300% , so the user are easily to > know 100% is the point which there is no software gain and no software > autentation > > How did PA expose these software amplication in the UI so that ordinary user > can know that point ? Depends on the UI program. gnome-volume-control currently only puts a marker at the ALSA 0dB point, but not a second one where software amp starts. However, I have been talking to a couple of folks regarding presenting that in a nicer way, i.e. colour slider ranges green/yellow/red: http://pulseaudio.org/wiki/WritingVolumeControlUIs#Colouredvolumesliders Summary: green → all hw vol control where alsa reports < 0dB; yellow → hw control where alsa reports > 0dB; and finally red → software volume control. I think this color coding of the slider ranges is the best once can do to represent the technical background of all of this in a way that gives the right indication even for people with no technical background. > For the Mic Boost +20dB case , how PA handle this +20dB switch in the "Flat > Volume" model if you did not expost the Mic Boost switch to the user in the > mixer control ? > > +20dB is quite significant in with the Capture Volume control We currently don't cover boost switches, simply because tehre is no dB data queriable for them. I'd really prefer if those boost switches would be turned into binary volume elements which carry normal dB information like any other volume element. After all they are just a volume element, with only two steps. Lennart -- Lennart Poettering Red Hat, Inc. lennart [at] poettering [dot] net http://0pointer.net/lennart/ GnuPG 0x1A015CC4 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
