Red Hat Bugzilla – Bug 489297
Reference on dB in gnome-volume-control-applet is misleading
Last modified: 2013-03-07 21:05:11 EST
Created attachment 334498 [details]
100 % = -0.6 dB
Description of problem:
The same 100 % of output on the new applet sometimes means different value in dB. See the two attached images.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Have < 100 %
2. Do some up'n'down with the pop up slider and/or change the volume with mouse's second button (wheel)
dB differs: -0.6 dB v. -4.38 dB
dB are always the same on each percentage level
Created attachment 334500 [details]
100 % = -4.38 dB
I'll double-check this. I presume it will be a bug in PulseAudio, but I have no proof of that yet.
It's a gnome-media bug. Upstream bug is at:
Fixed in gnome-media 2.25.92-4:
Is it correct that 100% equals 0.00db and 50% equals -30.00db? Maybe I'm totally misreading this but it makes no sense to me... (I just tested with the latest gnome-media from koji)
That's the way that dB information is used for soundcards.