On Fri, 2015-09-18 at 15:33 +0200, David Henningsson wrote: > > On 2015-09-18 15:17, Tanu Kaskinen wrote: > > On Fri, 2015-09-18 at 14:47 +0200, David Henningsson wrote: > > > The gnome/unity-control-center UIs have a master volume slider, and > > > three sub-sliders: balance, fade, and subwoofer. Balance and fade > > > use PA's set_balance and set_fade APIs accordingly, but the subwoofer > > > slider sometimes does unintuitive things. > > > > > > In order to make that slider behave better, let's add a LFE balance > > > API that these volume control UIs can use instead. With this API, > > > the UI can balance between "no subwoofer" and "only subwoofer" with > > > "equal balance" in the middle, which would make it more consistent > > > with the behaviour of the other sliders. > > > > > > BugLink: https://bugzilla.gnome.org/show_bug.cgi?id=753847 > > > > > > Signed-off-by: David Henningsson <david.henningsson at canonical.com> > > > > As a user, I don't expect a subwoofer slider to mute other channels. > > What you got with my patch (and one patch to -control-center to use the > API) is three sliders. They're all adjusting the balance in the sense > that in the middle, all channels are loud, and some channels are > gradually weakening when you move a slider towards the edge. > > I find that to be the most consistent. Having thought about this some more, I have become to like your proposal very much. Either there should be only per-channel volumes, or only balance sliders that work as you explained. If there were left -right and rear-front balance sliders plus a pure subwoofer channel volume, like what I believe Britt and me originally wanted, there would be no way to make the subwoofer channel louder than the other channels. So, the idea has a strong ack from me, I didn't review the code yet. -- Tanu
