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 <[email protected]>
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.
Have you got any support from other people for your proposed subwoofer
slider behaviour?
FWIW, after I came up with the name "lfe balance" (just to see if there
was another name for the same thing), the first hit is to some Apple
program, which seems to be using the LFE balance the same way. [1]
If I understand correctly, the bug is about strange relation between
the overall volume slider and the subwoofer volume slider. I fully
agree with Britt Yazel (comment #10). However, I don't know if the
subwoofer slider can be made sane without an API that supports the
"overall volume" concept properly (which pa_cvolume doesn't do).
...and is unlikely to do any time soon, so we need something else.
--
David Henningsson, Canonical Ltd.
https://launchpad.net/~diwic
[1] https://support.apple.com/kb/PH12578?locale=sv_SE
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