#809: Stream volumes should be relative to sink volume
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Reporter: Horazont | Owner: lennart
Type: enhancement | Status: new
Milestone: | Component: daemon
Keywords: stream volume relative sink |
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Hi all,
What is currently happening:
Assume I have one sink which is normally at 23% volume.
I use some apps, like pidgin (instant messaging), things which perform
short outputs of sounds (their streams are at 23% too).
Now I increase the sink volume to a higher volume, say 60%.
Moreover, I have my music stream which is at 23% now, while the sink is at
60%.
Then, somebody sends me a message in pidgin. This leads to two things.
First: There is a small distorted noise sound, just a few milliseconds
long, at the beginning of the sound played by pidgin. Second: My ears blow
off. The reason (just a guess): The pidgin stream was relatively to the
sink (the last time it played) at 100%, because its volume was at 23%,
just like the sink. Now, the sink is set to 60% and thus the pidgin stream
is set to 60% too when it respawns. The sudden addition of a stream which
is set to a (much?) higher volume seems to be the reason for the small
noise sound (just a guess, again).
I propose the following:
The stream volume value should be relative to the one of the corresponding
sink. That is, when the sink is set to 23% and the stream is set to 100%,
the result should be as loud as if I had set both sink and stream (or only
the stream) to 23% in the current setup.
This would also follow the principle of the least surprise (from my point
of view), since the sink's volume should be something like the Master
channel of a mixer, which regulates all other channels too. For this
regulation there is some kind of emulation currently. When I increase the
volume of the sink, the volume of the associated streams increases
dependent on their value relative to the current sinks value. But this
does not (seem to) work for streams which are currently not playing.
RFC
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Ticket URL: <http://pulseaudio.org/ticket/809>
PulseAudio <http://pulseaudio.org/>
The PulseAudio Sound Server
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