[pulseaudio-discuss] Questions about setting volume over "base volume"
fykcee1 at gmail.com
Tue Apr 10 03:14:22 PDT 2012
Thanks for the reply.
在 2012年4月9日 下午10:59，Colin Guthrie <gmane at colin.guthr.ie> 写道：
> 'Twas brillig, and fykcee1 at gmail.com at 09/04/12 15:05 did gyre and gimble:
>> Hi all,
>> I found the sound playback quality will become bad if I set volume
>> over "base volume" in gnome-volume-control.
>> Why? Does it boost volume by software way in the case of "over base
>> volume"? If yes, who do the job? PA or alsa?
> Basically the "Base Volume" is what ALSA reports to us as it's 0dB
> point. Going above the base volume may very well case clipping and
> quality loss. This is why we show it clearly.
Why it needs volume over 100%? (And it is done by alsa, right? )
I've read http://www.robotplanet.dk/audio/audio_gui_design/, but still
have no idea in what situation we need volume over 100% ?
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