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This is really not how you want to deal with this bug :/.  It's a known fact 
that audio mixers are very bad with low volumes. Setting a volume to 0 (or 
something really small) can put a very high load on the CPU for the audio 
mixer, which causes severe problems. See 
https://jira.secondlife.com/browse/VWR-14914

So, on the contrary (as VWR-14914 fixed a horrible bug that made FPS drop 
drastically): when the volume is set to 0 (or even close to zero) the audio 
channel has to be muted and not mixed, ever. Assuming that VWR-14914 is in 
Viewer 2, and wasn't broken in the meantime, a volume of 0 would cause the 
channel to be muted, but setting it to 0.000001 will not cause it to be muted, 
but result in a high CPU load.


- Aleric


On Jan. 6, 2011, 2:37 p.m., Jonathan Yap wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> http://codereview.secondlife.com/r/72/
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> 
> (Updated Jan. 6, 2011, 2:37 p.m.)
> 
> 
> Review request for Viewer.
> 
> 
> Summary
> -------
> 
> There is an edge case in setMasterGain during startup which prevents 
> setInternalGain from being called if the master volume setting and 
> mInternalGain both equal 0.
> 
> Setting mInternalGain to a very low but non-zero value fixes this issue.
> 
> 
> This addresses bug STORM-830.
>     http://jira.secondlife.com/browse/STORM-830
> 
> 
> Diffs
> -----
> 
>   indra/llaudio/llaudioengine.cpp 6d44f0d85a80 
> 
> Diff: http://codereview.secondlife.com/r/72/diff
> 
> 
> Testing
> -------
> 
> In Preferences / Sound & Media tested:
> Buttons
> Ambient
> Sound Effects
> Stream Music
> Media
> Voice Chat
> 
> 
> Thanks,
> 
> Jonathan
> 
>

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