Re: Calibrating Buffer Size and Count

On Thu, 2010-05-27 at 23:43 -0700, Chris Robinson wrote: 
> On Thursday, May 27, 2010 10:10:09 pm Kip Warner wrote:
> > Hey everyone,
> > 
> > A few questions on buffers and sources.
> > 
> > Besides hearing the obvious stutter and clicks in a streamable source
> > and then updating the buffer size and number of buffers accordingly for
> > it, is there any way to reasonably determine their optimal size and
> > number at runtime?
> 
> I think 4 or 8 buffers to cover one or two seconds worth of audio would be a 
> good number and size for a stream. Many cache-able sound effects in games can 
> exceed a second, I think, so I don't see it as a problem for a stream buffer 
> size. And if someone has stuttering problems with that, there are probably 
> going to be other issues, too.
> 
> > In games, sound effects are generally buffered in full, while anything
> > longer, like music, is streamed?
> 
> Music and maybe voice tracks (sounds that can be several seconds and won't be 
> used again) could be streamed. In general, sound effects are ideally buffered 
> in full and kept around for reuse, yes.

Thanks Chris. What about the size of the individual buffers? How do you
determine how large they should be? I see the term "frame size" and
"buffer size" used in a couple places and I'm not sure what the
difference is.

-- 
Kip Warner -- Software Engineer
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http://www.thevertigo.com

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