[Stk] Stream underflow errors on Windows

[Jeremy Jurksztowicz]

Audio problems such as this are often caused by using a very old windows
sound driver, I think it's called WINMM? I had the same problem, regardless
of how generously I buffered, with SDL_Mixer. After tracing out app
initialization, I realized that the old crusty windows audio system was
being used. After fiddling with t he setup I got DirectX to handle the
sound and it is flawless.

I don't know if this is your problem, but it's worth a shot.

Good luck,
Jeremy J.


On Wed, Jun 12, 2013 at 4:42 AM, Matt Day <matt.day at york.ac.uk> wrote:

> Hi Gary,
>
> Thanks for the suggestion, but even with 64 buffers of 4096 frames I
> still see underflow.
>
> Matt
>
>
> Gary Scavone wrote:
> > Hi Matt,
> >
> > You might try modifying the "number of buffers" parameter.
> >
> > --gary
> >
> > On 2013-06-10, at 11:15 AM, Matt Day <matt.day at york.ac.uk> wrote:
> >
> >
> >> I suspect this may be a common issue although my searches did not reveal
> >> any discussion of it. Apologies if I have missed something.
> >>
> >> When building applications under Windows that use full-duplex realtime
> >> audio, I always see stream underflow errors which result in
> >> discontinuities in the output audio. I have tried increasing the buffer
> >> size, and this usually reduces how often it occurs, but it will still
> >> invariably occur once. The issue can be seen just by building and
> >> running the duplex example under the free version of Visual Studio. I
> >> have run this example on 3 different machines and all three exhibit the
> >> issue (either running WinXP or WinXP x64 edition).
> >>
> >> I would be most grateful if anyone can point me to any information on
> >> the issue and why it might occur.
> >>
> >> Many thanks,
> >> Matt
> >>
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>
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