[Stk] Stream underflow errors on Windows

[Matt Day]

Thanks, this sounds very plausible. However, I stepped through the
initialisation code in STK and everything looks
OK. In fact, I can't see how STK could be using anything other than the
dsound calls, unless you are suggesting that Windows decides to delegate
these calls to winmm?

I have also tried building under MinGW and I get the same issue.

Thanks,
Matt


On 12 June 2013 14:21, Jeremy Jurksztowicz <jurksztowicz at gmail.com> wrote:

> 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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