[Stk] Tutorial out of date?

[Gary Scavone]

Hi Ross,

Can you send details regarding your OS, audio card, audio parameters,  
and compilation flags?

Regards,

--gary

On 18-Jun-08, at 4:25 AM, Ross Clement wrote:

>
>
> On Tue, Jun 17, 2008 at 5:13 PM, Perry R Cook <prc at cs.princeton.edu>  
> wrote:
> Each version/flavor of Intel/Audio hardware
> might require playing with buffer sizes and
> possibly using blocking vs. callback.  Try
> increasing the buffersize.
>
> PRC
>
> For callback, I tried increasing the buffer size all the way up to  
> 65536 frames/buffer. I also tried blocking with RtWvOut. Both still  
> gave crackling sound.
>
> I would prefer not to have to backtrack to the 4.2.1 version. Can  
> anyone recommend what I might try?
>
> Portaudio V19 works fine on my machine with the Intel sound  
> hardware. I could of course write my programs using portaudio for  
> input/output, but this is clearly far from ideal.
>
> This is the modified code in my crtsine.cpp
>
>   // Figure out how many bytes in an StkFloat and setup the RtAudio  
> stream.
>   RtAudio::StreamParameters parameters;
>   parameters.deviceId = dac.getDefaultOutputDevice();
>   parameters.nChannels = 2;
>   RtAudioFormat format = ( sizeof(StkFloat) == 8 ) ?  
> RTAUDIO_FLOAT64 : RTAUDIO_FLOAT32;
>   unsigned int bufferFrames = RT_BUFFER_SIZE * 128;
>
>   std::cout << "bufferFrames is " << bufferFrames << std::endl;
>
>  try {
>     dac.openStream( &parameters, NULL, format, (unsigned  
> int)Stk::sampleRate(), &bufferFrames, &tick, (void *)&sine );
>   }
>
> Cheers,
>
> Ross Clement
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