great work. especially by using the extract function.
but i ve some problem with the SamplesCallbackEvent (is not a compile-time constant). Can someone tell me how can u fix it so that i can run it?

Thanks so much for putting this out there. I looked for weeks for an answer on this, but had such a hard time with the math of it all. It’s been years since college and my math skills just aren’t what they used to be.

at global$init()

Basically What I did was this:

while (i < BUFFER_SIZE) {
	_sampleBufferL[i] = _samples.readFloat();
	_sampleBufferR[i] = _samples.readFloat();
	i  ;
}

_eqL.compute(_sampleBufferL);
_eqR.compute(_sampleBufferR);

i = 0;
while (i < BUFFER_SIZE) {
	l = _sampleBufferL[i];
	r = _sampleBufferR[i];
	_out_snd.samplesCallbackData.writeFloat(l);
	_out_snd.samplesCallbackData.writeFloat(r);
	i  ;
}

In the EQ class I then loop through the _sampleBuffer and write over the sample with the modified value.

I did use an extra loop to split up the values from the _samples into separate vectors for the left and right channels, but I also tested by processing the two channels as one so I did not need that loop, and still the method of calling the EQ.compute function for each iteration is still somewhat faster.

I have updated the source in the the original link to process the channels independently, which made an audible improvement, as well as having it display the average time it takes for each samplesCallbackEvent to process.

If you are interested in the modified source I used for testing the approach suggested by spender (as I understood it at least) you can grab it here. ]]>