[Openal-devel] Equalizer Effect Output Levels

[Paul McDonald]

Hi there,

I'm trying to create a little visual effects program which uses OpenAL. The
idea is to change the colours of the scene in time to a music track.

I was hoping to use the built in EFX equalizer as a spectrum analyzer. The
four bands would be ideal for outputting to a graphics shader vector, as
long as I have correctly "tuned" the frequency bands to the music I'm using.
This would save me having to write any filtering functions.

So my question is: Is it possible to get the output levels of each band in
the equalizer which are used in the final mix?

I don't need to hear the equalized track, so I can set the effects gain to
zero. I will pay out the direct sound and hopefully just use the relative
levels of the equalizer bands as some input to the graphics shaders.

Thanks,
Paul
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