[IDEA] (stereo) convolver

[cpu98]

Very basic signal processing all you know.
EQ, reverb, hrtf, crossfeed, custom effect, and so on...

load two wav impulse files and then
l_out = (l_in * left impulse file's left ch) + (r_in * right impulse file's left ch)
r_out = (r_in * right impulse file's right ch) + (l_in * left impulse file's right ch)
(I could have messed up description above....)

May we see it in the future.

http://people.bu.edu/edlarson/stereoconv.html
that's foobar's stereo convolver plugin for reference.

or http://convolver.sourceforge.net
multichannel convolver for complex operation.

[BdN3504]

You are aware of this feature, no?

[cpu98]

Yes. I'm using that intensively since 2007.
If I had learned C, I would start something....

I'm dreaming of using kemar diffuse field equalized impulse that works great on the pc.
Would fft burden cpus much?

[isanggon]

I think stereo convolver is very useful, too. If it applied to rockbox, it's one more reason to love rockbox!
But I think a lot of rockbox hardware have not enough processing power or memory to use that feature.

[raudonkepuraite]

"on a 300MHz Pentium II, the reported cpu hit is about 30% when convolving with such a filter."
But i like the idea.