Logarithmic FFT
Hello,
I'm use the fft~ and cartopol~ object for a simple audio-reactive patch by writing the cartopol~ outputs into a jit.matrix with jit.poke~. Is there any way to get a logarithmic distribution of the frequency-bins? This could bring down the number of FFT calculations and make it easier to work with the resulting matrix for vizualisations.
there's a technique to do something like that here:
https://cycling74.com/forums/-gen-sharing-fft-global-experiment-on-fft-manipulations
but not sure that the rescaling is bringing "down the number of FFT calculations" the way you might like, more like refocusing on significant bins in a different way(perhaps that allows for wiggle room in terms of what FFT size and sampling-rate you use though).
Thank you, that thread is very helpful! Yes, I meant being able to decrease the FFT while retaining enough accuracy.