@devant Not directly through the public methods. However, the arrays where all the data is stored are declared protected, so you could do something like extend FFT and access them in the methods of your class.

So you’re saying that if you want the value of band number 1024, then it would correspond to a frequency of 44100 Hz. However, with a 44kHz sampling rate, the maximum frequency information you can obtain is 22kHz (determined by the Nyquist bandwidth calculation).

Could you please explain this further? How would something sampled at 44kHz allow your FFT to have bands anywhere past 22kHz?

Thanks.

* It also allows you to turn windowing on and off,
* but you will see there is not much difference in the spectrum

Switching the vertical axis to log scale (dB) makes the difference much clearer; rectangular windowing causes lots of spread of spectral peaks, which hamming windows fix. You can see this by changing the line() command in the draw() method:

// draw the line for frequency band i using dB scale
line(i, height, i, height – Math.round(2*20*Math.log10(100*fft.getBand(i))));

DAn.