I've been examining a bit more the output of the fft and I am not sure about the spectrum magnitudes obtained after analysis. For instance, analysing the peaks of a SinOsc with unity gain in a similar manner as in examples/analysis/tracking/pitch-track.ck will print out values of max (maximum peak) around 0.26 instead of values near 1 (depending on the window used and the frequency. I've used a hamming window and a freq proportional to sample_rate/fft_size). Why is this? I've forgotten some of the implications of performing an FFT but I believe the values of the magnitudes obtained after an FFT are half the original value, but then, in the example above, one should obtain peak values near 0.5. What is the cause for this? Could it be that windowing is not normalised? I'd like to be sure of the values I should expect in order to set thresholds above which spectral peaks will be taken into account. thanks in advance, eduard