2007mar11
Alex,
P.S. Here are some spectrogram-related things you may want to check out:
This is from Norm Spier's DYNAMIC SPECTROGRAMS OF MUSIC page:
Norm has also made a freeware spectrogram tool with a linear approach to the octave-wrapping issue; its interface looks like this:
Norm also pointed me to these two freeware spectrogram tools:
S.