Hi all:

Anyone have any information on heterodyne analysis besides what is
available in the Csound manual?  It seems very close to the theoretical
description of the phase vocoder (when described as a series of bandpass
filters, as opposed to the FFT-based version).  Does it have any
advantages to the phase vocoder, or is it just an older routine? (It
seems very close to an analysis program James Beauchamp describes in a
computer music book I have from 1969).

Thanks,