On Tue, Mar 3, 2020, at 4:21 PM, robert bristow-johnson wrote:
>
> Like a lotta things, sometimes people use the same term to mean something
> different. A "phase vocoder" (an STFT thing a la Portnoff) is not the same as
> a "channel vocoder" (which is a filter bank thing).
It’s maybe worth noting that the STFT _is_ a filter bank where each channel is
sampled at the hop size and the bandwidth of each band pass filter is just the
Fourier transform of the windowing function. There’s some phase twiddling you
can do to convert between a modulated or demodulated filter bank.
-s
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