AW: Vocoder Idea

[Haible Juergen]

	> I have the impression that this channel saving trick won't work.
	> The analysis filter needs some time to measure the incomming
	> spectrum correctly, and this time is inverse proportional to the
	> filter frequency (Fourier Theory). This would mean that the filter
	> has to stay very long at the lowest frequencys in order to run in,
	> so the overall analysis response will be very slow.
	> Say fmin=40Hz ->Tcycle = 25ms, if we need 3 cycles to run in this
makes
	> 75 ms just for the lowest channel. Adding time for the other
channels
	> will lead to s&h update intervals of > 0.2s, this seems
	> to me as a very slow response of the overall system.

Exactly.

JH.