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Re: An effect I've been working on

 > > > The wavelet approach has several advantages over normal Fourier filtering
 > > > since its filters have local support both in time and frequency,
 > >
 > > Due to the uncertainty principle this ain't possible for linear
 > > time-frequency distributions.
 > Agreed, in theory: a signal can't be at the same time
 > limited on both domains.

Yes, this explains why people have such a hard time getting off the telephone:
 Since the phone line is bandlimited to 3 kHz or so, it cannot be time limited.
 -- JOS