[music-dsp] Is beating the same thing as flanging?

andy butler akbutler at tiscali.co.uk
Mon Nov 15 04:27:00 EST 2010


Peter says:-
> The allpass delays different frequencies differently, creating 
> peaks and notches in the spectrum. 

The clue is in the name "All" pass.
Of itself the allpass filter doesn't create a 
change in the frequency spectrum.

You might want to consider why an analog phaser
has up to 12 stages of allpass filtering.


Indeed, the amount of delay introduced by a single
allpass filter isn't enough to produce a 
"delay based effect"....but stack then up in series
and the delay becomes significant.

Hope that brings something worthwhile to the discussion,
apologies for bandwidth if not.

andy butler







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