>From: Sampo A Syreeni <ssyreeni@cc.helsinki.fi>
>
>That's a multiband compressor - basically, it's a whole different kind of
>beast from the rather simplistic tool usually dubbed as a 'compressor'.
I know two types of these multiband compressors:
(i) Moorer's compressor uses fixed set of four bands which are overlapping;
however, it is not the kind of overlapping seen in the FFT but more
carefully planned (those four bands are made by combining 16 FFT bands).
(ii) Sound Forge (or Cool Edit?) has a compressor with four bands made
by simple band-pass filters; it is suggested that the bands doesn't overlap;
this looks like a quick hack with respect to Moorer's system.
Moorer's system was used in the movie Amadeus as a noise gate; 256
bands got from FFT were used directly, not the four band system which
is also described in the paper.
Juhana
This archive was generated by hypermail 2b29 : Mon Jan 28 2002 - 11:46:31 EST