[sDIY] idea? Multi-band splitter module?

[Magnus Danielson]

From: ADSR at aol.com
Subject: [sDIY] idea? Multi-band splitter module?
Date: Sat, 26 Feb 2000 02:08:09 EST

> This seems like such a simple idea for a module, does anything like this 
> exist?  (MOTM, Blacet idea?)
> Basically it would be:
> 3 or 4 Bandpass filters with selectable freq. range (VC controllable?) 
> outputs for each band to allow for further processing.
> 
> OR Is this not the best way do this?:
> It would be great to be able to split a signal into bands like a crossover, 
> then run each part through different signal chains: like  send 70-200hz to 
> distortion, 300-800 to say a phase shifter, 900-1200 to ring mod and then 
> perhaps the next band to a different phase shifter... or any 
> combination...etc... 

Even if Paul has replied to this... a small comment.

It is easy to create a filter which will act as both lowpass and highpass
filter for a signal, so one output is the lowpass part and another output holds
the highpass signal. Then, with such filters you may create a frequency
spectra division tree where the "root" filter (the filter seeing the original
signal) will divide the spectra up into two sections using one of the middle
frequencies. Then, the outputs is sent into other filters but dividing its
section into smaller sections. This way can you create a n-band sectioning of
frequency content where the lowest and highest bands will be pure lowpass and
highpass respectively.

It works for Vocoders as well.

Cheers,
Magnus