[sdiy] Low Pass filters and musically useful frequency range

Florian Anwander fanwander at mnet-online.de
Wed May 7 16:45:50 CEST 2014


Am 07.05.2014 09:37, schrieb Richard Wentk:
> For a modular HPF 20Hz should be low enough. I can't think of a good
> reason to go lower for audio - although if you want to start
> filtering LFOs and ADSRs for special effects, you might want to go
> down to 1Hz.

I think it always depends on... can you use a self resonating filter as 
an oscillator? If this filter based "sine oscillator" is used as 
modulator for something else in the average audio range, then you might 
want to turn down the frequency of the 
modulator(=sine-oscillator(=resonating VCF)) into the LFO range.

I think the subject of this thread is a bit narrow minded if we talk 
about modular systems. In a modular system nothing is defined to do 
signals in the audio range only. If we talk about a minimoog-style fixed 
patch synth, then the subject is ok.


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