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Re: [Om-synth] splitting audio signals
From: |
Benjamin Flaming |
Subject: |
Re: [Om-synth] splitting audio signals |
Date: |
Sat, 4 Nov 2006 13:32:33 -0600 |
User-agent: |
KMail/1.9.4 |
On Wednesday 01 November 2006 3:28 pm, Lars Luthman wrote:
> On Wed, 2006-11-01 at 15:57 +0100, at0m|c wrote:
> > For splitting audio into frequency bands, you may want to try applying
> > a single filter, inverting the filtered signal and mixing it back with
> > the original. Now the output of the filter and the output of that mix
> > are 2 complementary parts, adding up to the original stream again. You
> > can re-apply this technique to achieve multiple frequency bands...
>
> Wouldn't that work only if the filter has a flat phase response?
It might be more effective with such a filter (I don't know/remember enough
DSP theory), but I can attest from first-hand experience that this does, in
fact, work quite well with with non-linear phase filters. I successfully
employed this technique many years ago to build a usable 5-band compressor
out of the severely-crippled "Digi-Rack" plug-ins that ship with Pro Tools.
|)
|)enji