[LAD] (Modular) Synth and Clipping
fons at linuxaudio.org
Sun Jun 16 11:58:19 UTC 2013
On Sun, Jun 16, 2013 at 12:55:37PM +0200, Tim Goetze wrote:
> The heart of many distortion pedals is a clip|filter|clip chain, but
> there are so many ways to vary or extend the scheme. For example, an
> interesting approach to digital ladder filters wedges saturation
> circuitry between the filter stages.
Or the (usually soft) clipping can inside the filter itself.
This happens e.g. in the 'Moog ladder' filter, where the signal
dependent emitter impedances of the transistor pairs act as the
resistors in a series of four simple RC filters.
The soft clipping that results follows a tanh() law.
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