linuxaudio.org

[J=C3=B6rn Nettingsmeier]

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>> http://quitte.de/dsp/caps.html

>

> that's excellent documentation! i'm looking forward to listen to the satu=

ration

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> functions in particular, looks like there is much to learn. thanks for cr=

eating

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> and sharing this!

Thanks J=C3=B6rn, glad you like the first look :)
It's worth noting that most of the saturation functions are idealised

approximations, but judging from informal listening tests conducted

during development there is no appreciable difference from waveshaping

using voltage mapping data gathered from tube or diode simulations.

And once you give them enough gain, they all begin to sound more or

less the same anyway, because the output invariably approaches a

square wave.
If you're looking to build a classic fuzz pedal, you need two

saturators in series and some sort of filter or eq before, inbetween

and optionally after.  The tuning of the filters is the part that

makes a good sound, much more important than the choice of diode, tube

or saturating function.
If, however, you're looking for digital 0 dB protection, you're best

off with mode 3, "clip".  It's strictly linear up to amplitude ceiling

of -0.9 dB.