Input clipping Bug in FuncShaper

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3 posts since 5 Nov, 2015

Post Mon Jan 21, 2019 1:10 pm

I've found a bug in FuncShaper that causes input signals to be clipped prematurely.

Input: +6 dB peak sine wave

y = x. The input is clipped at ~3.5 dB.

Using the tanh equivalent equation 2/(1+exp(-2x))-1 the input is clipped prior to the waveshaper.
If, instead, a unity gain sine wave is input and the equation is changed to 2/(1+exp(-4x))-1, the correct waveform is produced.

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