In Praise of Tanh

By Scott Petersen | October 19, 2025 |
Image displays the FFT spectral content of a sound file where that sound file has been run through a tanh function.

Brothers, Sisters, Cat People and Dog People, Non-human humans and others, I write here today in praise of tanh (pronounced “tanch” like “ranch” — IYKYK.) If you regularly employ tanh to solve your computer music problems, great! If you are “what is tanh?” then read on! Problems You’ve got problems. I’ve got problems. We’ve all…

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