Quantization from ADAA look up tables (in: DSP and Plugin Devel…)
By: signalsmith
6 Aug 08:28
If you’re using a LUT for the integral, then the effective interpolation kernel for the waveshaping LUT is the differential of the kernel you use. So, if you want linear interpolation for your actual waveshaping curve, you need you need to interpolate the integral table using a quadratic scheme like this: www.desmos.com/calculator/yduzz1rxlj
If you use linear interpolation on the integral table, then it will act like nearest-neighbour interpolation for the actual curve. Imagine small …
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