2x oversampling works better than 4-16x oversampling in some circumstances

wolf-plugins / wolf-shaper

Waveshaper plugin with a spline-based graph editor (LV2, VST, and CLAP)

https://wolf-plugins.github.io/wolf-shaper/

GNU General Public License v3.0

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2x oversampling works better than 4-16x oversampling in some circumstances #154

Open pdesaulniers opened 3 years ago

pdesaulniers commented 3 years ago

Reported by @unfa: SSR-2021-09-17_12.55.07.webm

I'm not sure, but it seems like the lowpass filter becomes less steep at higher sample rates, which causes aliasing.

unfa commented 3 years ago

This is strange. Because a higher internal sample rate would also give the lowpass filter much more headroom to do a good job, so this should be a problem!