Parts of any curve can be approximated with a polynom. It is a common practise in dsp and also the math libraries of programming languages. If it is done properly it gives pretty precise results with low cpu demand.
https://en.m.wikipedia.org/wiki/Approximation_theory
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Tone2 Synthesizers Tone2 Synthesizers https://www.kvraudio.com/forum/memberlist.php?mode=viewprofile&u=680600
- KVRist
- 211 posts since 18 Oct, 2023
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gaggle of hermits gaggle of hermits https://www.kvraudio.com/forum/memberlist.php?mode=viewprofile&u=521655
- KVRian
- 965 posts since 18 Jul, 2021
that is modelling.
what you're quibbling over is the level of detail involved. a waveshaper is towards the lower end and circuit models are at the higher end. but if polynomial approximations get your goat, don't under any circumstances look inside SPICE, the champ of "analogue modelling".
ditto neural-network approximations, which in principle can model any physical process.
