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Serum tutorials http://www.adsrsounds.com/category/serum-tutorials/
In this tutorial, Echo Sound Works shows you what the Harmonic editor is in Serum and how you can use it to add some unique properties to your sounds.
A Harmonic editor stems from Additive Synthesis, a form of synthesis where you add harmonics together to create partials and overtones and ultimately sound. Serum has this basic capability which is quite fun and interesting to pair with wavetable synthesis.
Cheers
Echo Sound Works