je me permets de copier coller la réponse d'Andreas:
"Glad your questions are solved.
Also,the video you are referring may be a bit outdated.
There is no clean 'square' wave from the final carrier out. It may be a very folded sine (square alike), or with another knobs positions the square wave has increased third harmonic (more odd stuff). And the double saw you may see from the video (which is first prototype module) afterwards was mixed with sine a bit, so that's a saw wave with added second harmonic (more even stuff). Also, all three knobs depend on one another and that's the idea of waveshaping
Strong zero core will have same waveshapers, however much deeper and metallic linear FM (that's where stock VCO core is weaker)."
J'avais remarqué des harmoniques différentes aussi entre mon furthrr et la vidéo, mais il en a donné l'explication
Vraiment incroyable ce module!
ps: lors de mon test, je me référais à cette vidéo: [Vous devez être inscrit et connecté pour voir ce lien]