Playing the PolySynth I noticed that the harmonic content of the chosen waveform actually seems to reflect the harmonic content of the input signal (mostly in Poly mode but also somewhat in Mono mode). What I mean by this is if you pluck a note low on the neck and then the same note much higher on the neck, the note plucked low will create much more harmonic content in the oscillator output. If the PolySynth was simply tracking a fundamental pitch and controlling the oscillator with that pitch, I would expect the harmonic content of the oscillator to be the same no matter where I plucked the note.
I’m curious what this implies as far as the PolySynth pitch detection. How is the PolySynth determining what frequency the oscillator(s) should operate at? Is it looking at all the harmonics of the input signal and making a choice based on the most prominent peaks? If so, how does it differentiate the fundamental pitch from something like the 6th or above harmonic, even when those upper harmonics are actually higher in magnitude than the fundamental? It feels to me like the decision for oscillator frequency mapping must be somewhat based on most prominent peaks since sometimes large open chords don’t have each note fully represented in the synth output.
Would be very grateful for any insight from the Eventide team. I of course don’t expect that all secrets are shared but as a student who has a passion for DSP I am very curious and hoping Eventide can point me in the right direction.
Thanks so much!
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