Process a recorded note (an audio waveform) from a synthesizer or other source into single-cycle waveforms, ready to be imported into a Wavetable synth like Serum, Phaseplant, Vital, etc.

python3 wav2wavetable.py <recorded-note-audio-filename>

• Read a WAV into memory
• Detect individual cycles regardless of complexity and zero crossings, using autocorrelation
• Find prominent peaks in the autocorrelation function, these correspond to the main period, and our single-cycle cut points
• Snip the WAV at the single cycle points and export all new files to disk

• Many synthesizers do not generated notes with equal-sized cycles, that fit an exact (or integral) number of samples.
• Individual cycles can therefore be of different (though not fully random) lengths
• Individual cycles can also have {no, a single, or dozens of} zero crossings, making visual/manual waveform analysis tedious 😅😅

• Record a couple seconds of a held note on a synth (say Reaktor's Oki Computer)
• Chop it into cycles
• Export each cycle individually from left to right
• Import (or drag) batch of single-cycle WAVs into Serum