I was reading this tutorial by the master earlevel, while trying to build some sort of wavetable.
He says First, let’s back up and figure out how long our tables need to be. Recalling that we need to sample a signal at greater than twice the highest frequency component, that means that for 368 harmonics, we need at least 368 x 2 + 1 samples, or a table length of at least 737 samples., refering to a 40hz (lowest wavetable frequency) and the following harmonics (up to 14720 hz).
Not really sure about those 737 samples keeping the sampling theorem by Nyquist. Should be 40 * 368 * 2 + 1 samples needed? That's the real "highest frequency component" of the signal. Why 368 * 2 + 1?
Not really sure why I just need a 737 samples to express a signal that reach ~15khz.