3 ms·

It has the most harmonics.

• alterom 2y ago
  Just to add: harmonics are sine waves, in essence. A pure sine wave has only one harmonic. You need to add up a bunch of sine waves of different frequencies (multiples of the fundamental) to get something as, in a way, unnatural as a square (or sawtooth) wave. That's why they're great building blocks for subtractive synthesis too. Pass them through a resonant filter, and you get something interesting. They are also very easy to make digitally (a square wave is just on-off-on-off..).