Thanks, there are straight lines in audio though right? http://en.wikipedia.org/wiki/Non-sinusoidal_waveform
1 kHz square wave sampled at 44.1 kHz (each square is a sample)
OK, I will keep reading..., soo you're saying if you zoom in enough on a triangle or sawtooth waveform they're actually all sinusoidal right? In nature too? What about something like a Commodore=64 or Casio sound chip?
Frequencies double with each octave. The difference between 5kHz-10kHz is the same as the difference between 20kHz-40kHz. 24kHz is just about one note different from 20kHz in the musical scale. Negiligible.
I really don't know why people seem to want to hear above 20kHz. There's nothing up there to hear except headache inducing sqeals from bad florescent light ballasts.
It's not the fundamental note, it's the overtones etc., which is why 44.1kHz sounds a lot better than 32kHz, I can easily hear it with vocals on my useless laptop speakers, despite the fact no one is singing notes above 16kHz. =p
Edited by kiteki - 5/10/12 at 7:53pm