seanadams wrote: > Pat Farrell;231084 Wrote: >> Nyquist deals with sine waves. > > NO! Nyquist deals with _signals_. ALL signals can be expressed in terms > of sine waves. That includes square waves, triangle waves, flute waves, > Christina Aguilera waves, pink noise, stock prices, daily temperature > measurements, etc. > > This concept is really the cornerstone of everything we know about > audio, both digital and analog.
So, Sean, are you sure? Since a square wave has infinite (to the closest approximation) bandwidth, how can nyquist sample it? Unless, of course, you use an infinite sample rate. If you sample a 20kHz square wave at 44.1kHz, you will get a sample than when you feed it back through a ADC will be a sine wave at 20kHz with a few harmonics. -- Pat Farrell http://www.pfarrell.com/ _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
