Normalize FFT magnitude to imitate WMP

Question

So, I\'ve been working on a little visualizer for sound files, just for fun. I basically wanted to imitate the \"Scope\" and \"Ocean Mist\" visualizers in Windows Media Play

Answer 1

Normally for this kind of thing you want to convert your FFT output to a power spectrum, usually with a log (dB) amplitude scale, e.g. for a given output bin:

p = 10.0 * log10 (re * re + im * im);