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overview
 The Fourier Transform
As you know, sound is vibration that propagates through air (or any other medium; don't be fooled by cheap science fiction movies--sound cannot cross the vacuum of empty space). What causes the vibration of the air is usually the vibration of other objects--vocal chords, musical instruments, speakers, and so on.
preview:
http://www.relisoft.com/Science/Physics/sound.html
8/26/2004
Tags: fft
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