FFT, Frequency Shift Keying.

Cuthbert Nyack
An FSK signal is shown in the applet below. The signal is switched between 2 frequencies w1 and w3 at a rate w2.

The spectrum consists of 2 ASK spectra centered at w1 and w3 with the spacing of the lines being determined by w2.

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COPYRIGHT 2007 Cuthbert Nyack.