Page 24 - Vibrations

1
() = ∫ () −2
0

The FT behaves in the

same way a prism.

As you pass a signal into

the Fourier Transform it

separates out all the

frequencies in the signal.

It then puts the frequencies in bins - called

frequency bins.

In general, the longer the duration of the waveform

the greater the number of frequency bins.

Here is the spectrum of a square wave.

23