The FFT (Fast Fourier Transform) ... The time domain representation of a complex signal composed of a sine wave and a sinc function. The time-domain representation of the signal provides nothing ...

The resolution bandwidth of the FFT is the reciprocal of the time duration of the input signal. In our example, the input time signal has a duration of 5 μs and the resolution bandwidth is 200 kHz.

The FFT requires a time domain record with a number of samples (M) that is a power of 2. The FFT spectrum consists of M/2 discrete frequency bins with a range from dc to f S /2, and a bin width of ...