fft

Signal Processing

Fast Fourier Transform. Converts a time-domain signal into its frequency-domain representation. Returns an array of {re, im} complex values. Use with linspace-generated signals for frequency analysis.

fft(x)

fft(x, n)

fft([1, 0, 1, 0])

fs = 100; t = linspace(0, 1, fs); x = sin(2*pi*10*t); X = fft(x)