spectrogram

Signal Processing

Short-time Fourier Transform spectrogram. Computes time-frequency representation of a signal by applying FFT to overlapping windowed segments. Returns { S, f, t } — power matrix, frequency vector, time vector.

spectrogram(x)

spectrogram(x, window)

spectrogram(x, window, noverlap, nfft)

x = sin(linspace(0, 100*pi, 1000)); spectrogram(x)

spectrogram(randn(512), 64, 32, 128)