SpectrogramArray

SpectrogramArray[list] returns the spectrogram data of list.

• SpectrogramArray[list, n] uses partitions of length n.
• SpectrogramArray[list, n, d] uses partitions with offset d.
• SpectrogramArray[list, n, d, wfun] applies a smoothing window wfun to each partition.
• SpectrogramArray[list, n, d, wfun, m] pads partitions with zeros to length m prior to the computation of the transform.
• SpectrogramArray[audio, ...] returns spectrogram data of audio.
• SpectrogramArray[video] returns the spectrogram data of the first audio track in video.

Examples

Get spectrogram data from a signal:

data = Table[Sin[100 t] + Sin[200 t], {t, 0, 1, 0.001}];
SpectrogramArray[data]

With specified partition length:

SpectrogramArray[data, 128]

Apply a Hamming window:

SpectrogramArray[data, 256, 64, HammingWindow]

Please visit the official Wolfram Language Reference for more details.