InverseShortTimeFourier

InverseShortTimeFourier[input] reconstructs the signal from short-time Fourier data.

• InverseShortTimeFourier[input, n] assumes the spectrogram data was computed with partitions of length n.
• InverseShortTimeFourier[input, n, d] assumes partitions with offset d.
• InverseShortTimeFourier[input, n, d, wfun] assumes a smoothing window wfun was applied to each partition.

Examples

Reconstruct signal from STFT:

signal = Table[Sin[2 Pi 440 t], {t, 0, 1, 1/8000}];
stft = ShortTimeFourier[signal];
InverseShortTimeFourier[stft]

With partition length:

InverseShortTimeFourier[stft, 256]

With offset and window:

InverseShortTimeFourier[stft, 256, 64, HannWindow]

Please visit the official Wolfram Language Reference for more details.