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The Analysis Window in a Short-Time Fourier Transform

A voice is not stationary, so the transform is applied to short slices. The window is where the analyst's choices enter the measurement, and it is the mechanism behind the resolution trade-off taught next. Separating window from trade-off keeps each node to one thing.

Questions this Concept answers

Why is a recording of speech cut into short slices before it is transformed?

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Windowing to Reduce Spectral Leakage in Signal Processing

Windowing is a signal-processing technique that multiplies a finite time-domain signal segment by a tapering function before Fourier analysis, in order to reduce spectral leakage — the spreading of e…