Short-time Fourier transform

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Notion

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Science and technology

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What Wikipedia says

The short-time Fourier transform (STFT) is a Fourier-related transform used to determine the sinusoidal frequency and phase content of local sections of a signal as it changes over time.

Excerpt from the Wikipedia article “Short-time Fourier transform”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Aquegg, Public domain, via Wikimedia Commons.