Engineering Alpha

Engineering Alpha

Signal Processing for Time Series: Starting With STFT

Signal Processing Topics for Time Series Analysis

Sofien Kaabar, CFA's avatar
Sofien Kaabar, CFA
Jul 21, 2026
∙ Paid

Most time series look like noise pretending to be information.

Prices jump. Economic data gets revised. Volatility wakes up at inconvenient moments. Indicators lag just enough to make you question your career choices. This is where signal processing becomes useful.

Signal processing is the art of taking messy data and asking:

“Is there structure hiding ins…

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