stft

1 free lesson tagged stft across Math. Each one is a short sequence of focused steps with narration and a five-question quiz at the end — take them in any order, no signup required.

Math

intermediate

Reading a Spectrum Without Fooling Yourself

A spectrum shows you artefacts of the analysis alongside the signal, and telling them apart is a learnable skill. This lesson covers spectral leakage, what windows buy and what they cost, why zero-padding does not add resolution, and the hard trade a spectrogram forces between knowing when and knowing what.

10 steps·~15 min

Reading a Spectrum Without Fooling Yourself

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