A tangle of overlapping waves hides simple frequencies inside. Watch the DFT untangle a messy signal into sharp spectral peaks.
DFT Spectrum AnalysisLive
finding hidden frequencies
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The Discrete Fourier Transform decomposes a signal into its constituent frequencies. A messy time-domain wave becomes clean peaks in the spectrum — the mathematics behind audio equalizers, MRI, and Wi-Fi. Educational tool.
Reading this result: Two clean sinusoids produce two crisp peaks at their frequencies; peak height tracks amplitude, which is exactly how an equalizer reads a signal.
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How it works
The Discrete Fourier Transform expresses a sampled signal as a sum of sinusoids, revealing which frequencies are present and how strong. It powers spectrum analyzers, audio equalizers, image compression, and countless measurement tools. Educational tool.
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The math, the assumptions, real-world uses, or a code translation — explained for this exact simulation.
Yes. DFT Spectrum Analysis runs entirely in your browser using your device's own compute, so local use is free forever. You only pay Compute Tokens if you scale a job to the cloud.
Do I need to install anything?▾
No. Everything runs client-side in a modern browser — no downloads, no license, no account required to start.
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How accurate are the results?▾
The solver uses established numerical methods, but results are for research and educational purposes and should be validated against experiment or professional review before you rely on them.