Electrical engineering toolbox
FFT / Audio Spectrum Analyzer
Real-time Hann-windowed audio spectrum for transformer buzz, motor harmonics, and noise characterization. Linear/log axis, averaging, peak-hold, PNG/CSV export of bins. No raw audio leaves the device.
About this calculator
Real-time Hann-windowed audio spectrum for transformer buzz, motor harmonics, and noise characterization. Linear/log axis, averaging, peak-hold, PNG/CSV export of bins. No raw audio leaves the device.
For design, installation, or safety decisions, verify assumptions against the applicable code edition, equipment documentation, and site requirements.
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