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Frequency Analyzer

Real-time audio frequency analyzer for your microphone. Visualize the spectrum live with FFT in your browser.

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Frequency Analyzer

Real-time audio frequency spectrum analyzer running entirely in your browser. Uses the Web Audio API's AnalyserNode with a Fast Fourier Transform to visualize the frequencies present in your microphone input.

Features

Live microphone capture
2048-bin FFT spectrum
Color-coded frequency bars
60 FPS visualization
Fully private — audio never leaves your device

Use cases

Audio engineering and mixing
Musical instrument tuning
Vocal range analysis
Room acoustics inspection
Education about sound and signal processing