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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