Démarrer audio
Tap Lecture or press Space. Your browser requires a gesture before audio can play.
Spectrum Analyzer
Live FFT visualization with numeric level and peak frequency.
Microphone required after you click Démarrer. Audio is processed locally — nothing uploaded.
Level
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Peak
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Canvas shows relative amplitude by frequency bin.
How to use
Adjust settings
Use sliders and controls to set frequency, volume, and waveform. Changes apply in real time.
Export or share
Télécharger a WAV file or copy a share link. All processing stays on your device.
Frequently asked questions
Does this work without a microphone?
This tool analyzes mic input.