开始 audio
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Spectrum Analyzer
Live FFT visualization with numeric level and peak frequency.
Microphone required after you click 开始. 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
下载 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.