开始 audio
Tap 播放 or press Space. Your browser requires a gesture before audio can play.
Audio Level Meter
Microphone input level in dBFS — tap 开始 to grant permission.
Microphone access starts only when you click 开始. Levels are dBFS, not calibrated SPL.
—
—
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
Is this a calibrated SPL meter?
No. Browser mic levels are relative (dBFS).