Decibel Noise Meter
分贝噪音影音媒体免费工具本地处理
Decibel meter measuring ambient noise via your microphone with a live level curve — a reference for noise assessment.
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How to Use
- Grant microphone/screen permission on first use
- Press start to measure or record
- Stop when done, then replay and download
- Audio/video is handled natively in your browser — nothing is uploaded
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FAQ
Is any data uploaded?
No, all processing happens locally; nothing you type or upload ever reaches a server.
Are results accurate?
Standard public formulas and parameters are used; defer to official sources for policy rates.
Which browsers are supported?
Modern Chrome, Edge, Safari and Firefox; camera/mic features require permission grants.