What does Noise Level Meter check?
Estimate microphone noise floor and room noise level in dBFS. It is designed for users checking headset microphones, laptop mics, USB mics, and audio input quality.
Noise Level Meter
Estimate microphone noise floor and room noise level in dBFS.
Noise Level Meter helps users checking headset microphones, laptop mics, USB mics, and audio input quality. It focuses on input permission, volume and peaks, noise floor, frequency and channel behavior and runs directly in the browser.
What this page checks
- input permission
- volume and peaks
- noise floor
- frequency and channel behavior
- Noise Level Meter result interpretation
How to use Noise Level Meter
- Open Noise Level Meter on the same browser and device you want to diagnose.
- Microphone pages require browser microphone permission and analyze the signal locally.
- Run the visible microphone test controls and watch the live result area update before judging the hardware.
- Repeat the test once or twice, then compare related InputLab tools if the microphone behavior looks inconsistent.
How to read the result
Noise Level Meter is most useful when you read the result as a practical browser diagnostic. Input gain, noise suppression, selected device, browser processing, and room noise affect the signal. A repeated pattern across multiple runs is more meaningful than one isolated spike, missed event, or visual artifact.
Privacy and permissions
Microphone pages require browser microphone permission and analyze the signal locally. Tests are designed to run locally in the browser, with permissions controlled by the browser.
Related InputLab tools
Noise Level Meter FAQ
Is Noise Level Meter accurate?
Input gain, noise suppression, selected device, browser processing, and room noise affect the signal.
Do I need to install anything for Noise Level Meter?
No. Microphone pages require browser microphone permission and analyze the signal locally.
Are results uploaded to a server?
The microphone signal is analyzed locally in the browser. InputLab does not need to upload your audio stream.
What should I try if the result looks wrong?
Check browser focus, device selection, operating-system settings, and then run related microphone tools to separate a device problem from a browser or permission issue.