SUMMARY

This extension displays the current environmental noise level in decibels (dB). The extension can be used to detect harmful environmental noises or to protect your hearing.

This extension offers a popup view to precisely measure the sound pressure level (SPL) all around you by sampling your microphone's raw data using an AudioWorkletProcessor node. The extension displays RMS data in dB compared to a reference volume level. It supports a graphical view to see the last 300 samples in a graph. It also shows statistical results such as min, average, and max values of the recorded samples.

Features:
- Indicates decibel level
- Display the current noise reference
- Display min/avg/max decibel values
- Display decibel by graph

The latest version of Sound Level Meter is available on the Chrome web and is currently being used by 3,000 active users. The initial version was launched on 2021-04-05.

HOW TO INSTALL Sound Level Meter FROM A CRX FILE

1. Download Sound Level Meter CRX file
2. NOTE: Sometimes the browser may block downloading / installing CRX file from outside the Chrome Web Store. If so, you may need to download the ZIP file instead
3. In the URL bar, go to chrome://extensions
4. Enable Developer mode

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