Show HN: Online Sound Decibel Meter

Category: devtools

Tags: audio-analysis, web-audio-api, health-tool

Score: 5.7/10 (Innovation: 4, Technical: 6, Documentation: 9, Utility: 7)

A browser-based sound level meter that uses the Web Audio API and FFT analysis to measure real-time noise levels via the device's microphone. It's interesting because it performs all processing locally with no installation or data transmission, and provides detailed calibration and educational content about sound measurement.

Target audience: general-public, health-conscious-users, audio-enthusiasts

Repository: https://soundmeterx.com/

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