How it works

This tool uses the Web Audio API to capture and analyze 5 seconds of microphone input. It creates an AnalyserNode to perform real-time FFT analysis, measuring background noise levels (RMS), frequency response range, signal-to-noise ratio, and audio clipping. The quality score is calculated from these metrics. Audio processing and echo cancellation are disabled to get raw microphone data. All analysis runs locally in your browser — no audio is recorded or transmitted.