Live Room Noise & Decibel (dB) Sound Meter

Measure environmental sound and noise levels in real-time using your device's microphone and the Web Audio API. Identify quiet study spaces (<45 dB) vs hazardous noise levels (>85 dB).

Interactive Live Room Noise & Decibel (dB) Sound Meter
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Formula & Calculation Methodology

RMS sound pressure analysis: dB = 20 * log10(V_rms / V_ref) scaled to standard acoustic range.

Step-by-Step Worked Example

Microphone Stream: Active | Measured Level: 38 dB

  1. Fast Fourier Transform (FFT) analysis on audio buffer
  2. Average RMS Amplitude: Scaled to 38 dB SPL
  3. Acoustic Classification: Quiet Room (Ideal for study and deep sleep)
Result: Ambient Sound: 38 dB (Quiet Study Environment)

Frequently Asked Questions

What is considered a safe room noise level?

A quiet bedroom or study room is typically 30-40 dB. Normal conversation is around 60 dB. Continuous exposure to noise above 85 dB can cause hearing fatigue and damage.

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