Decibel Meter

This online decibel meter uses your device's microphone to measure sound levels in real-time. Decibels (dB) are a logarithmic unit used to measure sound intensity.

Features

• Real-Time Monitoring: Continuously measure sound levels from your microphone
• Visual Feedback: Color-coded meter bar showing sound intensity
• Statistics Tracking: Track minimum, maximum, average, and peak levels
• Advanced Calibration: Calibrate measurements against reference sound levels for improved accuracy
• Persistent Settings: Save calibration settings to your browser for consistent measurements
• Reference Chart: Compare measurements to common sound sources
• Client-Side Processing: All measurements happen in your browser

How to Use

1. Click "Start Measuring" and allow microphone access when prompted
2. The meter will display the current sound level in decibels
3. Watch the visual bar to see sound intensity changes
4. View statistics for min, max, average, and peak levels
5. Click "Stop" to pause measurements or "Reset Stats" to clear data

Understanding Decibels

The decibel scale is logarithmic, meaning each 10 dB increase represents a tenfold increase in sound intensity:

• An increase of 10 dB is perceived as roughly twice as loud
• 0 dB represents the threshold of human hearing
• Normal conversation is around 60 dB
• Hearing damage can occur with prolonged exposure above 85 dB
• 120 dB is the threshold of pain