Decibels Explained
Understanding Sound Measurement
Learn About DecibelsThe decibel (dB) is the standard unit for measuring sound intensity. Its logarithmic scale matches how our ears perceive loudness, making it ideal for describing everything from whispers to jet engines.
Common Sound Levels
| Source | Level (dB) |
|---|---|
| Breathing | 10 dB |
| Whisper | 30 dB |
| Normal conversation | 60 dB |
| Vacuum cleaner | 70 dB |
| Lawn mower | 90 dB |
| Rock concert | 110 dB |
| Jet takeoff (100m) | 130 dB |
Conclusion
Decibels provide a practical way to measure sound that aligns with human perception. Understanding the logarithmic nature helps interpret what dB values actually mean—a 10 dB increase sounds twice as loud, and sounds above 85 dB can damage hearing with prolonged exposure.