| Common Sounds | dB value |
| Threshold Of Hearing. | 0 |
| Whisper. | 13 |
| Quiet Conversation. | 20 |
| Private Office. | 30 |
| Quiet Radio. | 40 |
| Average Business Office. | 50 |
| Recommended Limit For Quiet Office Environment. | 55 |
| Normal Conversation. | 60 |
| Recommended Limit For Normal Office Environment. | 70 |
| Amplified Speech, Road Traffic, Loud Music. | 80 |
| Recommended Limit For Factories. | 85 |
| 25 Piece Orchestra, Shouting Voice 1m. | 90 |
| Continuous Noise At This Level Is Dangerous To Hearing. | 95 |
| Low Flying Aircraft, Noisy Plant. | 100 |
| Hard Rock Band, Noisy Plant. | 115 |
| Jet Aircraft Taking Off 20m Distance. | 120 |
| Jack Hammer 1m Distance. | 125 |
| Threshold Of Pain | 130 |