| Noise Source | Decibels Experienced |
| A quiet home................. | 20 |
| Normal talking................. | 40 |
| A ringing phone............. | 60 |
| An air conditioner.......... | 75 |
| Street noise.................... | 90 |
|
| |
| Honking of horns.......... | 100 |
| Loud music................... | 100 |
| Subway train............... | 120 |
| Jack hammers.............. | 120 |
| Jet taking off................. | 140 |
|