Sound Levels
Explanation of Codes Table
Intensity of Signals
| 1. Very soft to soft | 50 dB |
| 2. Average | 51 - 60 dB |
| 3. Loud | 61 - 80 dB |
| 4. Very loud | 81 - 100 dB |
| 5. Extremely loud | > 100 dB |
Examples of Intensity of Signals
| A whispered voice | < 50 dB |
| Normal conversation | 51 - 60 dB |
| Washing machine or dryer | 61 - 80 dB |
| Vacuum cleaner | 81 - 100 dB |
| Bell to change classes | > 100 dB |
