 |
| noise rating: 24 phrases in 15 subjects |
| Acoustics | 5 |
| Aviation | 1 |
| Construction | 3 |
| Ecology | 2 |
| Energy industry | 1 |
| Household appliances | 1 |
| Medical | 1 |
| Metrology | 2 |
| Military | 1 |
| Natural resourses and wildlife conservation | 1 |
| Occupational health & safety | 2 |
| Technology | 1 |
| Telecommunications | 1 |
| Telephony | 1 |
| Wood processing | 1 |