| Quantitative method | Qualitative method: landuse designation | Acoustical quality |
---|
Typical noise levels |
---|
L95/dB(A) | Leq/dB(A) |
---|
day | 25 | 35 | Areas designated for nature conservation | Only natural sounds being heard, like rustling of leaves |
night | 25 | 35 |
day | 40 | 50 | Areas designated for hospitals, sanatoria, homes for the aged, 'soft' recreation | Very quiet rural environment |
night | 30 | 40 |
day | 45 | 55 | Purely residential areas | Quiet suburban neighbourhood |
night | 30 | 40 |
day | 55 | 65 | Mixed residential areas with some light industry and civic centres | Typical urban noise situation |
night | 40 | 50 |
day | 65 | 75 | Predominantly industrial areas | Very noisy, unfit for permanent human habitation |
night | 65 | 75 |