5 Sec. |
2.5 |
1.25 |
0.63 | 0.31 |
Large Churches |
Factories and Gymnasiums |
Small Churches |
School Rooms and Hospitals |
Art Galleries and Homes |
Offices and Lecture Halls |
Department Stores |
Radio and TV Studios |
Frequency | 125Hz | 250Hz | 500Hz | 1kHz | 2kHz | 4kHz |
Seconds | ||||||
Absorption |