— Under construction —
Anechoic Chamber
Dimensions | 10 m x 10 m x 8 m (800 m3) |
Year | 1969 |
Builder | Grünzweig & Hartmann |
Background noise level | 17 dBA |
Length of wedges | 1 m |
Operational frequency range | 75 Hz – 10 kHz (with mean reflection coefficient < 0.1, which is equivalent to sound absorption > 99 %) |
Mounting | 4 sets of steel strings, each set comprises 8 double springs; the resonance frequency is 10 Hz |
Weight | 400 tons |