The large anechoic chamber is designed as research facility to absorb acoustic reflections. In this way it simulates free-field radiation conditions as if no walls were present, thus allowing an acoustic measurement to be conducted with minimal interference from room effects.

With working dimensions of 8.71 x 5.66 x 5.74 m, the room is anechoic down to approximately 80 Hz and large enough to handle a variety of experiments. Within the chamber there are several accommodations, including:

  • Two-dimensional automated scanning/measurement acquisition system (third dimension of automated motion is currently under construction)
  • Large hemispherical microphone array with automated rotating stand for high-resolution three-dimensional directivity measurements
  • Overhead measurement boom with automated rotation/aquisition