Acoustic Anechoic Room, large

    Facilitet: Testfacilitet

    • Placering

      Frederik Bajersvej 7B

      4-111

      Aalborg Øst

      9220

      Danmark

    Beskrivelse

    The large 65 m2 anechoic room is among the most used rooms in the laboratory.
    Many acoustical measurements necessitate the use of an anechoic room, e.g. measurements of loudspeakers and microphones. The room is also used for listening experiments.

    The walls, ceiling and floor are all covered with sound absorbing wedges so that reflections are avoided. Between the wedges inside the room there is 6.2 m x 5.0 m x 5.8 m, lower cut off frequency approximately 65 Hz.

    The room is a double-box construction made of concrete. The inner box (9.1m x 7.9m x 8.7m) is placed on a rubber suspension in order to insulate the room against noise and vibrations from the surroundings. Even when the air-conditioning is on there is no audible background noise in the room.

    Fingeraftryk

    rooms
    acoustics
    wedges
    boxes
    air conditioning
    ceilings
    loudspeakers
    background noise
    microphones
    rubber
    cut-off
    vibration