The acoustics laboratory has a wide range of rooms with different acoustic properties. The large 65 m2 Anechoic room 1 is among the most used rooms in the laboratory. The walls, ceiling and floor are all covered with sound absorbing wedges so that reflections are avoided down to approximately 65 Hz. 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 room is a double-box construction made of concrete. The inner box 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. The room is controlled via Control room S.
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