The loudspeaker array is mounted in a semi-anechoic room (3 x 3 m). It consists of 91 loudspeakers, arranged in a spherical order, and 2 subwoofers. This high number of loudspeakers enables many possible demonstration, for instance:

  • Present sound sources from any given directions by controlling each loudspeakers separately. One possible method is by using VBAP (Vector Base Amplitude Panning).
    Example: Ambient situation like birds tweeting around the listener, rain is dropping on a virtual roof above the listeners head, thunderstorm is slowly coming over the sky....
  • Present moving sound sources.
    Example: A fly is flying around the listener.
  • Demonstrate the listener how directional hearing can be important for everyday's life ("Cocktail Party Effect").
    Example: Some listeners are talking from the same direction. The listener is not able to understand a full sentence from any of them. Once they start moving to different positions it will be much easier to focus on one of them separately, and to understand the spoken sentence.
  • Present different types of rooms and their corresponding properties: Since the loudspeaker array studio is semi-anechoic the room does not add any reverbing effect. This allows to artificially filter the sound signal by adding the early reflections (mirror sources) and diffuse reverb (FDN) effect of any given room.
    Example: A guitar is being played without any reverberations. After half the track some room effect is added and the listener has the impression of suddenly being in small reverbing room.
  • Unusual positions: The listener can be virtually positioned in any situation by placing sound sources around the listening positions.
    Example: Enjoying a classical concert from the conductor's view.