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On Large Multiactuator Panels for Wave Field Synthesis Applications
Wave Field Synthesis (WFS) is a spatial sound rendering technique that generates a true sound field using loudspeaker arrays. Multiactuator Panels (MAPs) are an alternative technology to the dynamic piston loudspeakers, based on the distribute mode operation. Because of its low visual profile and negligible vibration of the panel, MAPs are very suitable for WFS reproduction. However, the size of current prototypes does not allow its use for real immersive environments in which loudspeaker must be integrated as walls or as projection screens. In addition, the extra area of a large panel can be used to accommodate extra exciters with which to generate sound fields at another elevation levels. In this paper, a large MAP prototype is presented that has been designed and built to fulfill the requirements of immersive audio aplications. It represents a step forward in the applications of MAPs for immersing scenarios. The panel size enhances its acoustic behaviour in the low frequency range. Also, it can be employed for relative large projection screens for videoconferencing and for virtual reality.
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