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METHOD AND SYSTEM FOR REDUCING ACOUSTICAL REVERBERATIONS IN AN AT LEAST PARTIALLY ENCLOSED SPACE

  • US 20110129096A1
  • Filed: 11/30/2009
  • Published: 06/02/2011
  • Est. Priority Date: 11/30/2009
  • Status: Active Grant
First Claim
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1. A method of increasing the intelligibility of an audio broadcast in an at least partially enclosed space from at least one amplified audio source, the method comprising:

  • receiving an incident audio wavefront from the amplified audio source at a first position in the at least partially enclosed space;

    generating a cancelling audio wavefront having a magnitude substantially equal to the magnitude of incident audio wavefront and a phase substantially opposite to the phase of the incident audio wavefront; and

    broadcasting the cancelling audio wavefront at a second position in the at least partially enclosed space, the second position being adjacent to a reflective surface of the at least partially enclosed space and downstream of the first position relative to the audio source, thereby to attenuate the incident audio wavefront substantially at or near the reflective surface in order to reduce reverberations of the incident audio wavefront.

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