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Waveguide electroacoustical transducing

  • US 8,351,629 B2
  • Filed: 02/21/2008
  • Issued: 01/08/2013
  • Est. Priority Date: 02/21/2008
  • Status: Active Grant
First Claim
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1. A loudspeaker assembly, comprising:

  • an acoustic waveguide;

    an acoustic driver mounted to the waveguide so that a first surface radiates sound waves into the waveguide so that the sound waves are radiated from the waveguide and so that a second surface radiates sound waves to the environment through a path that does not include the waveguide; and

    a closed acoustic volume acoustically coupled to the acoustic waveguide by an opening in the waveguide, the opening in the waveguide forming a coupling volume having a dimension determined by a thickness of a wall of the waveguide wherein the opening is positioned and the acoustic volume is dimensioned to increase the amplitude of the sound waves radiated from the acoustic waveguide at a wavelength at which radiation from the waveguide and radiation from the second surface of the acoustic driver destructively interfere.

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