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Transmission line for planar waves

  • US 5,373,564 A
  • Filed: 10/02/1992
  • Issued: 12/13/1994
  • Est. Priority Date: 10/02/1992
  • Status: Expired due to Fees
First Claim
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1. A loudspeaker transmission line (TL) for a driver comprising a series of interdigitated sound reflecting chambers (14) having sound reflecting components in a housing and with a series of parallel median walls (16) dividing said chambers and extending between respective chambers alternately;

  • pairs of dihedral reflectors (24) reflectively opposed at ends of said parallel median walls (16) for effecting multiple parallel reversing reflections of sound waves;

    each of said parallel median walls having a free edge (48);

    each said free edge extending toward the vertex of a respective dihedral reflector pair;

    an acoustic outlet (44) at the end of said transmission line (TL);

    wherein said pairs of dihedral reflectors are related to effect planar wave transmission from the rear of said driver to said outlet at a predetermined frequency which is a fraction of the resonant frequency of the driver.

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