Passive Directional Acoustic Radiating
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Accused Products
Abstract
An acoustic apparatus, including an acoustic driver, acoustically coupled to a pipe to radiate acoustic energy into the pipe. The pipe includes an elongated opening along at least a portion of the length of the pipe through which acoustic energy is radiated to the environment. The radiating is characterized by a volume velocity. The pipe and the opening are configured so that the volume velocity is substantially constant along the length of the pipe.
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Citations
52 Claims
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1-39. -39. (canceled)
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40. An acoustic apparatus, comprising:
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an acoustic driver, acoustically coupled to a pipe to radiate acoustic energy into the pipe, the pipe comprising an elongated opening along at least a portion of the length of the pipe through which acoustic energy is radiated to the environment, the opening lying in a plane that intersects an axis of the acoustic driver at a non-zero, non-perpendicular angle relative to the axis of the acoustic driver, and acoustically resistive material in the elongated opening, wherein the geometry and dimensions of the elongated opening, the non-zero non-perpendicular angle, and the acoustic resistance of the acoustically resistive material are configured so that the acoustic apparatus directionally radiates acoustic energy of wavelengths at least two times the diameter of a radiating surface of the acoustic driver.
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41. (canceled)
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42. An acoustic apparatus, comprising:
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an acoustic driver, acoustically coupled to a pipe to radiate acoustic energy into the pipe; and acoustically resistive material in all openings in the pipe so that all acoustic energy radiated from the pipe to the environment from the pipe exits the pipe through the resistive opening.
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43. An acoustic apparatus, comprising:
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an acoustic driver, acoustically coupled to a first end of a pipe to radiate acoustic energy into the pipe, the pipe comprising an elongated opening along at least a portion of the length of the pipe through which acoustic energy is radiated to the environment, wherein the pipe is configured so that a cross sectional area decreases from the first end to a second end so that there are no acoustically reflective surfaces at the second end. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52)
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Specification