Directional loudspeaker
AssigneeCommunity Light and Sound, Inc.
InventorBruce Howze
Life of this patent
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Abstract
A loudspeaker having uniform horizontal sound dispersion characteristics in a design angle and minimal sound dispersion vertically comprises multiple sound energy sources forming an elongated line source of sound energy, and a waveguide having an elongated input portion coextensive with the elongated line source and substantially planar side walls defining an expanding cross-section from the input portion to an exit aperture, whereby sound dispersion in a direction parallel to the line source is minimized. The waveguide expands substantially only in a direction perpendicular to the line source, the rectangular input portion having substantially the same dimension as the exit aperture measured in the direction parallel to the line source.
Claims14
A loudspeaker, having controlled planar sound dispersion characteristics, comprising:
- a plurality of individual electroacoustical drivers, having horns expanding in cross-section, said horns having exit apertures aligned and joined to form an elongated line source, defining an axis of projection for sound energy;
- and,
- a waveguide having an elongated input portion corresponding to and parallel with said line source and side walls defining an expanding cross-section from said input portion to an exit aperture of said waveguide, whereby sound dispersion off said axis is minimized.
Dependencies are inferred from the claim text.