Multiple driver electroacoustical transducing
AssigneeBose Corporation
InventorsChristopher B. Ickler, Morten Jorgensen, Kenneth D. Jacob, Seiji Kawakami
Life of this patent
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Abstract
A loudspeaker system has a number of loudspeaker driver assemblies operative over a number of octaves in the audio frequency range. Support structure supports the loudspeaker driver assemblies in fixed substantially contiguous relationship substantially along an arcuate surface with each of the driver assemblies oriented in a prescribed direction and coacting to illuminate with sound a predetermined solid angle centered at the loudspeaker system substantially uniformly over said number of octaves.
Claims14
A loudspeaker system comprising
- a plurality of at least three loudspeaker driver assemblies each operative over a plurality of octaves in the audio frequency range and characterized by an axis and a span s,
- support structure supporting said loudspeaker driver assemblies in fixed substantially contiguous relationship substantially along an arcuate surface of predetermined width with the axis of each of said driver assemblies having a component perpendicular to and a component parallel to said arcuate surface with each of said driver assemblies oriented in a prescribed direction and coacting to illuminate with sound a predetermined solid angle centered at the loudspeaker system substantially uniformly over said plurality of octaves.
A loudspeaker system in accordance with claim I,
- wherein the relative positioning of said driver assemblies establishes said predetermined solid angle over a frequency range in which .lambda. is greater than about 1 but smaller than about 21,
- the curvature of said arcuate surface establishes said solid angle over a frequency range where .lambda. is greater than about 1/2 but smaller than about 1,
- and the direction in which each of said driver assemblies is pointed establishes said solid angle for the frequency range where .lambda. is substantially smaller than about s,
- wherein .lambda. is the wavelength of a spectral component, l is the length of the array, and s is the span across a loudspeaker driver assembly.
Dependencies are inferred from the claim text.