Title:
REFLECTIVE LOUDSPEAKER ARRAY
Document Type and Number:
WIPO Patent Application WO2006096801
Kind Code:
A3
Abstract:
A reflective loudspeaker array is cooperatively operable with an acoustically reflective planar surface to provide a constructive combination of direct and reflected sound waves that produces a uniform sound field. The uniform sound field provides a controlled sound field in the vertical and horizontal direction, and also provides uniformity from distances close to the reflective loudspeaker array to far way. The direct and reflected sound waves are advantageously and constructively combinable to generate a focused beamwidth of sound waves. The reflective loudspeaker array includes a plurality of loudspeakers coupled to a surface of the reflective loudspeaker array. The surface may be formed to include at least one curve with a radius of curvature. The reflective loudspeaker array may be placed adjacent an acoustically reflective planar surface such that a frontal plane of a loudspeaker adjacently located closest to the acoustically reflective planar surface is aligned perpendicularly, and a frontal plane of a loudspeaker spaced away from the acoustically reflective planar surface is not aligned perpendicularly.
Inventors:
KEELE D BROADUS JR (US)
BUTTON DOUGLAS J (US)
BUTTON DOUGLAS J (US)
Application Number:
PCT/US2006/008365
Publication Date:
December 21, 2006
Filing Date:
March 08, 2006
Export Citation:
Assignee:
HARMAN INT IND (US)
KEELE D BROADUS JR (US)
BUTTON DOUGLAS J (US)
KEELE D BROADUS JR (US)
BUTTON DOUGLAS J (US)
International Classes:
H04R1/20; G10K11/28; G10K11/34; G10K11/35; H04R3/12; H04R27/00
Domestic Patent References:
| WO2004071129A2 | 2004-08-19 |
Foreign References:
| EP1199907A2 | 2002-04-24 | |||
| US5742693A | 1998-04-21 | |||
| EP1422969A2 | 2004-05-26 | |||
| EP0386846A1 | 1990-09-12 | |||
| US20050025318A1 | 2005-02-03 |
Other References:
KEELE D B: "FULL-SPHERE SOUND FIELD OF CONSTANT-BEAMWIDTH TRANSDUCER (CBT) LOUDSPEAKER LINE ARRAYS", JOURNAL OF THE AUDIO ENGINEERING SOCIETY, AUDIO ENGINEERING SOCIETY, NEW YORK, NY, US, vol. 51, no. 7/8, July 2003 (2003-07-01), pages 611 - 624, XP001178701, ISSN: 1549-4950
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