Loudspeaker system and method for producing synthesized directional sound beam

US8238588B2 · kind B2 · utility

Assignee

• Meyer Sound Laboratories, Incorporated · US

Inventors

• John D. Meyer · Tracy, US
• Perrin Meyer · Albany, US
• Roger Schwenke · Alameda, US
• Alejandro Antonio Garcia Rubio · Berkeley, US
• Paul Kohut · Napa, US
• Richard D. Herr · Fort Lauderdale, US
• Jon M. Arneson · Napa, US
• Peter C. Soper · Berkeley, US

Key dates

• Filing date: Jan 28, 2009
• Grant date: Aug 7, 2012
• Expiry date: Nov 16, 2030

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04R1/403
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A loudspeaker system has a plurality of relatively small transducer elements configured in a closely spaced transducer array such that their acoustic outputs combine to produce a focused beam of sound in front of the array that is substantially uniform about the beams radiation axis. The transducer array lies in a plane and has a perimeter that approximates a circle, and will have fill-factor with respect to a circle circumscribing the array of at least approximately 70%. In one variation of the loudspeaker system, the transducer array is constructed in smaller transducer array modules that are operatively fitted together to produce a larger array.