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Details
Inventors: Suzuki, Hitoshi; Hara, Kozo; Koga, Shiro; Morita, Shigeru;
Assignee: Mitsubishi Denki Kabushiki Kaisha (Tokyo, JP)
Primary Examiner: Isen; Forester W.
Assistant Examiner:
Attorney, Agent or Firm: Staas & Halsey

The present invention includes a loudspeaker system in which sound radiation axes of two speakers in a single loudspeaker unit form an angle with respect to each other in a horizontal plane to increase the size of a listening area. The horizontal angle can be formed by orienting the sound axes of speakers in the loudspeaker unit at an angle in the range of 15 to 45 degrees from each other. The system also includes a phase adjustment system which adjusts the phase of the speakers in each loudspeaker unit so that the phase of the sound from each speaker in each loudspeaker unit is properly adjusted throughout the increased listening area to provide increased sound presence or spread.

DETAILED DESCRIPTION It is an object of the present invention to provide a loudspeaker system which increases the size of the listening area where the sound from a pair of speakers overlaps.
It is another object of the present invention to increase the best listening in front of a television set so that an increased area will be provided in which sound image and picture image will be properly localized.
It is an additional object of the present invention to increase the sound spread or presence produced by a speaker system.
The above objects can be accomplished by a loudspeaker system in which the sound radiation axes of two speakers in a single loudspeaker unit form an angle with respect to each other in a horizontal plane.
The use of two speakers in a single loudspeaker unit that are angled with respect to each other increases the area of the sound cone produced by the speaker unit.
when two speaker units with the broadened sound cone are used, the best listening area, where the cones overlap, is increased dramatically.
This angle between the speakers in a single unit can be formed by orienting the sound axis of each speaker in the loudspeaker unit at an angle in the range of 15 to 45 degrees from each other.
The system also includes a phase adjustment system which adjusts the phase of the speakers in each loudspeaker unit so that the phase of the sound from the loudspeaker unit is properly adjusted throughout the increased listening area, so that the sound spread or presence of the sound is increased along with the increase in the size of the best listening area.
These together with other objects and advantages which will be subsequently apparent, reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout.



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