ROOM AND PROGRAM RESPONSIVE LOUDSPEAKER SYSTEM
First Claim
1. A method for adjusting sound directional properties of a loudspeaker array, comprising:
- measuring, by a processor, the acoustic properties of a room containing the loudspeaker array;
computing first sound directional properties for the room according to the measured acoustic properties;
measuring, continually by the computer over the playing time of sound program content to be emitted by the loudspeaker array, audio characteristics of the sound program content;
computing, continually by the computer over the playing time of the sound program content, second sound directional properties of the sound program content for the loudspeaker array according to the measured audio characteristics; and
playing, through the loudspeaker array, the sound program content according to the first and second sound directional properties.
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Accused Products
Abstract
A home audio system that includes an audio receiver and one or more loudspeaker arrays is described. The audio receiver measures the acoustic properties of the room in which the loudspeaker arrays reside and the audio characteristics of the sound program content to be played through the loudspeaker arrays. Based on these measurements, the audio receiver assigns a directivity ratio and potentially various beam patterns to one or more segments of the sound program content. The assigned directivity ratio is used by the receiver to play the segment of the sound program content through the loudspeaker arrays. Other embodiments are also described.
303 Citations
25 Claims
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1. A method for adjusting sound directional properties of a loudspeaker array, comprising:
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measuring, by a processor, the acoustic properties of a room containing the loudspeaker array; computing first sound directional properties for the room according to the measured acoustic properties; measuring, continually by the computer over the playing time of sound program content to be emitted by the loudspeaker array, audio characteristics of the sound program content; computing, continually by the computer over the playing time of the sound program content, second sound directional properties of the sound program content for the loudspeaker array according to the measured audio characteristics; and playing, through the loudspeaker array, the sound program content according to the first and second sound directional properties. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An audio receiver for driving a loudspeaker, comprising:
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a room acoustics unit for measuring acoustic properties of a room using acoustic reverberation testing and computing a first directional ratio for the room according to the measured acoustic properties of the room; a content characteristics unit for measuring audio characteristics of a segment of sound program content and computing a second directional ratio for the loudspeaker according to the measured audio characteristics of the segment of the sound program content; and a driver unit for playing the segment of the sound program content through the loudspeaker according to the first and second directional ratios. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. An apparatus for sound directionality adjustment, comprising:
article of manufacture having a machine-readable storage medium that stores instructions which, when executed by a computing device, cause the computing device to; measure acoustic properties of a room containing a loudspeaker array, compute first directional properties for the loudspeaker array according to the measured acoustic properties, measure, continually over the playing time of sound program content to be emitted by the loudspeaker array, audio characteristics of the sound program content, and compute, continually over the playing time of the sound program content, second directional properties of the sound program content for the loudspeaker array according to the measured audio characteristics. - View Dependent Claims (20, 21, 22, 23, 24, 25)
Specification