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US 2011/0216924 A1Published application
Multi-element directional acoustic arrays
AssigneeBose Corporation
InventorsWilliam Berardi, Hilmar Lehnert
Life of this patent
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Abstract
An audio system that may be implemented in a television, that includes a plurality of directional arrays. The arrays may include a common acoustic driver and may be spaces non-uniformly.
Claims15
An audio system, comprising:
- at least three acoustic drivers, arranged substantially in a line, and separated by a non-uniform distance;
- a first interference directional array, comprising
- a first subset of the plurality of acoustic drivers, for directionally radiating one of a left channel audio signal and a right channel audio signal;
- and
- signal processing circuitry to process audio signals to the first subset of acoustic drivers so that radiation from each of the acoustic drivers interferes destructively so that radiation in a direction toward a listening location is less than radiation in other directions;
- and
- a second interference directional array, comprising a second subset of the plurality of acoustic drivers, for directionally radiating the other of a left channel audio and a right channel audio signal;
- and
- signal processing circuitry to process audio signals to the second subset of acoustic drivers so that radiation from each of the acoustic drivers interferes destructively so that radiation in a direction toward a listening location is less than radiation in other directions;
- the first subset and the second subset comprising at least one common acoustic driver.
7 more elements
A television, comprising an audio device, comprising:
- at least three acoustic drivers, arranged substantially in a line, and separated by a non-uniform distance;
- a first interference directional array, comprising
- a first subset of the plurality of acoustic drivers, for directionally radiating one of a left channel audio signal and a right channel audio signal;
- and
- signal processing circuitry to process audio signals to the first subset of acoustic drivers so that radiation from each of the acoustic drivers interferes destructively so that radiation in a direction toward a listening location is less than radiation in other directions;
- and
- a second interference directional array, comprising a second subset of the plurality of acoustic drivers, for directionally radiating the other of a left channel audio and a right channel audio signal;
- and
- signal processing circuitry to process audio signals to the second subset of acoustic drivers so that radiation from each of the acoustic drivers interferes destructively so that radiation in a direction toward a listening location is less than radiation in other directions;
- the first subset and the second subset comprising at least one common acoustic driver.
7 more elements
Dependencies are inferred from the claim text.