Audio Apparatus
First Claim
1. Apparatus for providing different audio signals in a plurality of zones of a single enclosed space, comprising:
- loudspeakers associated with, and positioned in, each zone to radiate an audio output,an audio signal supply configured to supply a different audio signal to the loudspeakers in each zone, anda signal processor comprising;
an audio frequency divider configured to divide the audio frequency spectrum of each audio signal into higher and lower parts,a high frequency controller configured to direct the higher frequencies radiated in their respective zones, anda low frequency controller configured to vary any of the amplitude, phase and delay of the lower frequencies to tend to cancel sound radiation outside their respective zones.
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Abstract
Apparatus for providing different audio signals in a plurality of zones of a single enclosed space, comprising loudspeakers associated with, and positioned in, each zone to radiate an audio output, means capable of supplying a different audio signal to the loudspeakers in each zone, signal processing means comprising means for dividing the audio frequency spectrum of each audio signal into higher and lower parts, means for directing the higher frequencies radiated in their respective zones, and means for varying the phase, and delay of the lower frequencies to tend to cancel sound radiation outside their respective zones.
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Citations
20 Claims
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1. Apparatus for providing different audio signals in a plurality of zones of a single enclosed space, comprising:
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loudspeakers associated with, and positioned in, each zone to radiate an audio output, an audio signal supply configured to supply a different audio signal to the loudspeakers in each zone, and a signal processor comprising; an audio frequency divider configured to divide the audio frequency spectrum of each audio signal into higher and lower parts, a high frequency controller configured to direct the higher frequencies radiated in their respective zones, and a low frequency controller configured to vary any of the amplitude, phase and delay of the lower frequencies to tend to cancel sound radiation outside their respective zones. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of providing different audio signals in a plurality of zones of a single enclosed space, comprising
arranging loudspeakers in or adjacent to each zone to radiate an audio output in the associated zone, supplying a different audio signal to the loudspeakers in each zone, processing the audio signals including dividing the audio frequency spectrum of each audio signal into higher and lower parts, directing the higher frequencies radiated in their respective zones, and varying any of the amplitude, phase and delay of the lower frequencies to tend to cancel sound radiation outside their respective zones.
Specification