Sound field reproduction system
First Claim
1. A sound field reproduction system comprising:
- a control unit for creating a first sound signal and a second sound signal from one or a plurality of sources;
a narrow-directional speaker mounted in or near a front seat of a vehicle;
a speaker mounted in or near a rear seat of said vehicle; and
a signal processing unit for driving said narrow-directional speaker based on said first sound signal that has been processed according to a frequency range, and for driving said speaker based on said second sound signal, wherein said signal processing unit is configured to create a first sound-leakage reducing sound signal from said first sound signal, to combine said first sound-leakage reducing sound signal with said second sound signal, to create a second sound-leakage reducing sound signal from said second sound signal, and to combine said second sound-leakage reducing sound signal with said first sound signal.
1 Assignment
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Accused Products
Abstract
The present invention is directed to providing a sound field reproduction system that can enhance the sound separation between the front and rear seats or left and right seats of a vehicle. The sound field reproduction system includes a control unit for creating a first sound signal and a second sound signal from one or a plurality of sources, a narrow-directional speaker mounted on the front seat side of the vehicle, a speaker mounted on the rear seat side of the vehicle, and a signal processing unit for driving the narrow-directional speaker based on the first sound signal that has been processed according to frequency range, and for driving the speaker based on the second sound signal.
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Citations
22 Claims
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1. A sound field reproduction system comprising:
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a control unit for creating a first sound signal and a second sound signal from one or a plurality of sources; a narrow-directional speaker mounted in or near a front seat of a vehicle; a speaker mounted in or near a rear seat of said vehicle; and a signal processing unit for driving said narrow-directional speaker based on said first sound signal that has been processed according to a frequency range, and for driving said speaker based on said second sound signal, wherein said signal processing unit is configured to create a first sound-leakage reducing sound signal from said first sound signal, to combine said first sound-leakage reducing sound signal with said second sound signal, to create a second sound-leakage reducing sound signal from said second sound signal, and to combine said second sound-leakage reducing sound signal with said first sound signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A sound field reproduction system comprising:
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a control unit for creating a first sound signal and a second sound signal from one or a plurality of sources; a first narrow-directional speaker mounted on a passenger side of a vehicle; a second narrow-directional speaker mounted on a driver side of said vehicle; and a signal processing unit for driving said first narrow-directional speaker based on said first sound signal that has been processed according to frequency range, and for driving said second narrow-directional speaker based on said second sound signal has been processed according to a frequency range, wherein said signal processing unit is configured to create a first sound-leakage reducing sound signal from said first sound signal, to combine said first sound-leakage reducing sound signal with said second sound signal, to create a second sound-leakage reducing sound signal from said second sound signal, and to combine said second sound-leakage reducing sound signal with said first sound signal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification