Audio system and method of operation therefor
First Claim
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1. An audio system comprising:
- an ultrasound transmitter configured to transmit an ultrasound test signal;
an ultrasound sensor array comprising a plurality of ultrasound sensor elements;
an estimator configured to estimate a presence characteristic of a user in response to a comparison between a characteristic of the ultrasound test signal and a characteristic of ultrasound signals received from the ultrasound sensor array, the ultrasound signals being reflected signals of the ultrasound test signal;
an audio band array comprising audio band elements;
an audio array circuit configured to generate a directional response of the audio band array by applying weights to individual audio band signals of the audio band elements; and
a weight circuit configured to determine the weights in response to the presence characteristic.
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Abstract
An audio system that includes an ultrasound sensor array which has a plurality of ultrasound sensor elements, and an audio band array which has a plurality of audio band elements. An estimator is configured to generate a presence characteristic of a user in response to ultrasound signals received from the ultrasound sensor array. The presence characteristic may include a position estimate for the user. An audio array circuit is configured to generate a directional response for the audio band array by applying weights to individual audio band signals for the audio band elements. A weight circuit is configured to determine the weights in response to the presence characteristic.
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Citations
22 Claims
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1. An audio system comprising:
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an ultrasound transmitter configured to transmit an ultrasound test signal; an ultrasound sensor array comprising a plurality of ultrasound sensor elements; an estimator configured to estimate a presence characteristic of a user in response to a comparison between a characteristic of the ultrasound test signal and a characteristic of ultrasound signals received from the ultrasound sensor array, the ultrasound signals being reflected signals of the ultrasound test signal; an audio band array comprising audio band elements; an audio array circuit configured to generate a directional response of the audio band array by applying weights to individual audio band signals of the audio band elements; and a weight circuit configured to determine the weights in response to the presence characteristic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of operation for an audio system having an ultrasound sensor array comprising a plurality of ultrasound sensor elements and an audio band array comprising audio band elements, the method comprising acts of:
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transmitting an ultrasound test signal by an ultrasound transmitter; estimating by an estimator a presence characteristic of a user in response to a comparison between a characteristic of the ultrasound test signal and a characteristic of ultrasound signals received from the ultrasound sensor array, the ultrasound signals being reflected signals of the ultrasound test signal; generating a directional response of the audio band array by applying weights to individual audio band signals of the audio band elements by an audio array circuit; and determining the weights in response to the presence characteristic by a weight circuit.
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Specification