Dynamic location determination for a directionally controllable parametric emitter
First Claim
1. An ultrasonic audio system, comprising:
- a location sensor;
a location tracking module configured to receive information from the location sensor and to determine a location of a listener in a listening environment;
a time delay module configured to receive audio content and to generate a plurality of audio content signals, the generated audio content signals comprising a plurality of individual instances of the audio content signal each instance delayed in time relative to the other instances of the audio content signals;
an ultrasonic emitter comprising a plurality of electrically isolated sections, each section having an input electrically coupled to receive one of the individual instances of the audio content signal, and configured to emit an audio-modulated ultrasonic signal from each of the plurality of electrically isolated sections; and
a plurality of selectable interconnects, selectively electrically connecting adjacent pairs of the electrically isolated sections,wherein an amount of delay inserted for each instance of the audio content is computed so that a composite audio-modulated ultrasonic signal emitted by the emitter is directed toward the determined location of the listener.
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Accused Products
Abstract
An ultrasonic audio system includes a location sensor includes a location tracking module configured to receive information from the location sensor and to determine a location of a listener in a listening environment; a time delay module configured to receive audio content and to generate a plurality of audio content signals, the generated audio content signals comprising a plurality of individual instances of the audio content signal each instance delayed in time relative to the other instances of the audio content signals; and an ultrasonic emitter comprising a plurality of electrically isolated sections, each section having an input electrically coupled to receive one of the individual instances of the audio content signal, and configured to emit an audio-modulated ultrasonic signal from each of the plurality of electrically isolated sections.
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Citations
26 Claims
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1. An ultrasonic audio system, comprising:
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a location sensor; a location tracking module configured to receive information from the location sensor and to determine a location of a listener in a listening environment; a time delay module configured to receive audio content and to generate a plurality of audio content signals, the generated audio content signals comprising a plurality of individual instances of the audio content signal each instance delayed in time relative to the other instances of the audio content signals; an ultrasonic emitter comprising a plurality of electrically isolated sections, each section having an input electrically coupled to receive one of the individual instances of the audio content signal, and configured to emit an audio-modulated ultrasonic signal from each of the plurality of electrically isolated sections; and a plurality of selectable interconnects, selectively electrically connecting adjacent pairs of the electrically isolated sections, wherein an amount of delay inserted for each instance of the audio content is computed so that a composite audio-modulated ultrasonic signal emitted by the emitter is directed toward the determined location of the listener. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An ultrasonic audio system, comprising:
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a location sensor; a location tracking module configured to receive information from the location sensor and to determine a location of a listener in a listening environment; a time delay module configured to receive audio content and to generate a plurality of audio content signals, the generated audio content signals comprising a plurality of individual instances of the audio content signal each instance delayed in time relative to the other instances of the audio content signals; an ultrasonic emitter comprising a plurality of electrically isolated sections, each section having an input electrically coupled to receive one of the individual instances of the audio content signal, and configured to emit an audio-modulated ultrasonic signal from each of the plurality of electrically isolated sections; and a switching matrix configured to selectively route individual ones of the audio content signals to selected groups of electrically isolated sections, wherein the plurality of electrically isolated sections are arranged as a matrix on a face of the emitter, wherein an amount of delay inserted for each instance of the audio content is computed so that a composite audio-modulated ultrasonic signal emitted by the emitter is directed toward the determined location of the listener.
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21. An ultrasonic audio system, comprising:
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a location sensor; a location tracking module configured to receive information from the location sensor and to determine respective locations of a plurality of listeners detected by the location sensor; a time delay module configured to receive audio content and to generate a plurality of audio content signals, the generated plurality of audio content signals each comprising a plurality of individual instances of the audio content signal each instance delayed in time relative to the other instances of its respective audio content signal; an ultrasonic emitter comprising a plurality of electrically isolated sections, each section having an input electrically coupled to receive one of the individual instances of the audio content signal, and configured to emit an audio-modulated ultrasonic signal from each of the plurality of electrically isolated sections;
wherein an amount of delay inserted for the instances of the audio content for each of the generated plurality of audio content signals is computed so that a composite audio-modulated ultrasonic signal emitted by the emitter for each of the generated plurality of audio content signals is directed toward the determined location of respective listener corresponding to that generated audio content signal, wherein the ultrasonic emitter is configured to receive the generated plurality of audio signals multiplexed. - View Dependent Claims (22, 23, 24, 25)
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26. A method of delivering ultrasonic audio using an ultrasonic emitter comprising a plurality of electrically isolated sections, the method comprising:
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receiving information, at a location sensor, regarding a location of a user in a listening environment; receiving information from the location sensor and determining the location of the listener in the listening environment; generating a plurality of audio content signals, the generated audio content signals comprising a plurality of individual instances of the audio content signal each instance delayed in time relative to the other instances of the audio content signals; multiplexing the generated plurality of audio content signals prior to delivery to the ultrasonic emitter; at each of the electrically isolated sections of the ultrasonic emitter;
receiving one of the individual instances of the audio content signal and emitting an audio modulated ultrasonic signal;wherein an amount of delay inserted for each instance of the audio content is determined so that a composite audio-modulated ultrasonic signal emitted by the emitter is directed toward the determined location of the listener.
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Specification