DIRECTIONALLY CONTROLLABLE PARAMETRIC EMITTER
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United States of America Patent
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app pub date -
Oct 21, 2014
filing date -
Oct 21, 2013
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Abandoned
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Abstract
An ultrasonic audio system includes an ultrasonic emitter having a plurality of electrically isolated sections and configured to emit an audio-modulated ultrasonic signal from each of the plurality of electrically isolated sections; 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 differing in time relative to the other instances of the audio content signals; and communication links electrically coupling individual ones of the instances of the audio content signals to a corresponding ones of the plurality of electrically isolated emitter sections.
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