TECHNIQUES FOR GENERATING AUDIO SIGNALS
First Claim
Patent Images
1. A speaker device, comprising:
- a membrane positioned in a first plane, wherein the membrane is configured to oscillate along a first directional path and at a first frequency effective to generate an ultrasonic acoustic signal; and
a shutter positioned in a second plane that is substantially separated from the first plane, wherein the shutter is configured to modulate the ultrasonic acoustic signal such that an audio signal is generated.
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Abstract
Techniques described herein generally relate to generating an audio signal with a speaker. In some examples, a speaker device is described that includes a membrane and a shutter. The membrane can be configured to oscillate along a first directional path and at a first frequency effective to generate an ultrasonic acoustic signal. The shutter can be positioned about the membrane and configured to modulate the ultrasonic acoustic signal such that an audio signal can be generated.
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Citations
21 Claims
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1. A speaker device, comprising:
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a membrane positioned in a first plane, wherein the membrane is configured to oscillate along a first directional path and at a first frequency effective to generate an ultrasonic acoustic signal; and a shutter positioned in a second plane that is substantially separated from the first plane, wherein the shutter is configured to modulate the ultrasonic acoustic signal such that an audio signal is generated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for generating an audio signal, comprising:
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selectively oscillating a membrane located in a first plane along a first directional path and at a first frequency effective to generate an ultrasonic acoustic signal; and selectively moving a shutter positioned in a second plane that is separated from the first plane effective to modulate the ultrasonic acoustic signal and generate the audio signal. - View Dependent Claims (12, 13, 14, 15)
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16. A speaker array, comprising:
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a first speaker device, comprising a first membrane positioned in a first plane, wherein the first membrane is configured to oscillate along a first directional path and at a first frequency effective to generate a first ultrasonic acoustic signal; and a first shutter positioned in a second plane that is substantially separated from the first plane, wherein the first shutter is configured to modulate the first ultrasonic acoustic signal such that a first audio signal is generated; and a second speaker device, comprising a second membrane positioned in the first plane, wherein the second membrane is configured to oscillate along the first directional path and at a second frequency effective to generate a second ultrasonic acoustic signal; and a second shutter positioned in the second plane, wherein the second shutter is configured to modulate the second ultrasonic acoustic signal such that a second audio signal is generated. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification