Acoustic vibration sensor
First Claim
Patent Images
1. A sensor for generating electrical signals, comprising:
- a diaphragm positioned adjacent a front port and a rear port; and
a coupler configured to couple a first set of signals to a first side of the diaphragm and reject a second set of signals by isolating the diaphragm from the second set of signals, wherein the coupler includes a protrusion on a first side of the coupler that couples to the first side of the diaphragm, wherein the rear port couples a second side of the diaphragm to an airborne acoustic environment of a human talker.
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Abstract
An acoustic vibration sensor, also referred to as a speech sensing device, is provided. The acoustic vibration sensor receives speech signals of a human talker and, in response, generates electrical signals representative of human speech. The acoustic vibration sensor includes at least one diaphragm positioned adjacent to a front port and at least one coupler. The coupler couples a first set of signals to the diaphragm while isolating the diaphragm from the second set of signals. The coupler includes at least one material with acoustic impedance matched to the acoustic impedance of human skin.
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Citations
17 Claims
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1. A sensor for generating electrical signals, comprising:
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a diaphragm positioned adjacent a front port and a rear port; and a coupler configured to couple a first set of signals to a first side of the diaphragm and reject a second set of signals by isolating the diaphragm from the second set of signals, wherein the coupler includes a protrusion on a first side of the coupler that couples to the first side of the diaphragm, wherein the rear port couples a second side of the diaphragm to an airborne acoustic environment of a human talker. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An acoustic sensor, comprising:
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a first port on a first side of an enclosure; a second port on a second side of an enclosure; a diaphragm positioned between the first and second ports; and a contiguous coupler having a first portion that couples a first side of the diaphragm to skin of a human talker, a second portion that couples to the diaphragm, and a third portion that isolates the first side of the diaphragm from an airborne acoustic environment of the human talker; wherein the second port couples a second side of the diaphragm to the airborne acoustic environment. - View Dependent Claims (8, 9)
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10. A communication system, comprising:
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at least one signal processor; and at least one acoustic sensor that couples electrical signals representative of human speech to the signal processor, the sensor including a diaphragm positioned behind a first port of an enclosure and a contiguous coupler, wherein the contiguous coupler comprises, a first portion that couples to the diaphragm; a second portion that contacts skin of a human talker; and a portion that isolates a first side of the diaphragm from an airborne acoustic environment of the human talker, wherein a second port couples a second side of the diaphragm to the airborne acoustic environment. - View Dependent Claims (11)
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12. A Voice Activity Detector (VAD) sensor for generating an electrical VAD signal, comprising:
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a diaphragm positioned adjacent a front port and a rear port; and a coupler configured to couple a first set of signals to a first side of the diaphragm and reject a second set of signals by isolating the diaphragm from the second set of signals, wherein the coupler includes a protrusion on a first side of the coupler that couples to the first side the diaphragm, wherein the rear port couples a second side of the diaphragm to an airborne acoustic environment of a human talker. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification