Apparatus and method for detecting user speech
First Claim
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1. An apparatus for detecting user speech comprising:
- a first microphone and at least a second microphone each operable to generate sound signals with respective signal characteristics;
the first microphone operable to capture a greater proportion of speech sounds of a user than the second microphone;
processing circuitry operable to process the signal characteristics of the sound signals generated by the first microphone and the second microphone to determine variations in those signal characteristics for determining if the user is speaking.
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Abstract
An apparatus for detecting user speech comprises a first microphone and at least a second microphone, each operable to generate sound signals with respective signal characteristics. The first microphone is operable to capture a greater proportion of speech sounds of a user than the second microphone. Processing circuitry processes the signal characteristics of the sound signals generated by the first microphone and the second microphone to determine variations in those signal characteristics for determining if the user is speaking.
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Citations
60 Claims
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1. An apparatus for detecting user speech comprising:
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a first microphone and at least a second microphone each operable to generate sound signals with respective signal characteristics;
the first microphone operable to capture a greater proportion of speech sounds of a user than the second microphone;
processing circuitry operable to process the signal characteristics of the sound signals generated by the first microphone and the second microphone to determine variations in those signal characteristics for determining if the user is speaking. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A terminal system for detecting user speech comprising:
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a headset including first and second microphones operable to generate sound signals with respective signal characteristics, the first microphone operable to capture a greater proportion of speech sounds of a user wearing the headset than the second microphone;
a terminal including processing circuitry operable to process the signal characteristics of the first microphone signals and the signal characteristics of the second microphone to determine variations in those signal characteristics for determining if the user is speaking. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A headset for use with a terminal having speech recognition capabilities, the headset comprising:
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a first microphone and a second microphone each operable to generate sound signals with respective signal characteristics, the first microphone operable to capture a greater proportion of speech sounds of a user than the second microphone; and
processing circuitry operable to process the signal characteristics of the sound signals generated by the first microphone and the second microphone to determine variations in those sound signal characteristics for determining if the user is speaking. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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31. An apparatus in a voice-driven system for detecting user speech, comprising:
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a plurality of microphones separated on the body of a user and developing a plurality of signals with signal characteristics, at least a first signal of said plurality of signals including a greater proportion of user speech than a second signal of said plurality of signals which is characterized predominantly by ambient sounds; and
processing circuitry configured to process said plurality of signals for determining variations in their signal characteristics to develop an output signal that reveals the presence or absence of user speech. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A method for detecting user speech in a voice-driven environment, the method comprising:
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detecting sound with first and second microphones to generate sound signals for the respective microphones;
locating the first microphone to detect a greater proportion of speech sounds of a user than the second microphone;
processing signal characteristics of the sound signals generated by the first microphone and the second microphone and based on the variations in those sound signal levels, determining if the user is speaking. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51)
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52. A method useful in a voice-driven system for detecting user speech, comprising:
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developing a plurality of sound signals with signal characteristics from spaced locations on the body of a user, at least a first signal of said plurality of signals including a greater proportion of user speech than a second signal of said plurality of signals which is characterized predominantly by ambient sounds other than user speech; and
processing said plurality of signals for determining variations in their signal characteristics to develop an output signal that reveals the presence or absence of user speech. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60)
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Specification