Hearing assistance system with own voice detection
First Claim
1. An apparatus configured to be worn by a wearer, comprising:
- a first microphone configured to produce a first microphone signal;
a second microphone configured to produce a second microphone signal; and
a voice detector including an adaptive filter configured to produce a filter output signal using the second microphone signal and an error signal produced by subtracting the filter output signal from the first microphone signal, the voice detector configured to;
detect a voice of the wearer by comparing a power of the error signal to a power of the first microphone signal; and
produce an indication of detection in response to the voice of the wearer being detected.
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Accused Products
Abstract
An example of an apparatus configured to be worn by a person who has an ear and an ear canal includes a first microphone adapted to be worn about the ear of the person, and a second microphone adapted to be worn at a different location than the first microphone. The apparatus includes a sound processor adapted to process signals from the first microphone to produce a processed sound signal, a receiver adapted to convert the processed sound signal into an audible signal to the wearer of the hearing assistance device, and a voice detector to detect the voice of the wearer. The voice detector includes an adaptive filter to receive signals from the first microphone and the second microphone.
85 Citations
20 Claims
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1. An apparatus configured to be worn by a wearer, comprising:
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a first microphone configured to produce a first microphone signal; a second microphone configured to produce a second microphone signal; and a voice detector including an adaptive filter configured to produce a filter output signal using the second microphone signal and an error signal produced by subtracting the filter output signal from the first microphone signal, the voice detector configured to; detect a voice of the wearer by comparing a power of the error signal to a power of the first microphone signal; and produce an indication of detection in response to the voice of the wearer being detected. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10)
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2. An apparatus configured to be worn by a wearer, comprising:
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a first microphone configured to produce a first microphone signal; a second microphone configured to produce a second microphone signal; a voice detector including an adaptive filter configured to produce a filter output signal using the second microphone signal and an error signal produced by subtracting the filter output signal from the first microphone signal, the voice detector configured to; detect a voice of the wearer by comparing a power of the error signal to a power of the first microphone signal; and produce an indication of detection in response to the voice of the wearer being detected; a sound processor configured to produce an audio output signal using the second microphone signal and the indication of detection; and a speaker configured to produce an audible signal using the audio output signal. - View Dependent Claims (3)
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11. A method for detecting a voice of a wearer of a wearable device having a first microphone and a second microphone, the method comprising:
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taking a desired signal for an adaptive filter from the first microphone; taking an input signal to the adaptive filter from the second microphone; producing an error signal of the adaptive filter by subtracting a filter output signal produced by the adaptive filter from the desired signal; feeding the error signal back to the adaptive filter; comparing a power of the error signal to a power of the desired signal; and detecting a voice of the wearer using an outcome of the comparison. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification