HEARING ASSISTANCE SYSTEM WITH OWN VOICE DETECTION
2 Assignments
0 Petitions
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.
2 Citations
21 Claims
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1. (canceled)
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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; 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 (3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. 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 (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification