Method for feedback recognition in a hearing aid and a hearing aid operating according to the method
First Claim
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1. A Method for recognizing feedback in a hearing aid having a signal transmission path between a microphone and an audio transducer, comprising the steps of:
- (a) determining a frequency band for feedback recognition;
(b) determining a first signal level of a signal in said frequency band transmitted on said signal transmission path;
(c) attenuating said signal in said frequency band transmitted on said signal path to obtain an attenuated signal in said frequency band, and determining a second signal level of said attenuated signal; and
(d) recognizing feedback in said frequency band dependent on a relationship between said first signal level and said second signal level.
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Abstract
In a method for feedback recognition in a hearing aid and a hearing aid operating according to the method, a frequency band is defined, a first signal level in the frequency band is determined, the signal on a signal transmission path of the hearing aid is attenuated, and a second signal level of the attenuated signal in the frequency band is determined, and feedback is recognized on the basis of the identified first and second signal levels.
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Citations
12 Claims
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1. A Method for recognizing feedback in a hearing aid having a signal transmission path between a microphone and an audio transducer, comprising the steps of:
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(a) determining a frequency band for feedback recognition;
(b) determining a first signal level of a signal in said frequency band transmitted on said signal transmission path;
(c) attenuating said signal in said frequency band transmitted on said signal path to obtain an attenuated signal in said frequency band, and determining a second signal level of said attenuated signal; and
(d) recognizing feedback in said frequency band dependent on a relationship between said first signal level and said second signal level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A hearing aid comprising:
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a microphone and an audio transducer with a signal transmission path therebetween;
a band stop filter selectively connectable into said signal transmission path; and
a control unit for selectively connecting said band stop filter into said signal transmission path for determining a first signal level of a signal transmitted on said signal transmission path without said band stop filter connected in said signal transmission path and for determining a second signal level of said signal transmitted on said signal transmission path with said band stop filter connected in said signal transmission path, and for recognizing feedback dependent on a relationship between said first signal level and said second signal level. - View Dependent Claims (10, 11, 12)
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Specification