A METHOD OF REDUCING WIND NOISE IN A HEARING DEVICE
A hearing device comprises an earpiece adapted to be worn at an ear of a user. The hearing device comprises a multitude of input transducers providing a corresponding multitude of electric input signals in a time-frequency representation (k,m); a noise reduction system comprising first and second be...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | A hearing device comprises an earpiece adapted to be worn at an ear of a user. The hearing device comprises a multitude of input transducers providing a corresponding multitude of electric input signals in a time-frequency representation (k,m); a noise reduction system comprising first and second beamformer filters configured to receive the multitude of electric input signals and providing first and second beamformed signals respectively, first and second noise reduction controllers configured to receive said multitude of electric input signals, and said first and second beamformed signals, respectively, and to respective first and second noise reduced signals, according to first and second adaptive selection schemes, respectively. The first and second adaptive selection schemes are either based on the adaptive selection scheme of the other noise reduction controller, or comprises that a given time-frequency bin (k,m) of the first or second noise reduced signal is determined from the content of the time-frequency bin (k,m) among the multitude of electric input signals and the first and second beamformed signals, respectively, comprising the least energy or having the smallest magnitude. The hearing device further comprises an output stage comprising at least one of a) a first output transducer located in said earpiece and configured to provide output stimuli perceivable as sound to the user in dependence of said first noise reduced signal or gains, or a signal or signals or gains based thereon; b) a second output transducer comprising a transmitter for transmitting an audio signal provided in dependence of said second noise reduced signal to an external device; and c) a keyword detector or a part thereof configured to receive said second noise reduced signal. A method of operating a hearing device is further disclosed. The invention may e.g. be used in hearing aids or headsets or earphones or active ear protection devices. |
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