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HEARING SYSTEM COMPRISING A HEARING DEVICE AND A MICROPHONE UNIT FOR PICKING UP A USER'S OWN VOICE

  • US 20180054683A1
  • Filed: 08/15/2017
  • Published: 02/22/2018
  • Est. Priority Date: 08/16/2016
  • Status: Abandoned Application
First Claim
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1. A body worn hearing system comprising a hearing device, e.g. a hearing aid, adapted for being located at or in an ear of a user, or adapted for being fully or partially implanted in the head of the user, and a separate microphone unit adapted for being located at said user and picking up a sound, e.g. a voice of the user, from the user'"'"'s mouth, whereinthe hearing device comprisesa forward path comprising an input unit for receiving an electric audio signal and/or for generating an electric input signal representative of sound in an environment of the hearing device, a signal processing unit for processing said electric audio signal or said electric input signal or a mixture thereof and providing a processed signal, and an output unit for generating stimuli perceivable as sound when presented to the user based on said processed signal, andan antenna and transceiver unit forestablishing a communication link to a communication device and configured to receive an audio signal from the communication device, at least in a specific communication mode of operation of the hearing system, and forestablishing a communication link to the microphone unit for transmitting information to and/or receiving information from the microphone unit, and whereinthe microphone unit comprisesan input unit comprising a multitude M of microphones Mi, i=1, . . . , M, each being configured for picking up or receiving a signal representative of a sound xi(n) from the environment of the microphone unit and providing respective electric input signals x′

  • i(n), n representing time, and M being larger than or equal to two; and

    a multi-input noise reduction system for providing an estimate Ŝ

    of a target signal s comprising the user'"'"'s voice, the multi-input noise reduction system comprises a multi-input beamformer filtering unit operationally coupled to said multitude of microphones Mi, i=1, . . . , M, and configured to provide a spatially filtered signal; and

    an antenna and transceiver unit forestablishing a communication link to the communication device and configured to transmit said estimate Ŝ

    of the user'"'"'s voice to the communication device, at least in a specific communication mode of operation of the hearing system, and forestablishing a communication link to the hearing device for transmitting information to and/or receiving information from the hearing device,whereinthe hearing system comprises a control unit configured to estimatea current distance between the user'"'"'s mouth and the microphone unit, ora current time delay for propagation of sound from a user'"'"'s mouth to the microphone unit, and/orrelative transfer functions from the user'"'"'s mouth to each of the M microphones relative to a reference microphone among the M microphones, andthe hearing system is configured to control the multi-input noise reduction system in dependence of said current distance, or said current time delay, or said relative transfer functions.

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