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Hearing aid device for hands free communication

  • US 10,341,786 B2
  • Filed: 12/05/2014
  • Issued: 07/02/2019
  • Est. Priority Date: 12/06/2013
  • Status: Active Grant
First Claim
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1. A hearing aid device comprising:

  • at least two environment sound inputs, each for receiving sound and generating electrical sound signals representing sound;

    a wireless sound input for receiving wireless sound signals;

    an output transducer configured to stimulate hearing of a hearing aid device user;

    a transmitter unit configured to transmit signals representing sound and/or voice, andelectric circuitry operatively coupled, in at least specific modes of operation of the hearing aid device, to the at least two environment sound inputs, the wireless sound input, the output transducer, and the transmitter unit, said electric circuitry including a dedicated beamformer-noise-reduction-system comprising a beamformer,wherein the hearing aid device is configured to activate a wireless sound receiving mode when the wireless sound input is receiving wireless sound signals,wherein, in the wireless sound receiving mode, the beamformer-noise-reduction-system is configured to retrieve a user voice signal representing the voice of said user of the hearing aid device from the electrical sound signals,the wireless sound input is configured to be wirelessly connected to a communication device and to receive wireless sound signals from the communication device, andthe transmitter unit is configured to be wirelessly connected to the communication device and to transmit said user voice signal to the communication device, whereinthe hearing aid device is configured to be worn in or at an ear of the user,the hearing air device comprises a voice activity detection unit configured to detect if said voice signal of said user is present in the electrical sound signals,the electric circuitry is configured to estimate a noise power spectral density of a disturbing background noise from sound received with the at least one environment sound input when the voice activity detection unit detects an absence of a voice signal of the user in the electrical sound signal, andsaid hearing aid device is configured to determine optimal settings for the beamformer-noise-reduction-system by combining an estimated inter-microphone noise covariance matrix with pre-determined target inter-microphone transfer function or look vector.

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