公开(公告)号：US20140056435A1

公开(公告)日：2014-02-27

申请号：US13967055

申请日：2013-08-14

Applicant: Retune DSP ApS ,  OTICON A/S

Inventor： Ulrik KJEMS ,  Jesper JENSEN

IPC: G10L15/20

CPC classification number: G10L15/20 ,  G10L21/0232 ,  G10L2021/02166 ,  H04M9/082 ,  H04R1/1083 ,  H04R3/005 ,  H04R3/02 ,  H04R2225/43 ,  H04R2227/009

Abstract: A method comprises processing M subband communication signals and N target-cancelled signals in each subband with a set of beamformer coefficients to obtain an inverse target-cancelled covariance matrix of order N in each band; using a target absence signal to obtain an initial estimate of the noise power in a beamformer output signal averaged over recent frames with target absence in each subband; multiplying the initial noise estimate with a noise correction factor to obtain a refined estimate of the power of the beamformer output noise signal component in each subband; processing the refined estimate with the magnitude of the beamformer output to obtain a postfilter gain value in each subband; processing the beamformer output signal with the postfilter gain value to obtain a postfilter output signal in each subband; and processing the postfilter output subband signals to obtain an enhanced beamformed output signal.

Abstract translation: 一种方法包括利用一组波束形成器系数处理每个子带中的M个子带通信信号和N个目标消除信号，以获得每个频带中的N阶逆目标消除协方差矩阵; 使用目标缺失信号来获得在每个子带中目标不存在的最近帧上平均的波束形成器输出信号中的噪声功率的初始估计; 将初始噪声估计与噪声校正因子相乘以获得每个子带中波束形成器输出噪声信号分量的功率的精确估计; 用波束形成器输出的幅度处理精细估计，以获得每个子带中的后置滤波器增益值; 用后置滤波器增益值处理波束形成器输出信号以获得每个子带中的后滤波器输出信号; 以及处理后置滤波器输出子带信号以获得增强的波束形成输出信号。

公开(公告)号：US20240276157A1

公开(公告)日：2024-08-15

申请号：US18638520

申请日：2024-04-17

Applicant: Oticon A/S

Inventor： Poul HOANG ,  Jan M. DE HAAN ,  Michael Syskind PEDERSEN ,  Jesper JENSEN

IPC: H04R25/00 ,  G06F16/61 ,  G06N20/00

CPC classification number: H04R25/407 ,  G06N20/00 ,  H04R25/405 ,  H04R25/505 ,  G06F16/61 ,  H04R2225/51

Abstract: A hearing aid microphone system includes M microphones providing corresponding electric input signals. Environmental sound at a given microphone includes a target sound signal propagated via an acoustic propagation channel from a direction to or a location of a target sound source to the microphone, and possible additive noise signals. The acoustic propagation channel is modeled. The hearing aid system includes: a processor connected to the microphones, and a database Θ having a multitude of dictionaries Δp, p=1, . . . , P, where p is a person index, of vectors, termed ATF-vectors, whose elements ATFm, m=1, . . . , M, are frequency dependent acoustic transfer functions representing direction- or location-dependent, and frequency dependent propagation of sound. The processor is configured to, at least in a learning mode of operation, determine personalized ATF-vectors based on the multitude of dictionaries Δp, the electric input signals, and the model of the acoustic propagation channels.

公开(公告)号：US20230186934A1

公开(公告)日：2023-06-15

申请号：US18080942

申请日：2022-12-14

Applicant: Oticon A/S

Inventor： Jan M. DE HAAN ,  Robert REHR ,  Sebastien CURDY-NEVES ,  Svend FELDT ,  Jesper JENSEN ,  Michael Syskind PEDERSEN ,  Michael Noes GÄTKE ,  Mohammad EL-SAYED ,  Stig PETRI ,  Karsten BONKE ,  Gary Jones ,  Poul Hoang

IPC: G10L21/0216 ,  H04R1/10 ,  H04R3/00 ,  H04R1/40 ,  G10K11/178

CPC classification number: G10L21/0216 ,  H04R1/1083 ,  H04R3/005 ,  H04R1/406 ,  G10K11/17854 ,  H04R2460/01 ,  G10L2021/02166

Abstract: A hearing device includes a) a multitude of input transducers providing a corresponding multitude of electric input signals; and b) a processor for providing a processed signal in dependence of the electric input signals. The processor includes b1) a beamformer for providing a spatially filtered signal in dependence of electric input signals and beamformer filter coefficients determined in dependence of a fixed steering vector including as elements respective acoustic transfer functions from a target signal source, to each of said multitude of input transducers; and b2) a target adaptation module connected to the input transducers and to at least one beamformer, the target adaptation module being configured to provide compensation signals to compensate the electric input signals so that they match the fixed steering vector.

公开(公告)号：US20220295191A1

公开(公告)日：2022-09-15

申请号：US17691898

申请日：2022-03-10

Applicant: Oticon A/S

Inventor： Michael Syskind PEDERSEN ,  Jesper JENSEN ,  Jan M. DE HAAN ,  Poul HOANG

IPC: H04R25/00 ,  G10L21/0216

Abstract: A hearing aid includes an input providing an input signal representing sound in an environment, the input signal including no speech signal, or one or more speech signals from one or more speech sound sources and additional signal components, termed noise signal, from one or more other sound sources, an own voice detector, a voice activity detector, and a talker extraction unit to determine and/or receive one or more speech signals as separated one or more speech signals from speech sound sources other than the hearing aid user and to detect the speech signal originating from the voice of the user. The talker extraction unit provides separate signals, each including, or indicating presence of, one of the one or more speech signals. A noise reduction system determines speech overlap and/or gap between the speech signal originating from the user's voice and each of the separated one or more speech signals.

公开(公告)号：US20220124440A1

公开(公告)日：2022-04-21

申请号：US17565034

申请日：2021-12-29

Applicant: Oticon A/S

Inventor： Eleni KOUTROULI ,  Michael Syskind PEDERSEN ,  Jesper JENSEN ,  Jan M. DE HAAN

IPC: H04R25/00

Abstract: A binaural hearing system comprises a first and second hearing aids. The hearing aids each comprises antenna and transceiver circuitry allowing the exchange of audio signals between them. At least one of the hearing aids comprises primary and secondary adaptive 2-channel beamformers each providing a spatially filtered signal based on first and second beamformer-input signals. The primary and secondary 2-channel beamformers are coupled in a cascaded structure. In an embodiment, the spatially filtered signal of the secondary 2-channel beamformer may comprise an estimate of user's own voice. In an embodiment, the spatially filtered signal of the secondary 2-channel beamformer may comprise an estimate of a target signal in the environment. In an embodiment, the inputs to the secondary 2-channel beamformer may be beamformed signals from the first and second hearing aids respectively.

公开(公告)号：US20210409878A1

公开(公告)日：2021-12-30

申请号：US17361615

申请日：2021-06-29

Applicant: Oticon A/S

Inventor： Michael Syskind PEDERSEN ,  Nels Hede ROHDE ,  Thomas BENTSEN ,  Anders Brødløs OLSEN ,  Jesper JENSEN ,  Peter Mølgaard SØRENSEN ,  Gusztáv LÕCSEI

IPC: H04R25/00 ,  G10L15/22

Abstract: A hearing aid configured to be worn by a user, comprises a) an input unit configured to provide an electric input signal representing sound, b1) a wake word detector configured to identify a particular wake word based on said electric input signal, or a signal derived therefrom, and to provide a wake word control signal indicative of whether or not, or with what probability, said wake word is detected, or b2) an own voice detector configured to estimate whether or not, or with what probability, the electric input signal or a signal derived therefrom originates from the voice of the user and to provide an own voice control signal indicative thereof, c) transceiver circuitry configured to establish a communication link to another hearing aid allowing the transmission of said electric input signal, or a signal derived therefrom, to said another hearing aid and/or the reception of an electric input signal, or a signal derived therefrom, from said another hearing aid., and d) a pre-processor configured to control said transceiver circuitry in dependence of said wake word control signal or in dependence of said own voice control signal. A binaural hearing aid system and a method of operating a hearing aid are further disclosed. The invention may e.g. be used in binaural hearing aid systems and associated applications, e.g. communication systems.

公开(公告)号：US20210274296A1

公开(公告)日：2021-09-02

申请号：US17186550

申请日：2021-02-26

Applicant: Oticon A/S

Inventor： Nels Hede ROHDE ,  Thomas BENTSEN ,  Anders Brødløs OLSEN ,  Michael Syskind PEDERSEN ,  Svend FELDT ,  Jesper JENSEN

IPC: H04R25/00 ,  H04M1/72409 ,  G01B17/00

Abstract: A hearing aid system comprises a hearing aid, and a portable auxiliary device' adapted to establish a communication link between them. The hearing aid comprises a microphone providing an electric input signal, a signal processor, and an output unit. The auxiliary device comprises a microphone providing an auxiliary electric input signal, and a user control interface allowing a user to initiate a specific calibration mode of operation of the hearing aid system. The signal processor of the hearing aid is configured to receive corresponding time segments of said electric input signal and said auxiliary electric input signal to provide an estimate of an acoustic transfer function from said microphone of said auxiliary device to said microphone of said hearing aid. A method of operating a hearing aid system is further disclosed. The invention may e.g. be used in various applications related to own voice detection and estimation.

公开(公告)号：US20200260198A1

公开(公告)日：2020-08-13

申请号：US16785167

申请日：2020-02-07

Applicant: Oticon A/S

Inventor： Asger Heidemann ANDERSEN ,  Jesper JENSEN ,  Michael Syskind PEDERSEN ,  Nels Hede ROHDE ,  Anders Brødløs OLSEN ,  Michael Smed KRISTENSEN ,  Thomas BENTSEN ,  Andreas Thelander BERTELSEN

IPC: H04R25/00 ,  G10L25/51 ,  G06N3/08

Abstract: A hearing device, e.g. a hearing aid, is configured to be worn by a user at or in an ear or to be fully or partially implanted in the head at an ear of the user. The hearing device comprises a) an input unit for providing at least one electric input signal in a time frequency representation k, m, where k and m are frequency and time indices, respectively, and k represents a frequency channel, the at least one electric input signal being representative of sound and comprising target signal components and noise components; and b) a signal processor comprising b1) an SNR estimator for providing a target signal-to-noise ratio estimate for said at least one electric input signal in said time frequency representation; and b2) an SNR-to-gain converter for converting said target signal-to-noise ratio estimate to respective gain values in said time frequency representation. The signal processor comprises a neural network, wherein the weights of the neural network have been trained with a plurality of training signals. A method of operating a hearing aid is further disclosed. The invention may e.g. be used in audio devices, such as hearing aids, headsets, mobile telephones, etc., operating in noisy acoustic environments.

公开(公告)号：US20180255408A1

公开(公告)日：2018-09-06

申请号：US15957164

申请日：2018-04-19

Applicant: Oticon A/S

Inventor： Michael Syskind PEDERSEN ,  Jesper JENSEN

IPC: H04R25/00

CPC classification number: H04R25/552 ,  H04R25/305 ,  H04R25/407 ,  H04R25/505 ,  H04R25/554 ,  H04R25/558 ,  H04R2225/43 ,  H04R2225/55

Abstract: The disclosure relates to binaural hearing instruments and more particularly to reduction of processing time required in a binaural hearing aid system. According to the disclosure, there is provided a method comprising mono-directional transmission of data blocks comprising audio and/or information frames from one hearing instrument to the other hearing instrument or vice versa in a binaural hearing aid. According to the disclosure, the direction of transmission is determined by a quantity characterizing the presence of usable information content in the sound signal picked up by the hearing instruments of the binaural hearing aid. It is proposed to use one or more of local SNR, local voice activity detection indication, local level, local speech intelligibility estimate to determine the direction of transmission, although other quantities may be used.

公开(公告)号：US20180048969A1

公开(公告)日：2018-02-15

申请号：US15792434

申请日：2017-10-24

Applicant: OTICON A/S

Inventor： Jesper JENSEN ,  Michael Syskind PEDERSEN

IPC: H04R25/00 ,  H04R3/00

CPC classification number: H04R25/554 ,  H04R3/005 ,  H04R25/405 ,  H04R25/407 ,  H04R2201/40 ,  H04R2225/43 ,  H04R2225/51 ,  H04R2225/55 ,  H04R2420/07 ,  H04R2430/23

Abstract: A partner microphone unit comprising a) a multitude microphones for picking up a sound from the environment providing corresponding electric input signals, each comprising a target signal component and a noise signal component; b) a multi-input unit noise reduction system for providing an estimate Ŝ of the target sound s comprising the person's voice and comprising a multi-input beamformer filtering unit coupled to said input units and configured to determine filter weights for providing a beamformed signal, wherein signal components from other directions than a direction of the target signal source are attenuated, whereas signal components from the direction of the target signal source are left un-attenuated; c) antenna and transceiver circuitry for establishing an audio link to another device; and wherein the multi-input beamformer filtering unit comprises an adaptive beamformer is provided.