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    Enhancement of noisy speech based on statistical speech and noise models
    71.
    发明授权
    Enhancement of noisy speech based on statistical speech and noise models 有权

    公开(公告)号：US10262675B2

    公开(公告)日：2019-04-16

    申请号：US15198084

    申请日：2016-06-30

    Applicant: Oticon A/S

    Inventor： Jesper Jensen

    IPC: G10L21/0232 ,  G10L25/84 ,  G10L21/0308 ,  G10L21/0364 ,  G10L15/20 ,  G10L21/0208

    Abstract: A system for enhancement of noisy speech comprises an input unit is configured to subdivide the spectrum of the input signal into a plurality of frequency sub-bands and to provide time-frequency coefficients X(k,m) for a sequence [X(k,m′−D+1) . . . X(k,m′)] of observable noisy signal samples for each of said frequency sub-bands, where k and m are frequency and time indices, respectively, and D is larger than 1. The system further comprises enhancement processing unit configured to receive X(k,m) and to provide enhanced time-frequency coefficients Ŝ(k,m), a storage for statistical model(s) of speech and for statistical model(s) of noise, and an optimizing unit configured to provide said enhanced time-frequency coefficients Ŝ(k,m) using said statistical model of speech and said statistical model of noise, while considering said sequence [X(k,m′−D+1) . . . X(k,m′)] of observable noisy signal samples. Thereby the enhancement processing unit is able to determine the enhanced time-frequency coefficients based on the time-frequency coefficients for each of said frequency sub-bands.

    Hearing aid comprising a beam former filtering unit comprising a smoothing unit
    72.
    发明授权
    Hearing aid comprising a beam former filtering unit comprising a smoothing unit 有权

    公开(公告)号：US10231062B2

    公开(公告)日：2019-03-12

    申请号：US15608294

    申请日：2017-05-30

    Applicant: Oticon A/S

    Inventor： Michael Syskind Pedersen ,  Jan Mark De Haan ,  Jesper Jensen

    IPC: H04R25/00 ,  G10L21/0208 ,  H04R3/00

    Abstract: A hearing aid comprises a resulting beam former (Y) for providing a resulting beamformed signal YBF based on first and second electric input signals IN1 and IN2, first and second sets of complex frequency dependent weighting parameters W11(k), W12(k) and W21(k), W22(k), and a resulting complex, frequency dependent adaptation parameter β(k). β(k) may be determined as / +c), where * denotes the complex conjugation and · denotes the statistical expectation operator, and c is a constant, and wherein said adaptive beam former filtering unit (BFU) comprises a smoothing unit for implementing said statistical expectation operator by smoothing the complex expression C2*·C1 and the real expression |C2>2 over time. Alternatively, β(k) may be determined from the following expression β = w C ⁢ ⁢ 1 H ⁢ C v ⁢ w C ⁢ ⁢ 2 w C ⁢ ⁢ 2 H ⁢ C v ⁢ w C ⁢ ⁢ 2 , where wC1 and wC2 are the beamformer weights representing the first (C1) and the second (C2) beamformers, respectively, Cv is a noise covariance matrix, and H denotes Hermitian transposition. Corresponding methods of operating a hearing aid, and a hearing aid utilizing smoothing β(k) based on adaptive covariance smoothing are disclosed.

    Hearing system comprising a binaural speech intelligibility predictor
    73.
    发明授权
    Hearing system comprising a binaural speech intelligibility predictor 有权

    公开(公告)号：US10225669B2

    公开(公告)日：2019-03-05

    申请号：US15895266

    申请日：2018-02-13

    Applicant: Oticon A/S

    Inventor： Jesper Jensen ,  Asger Heidemann Andersen ,  Jan Mark De Haan

    IPC: H04R25/00 ,  H04R3/00

    Abstract: The application relates to a binaural hearing system comprising left and right hearing devices, e.g. hearing aids, each comprising a) a multitude of input units, each providing a time-variant electric input signal xi(t) representing sound received at an ith input unit, t representing time, the electric input signal xi(t) comprising a target signal component si(t) and a noise signal component vi(t), the target signal component originating from a target signal source; b) a configurable signal processing unit for processing the electric input signals and providing a processed signal y(t); c) an output unit for creating output stimuli to the user, d) transceiver circuitry allowing information to be exchanged between the hearing devices, and e) a binaural speech intelligibility (SI) prediction unit for providing a binaural SI-measure of the predicted speech intelligibility of the user when exposed to said output stimuli, based on processed signals yl(t), yr(t) from the signal processing units of the respective left and right hearing devices. This allows the hearing devices to control the processing of the respective electric input signals based on said binaural SI-measure.

    Partner microphone unit and a hearing system comprising a partner microphone unit
    74.
    发明授权
    Partner microphone unit and a hearing system comprising a partner microphone unit 有权

    公开(公告)号：US09832576B2

    公开(公告)日：2017-11-28

    申请号：US15042944

    申请日：2016-02-12

    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.

    Control of an adaptive feedback cancellation system based on probe signal injection
    75.
    发明授权
    Control of an adaptive feedback cancellation system based on probe signal injection 有权
    基于探针信号注入的自适应反馈消除系统的控制

    公开(公告)号：US09100736B2

    公开(公告)日：2015-08-04

    申请号：US13622880

    申请日：2012-09-19

    Applicant: OTICON A/S

    Inventor： Jesper Jensen ,  Meng Guo

    IPC: H04B15/00 ,  H04M9/08 ,  H04R3/02 ,  H04R3/00 ,  H04R25/00 ,  H04R27/00

    CPC classification number: H04R3/02 ,  H04R3/005 ,  H04R25/407 ,  H04R25/453 ,  H04R27/00

    Abstract: Method and audio processing system determine a system parameter sp in a gain loop of an audio processing system. An alternative scheme is provided for feedback estimation in a multi-microphone audio processing system comprising an injected probe signal. The problem is solved in that a) an expression of an approximation of the expected square of the stationary loop gain, LGstat(ω,n), and b) an expression of the convergence or decay rate of the expected square of the stationary loop gain, LGstat(ω,n), after an abrupt change in one or more system parameters are determined, and in that c) a system parameter sp is determined from one of said expressions under the assumption that other system parameters are fixed. The method has the advantage of providing a relatively simple way of identifying and controlling dynamic changes in the acoustic feedback path(s).

    Abstract translation: 方法和音频处理系统确定音频处理系统的增益循环中的系统参数sp。 提供了一种替代方案，用于包括注入的探针信号的多麦克风音频处理系统中的反馈估计。 解决的问题是a）静态环路增益的预期平方的近似表达式，LGstat（ω，n），以及b）平稳环路增益的预期平方的收敛或衰减速率的表达式 在确定一个或多个系统参数的突然变化之后，确定LGstat（ω，n），并且其中c）在假设其他系统参数是固定的情况下，从所述表达式之一确定系统参数sp。 该方法具有提供识别和控制声反馈路径中的动态变化的相对简单的方法的优点。

    Hearing device comprising a detector and a trained neural network
    76.
    发明授权
    Hearing device comprising a detector and a trained neural network 有权

    公开(公告)号：US12143775B2

    公开(公告)日：2024-11-12

    申请号：US17981648

    申请日：2022-11-07

    Applicant: Oticon A/S

    Inventor： Michael Syskind Pedersen ,  Asger Heidemann Andersen ,  Jesper Jensen ,  Nels Hede Rohde ,  Anders Brødløs Olsen ,  Michael Smed Kristensen ,  Thomas Bentsen ,  Svend Oscar Petersen

    IPC: H04R25/00 ,  G06N3/063 ,  G10L15/08 ,  G10L17/00

    Abstract: A hearing device comprises an input transducer comprising a microphone for providing an electric input signal representative of sound in the environment of the hearing device, a pre-processor for processing electric input signal and providing a multitude of feature vectors, each being representative of a time segment thereof, a neural network processor adapted to implement a neural network for implementing a detector configured to provide an output indicative of a characteristic property of the at least one electric input signal, the neural network being configured to receive said multitude of feature vectors as input vectors and to provide corresponding output vectors representative of said output of said detector in dependence of said input vectors. The hearing device further comprises a transceiver comprising a transmitter and a receiver for establishing a communication link to another part or device or server, at least in a particular adaptation-mode of operation, and a selector for—in said particular adaptation—mode of operation—routing said feature vectors to said transmitter for transmission to said another part or device or server, and—in a normal mode of operation—to route said feature vectors to said neural network processor for use as inputs to said neural network, a neural network controller connected to said neural network processor for—in said particular adaptation-mode of operation—receiving optimized node parameters, and to apply said optimized node parameters to said nodes of said neural network to thereby implement an optimized neural network in said neural network processor, wherein the optimized node parameters have been selected among a multitude of sets of node parameters for respective candidate neural networks according to a predefined criterion in dependence of said feature vectors. A method of selecting optimized parameters for a neural network for use in a portable hearing device is further disclosed. The invention may e.g. be used in hearing aids or headsets, or similar, e.g. wearable, devices.

    Hearing device or system comprising a communication interface
    79.
    发明授权
    Hearing device or system comprising a communication interface 有权

    公开(公告)号：US11968500B2

    公开(公告)日：2024-04-23

    申请号：US17720744

    申请日：2022-04-14

    Applicant: Oticon A/S

    Inventor： Michael Syskind Pedersen ,  Jesper Jensen

    IPC: H04R25/00 ,  H03G5/00

    CPC classification number: H04R25/505 ,  H04R25/40 ,  H04R25/43 ,  H04R25/554 ,  H04R25/604

    Abstract: A hearing device, e.g. a hearing aid, comprises a) at least one input transducer for converting sound in the environment of the hearing device to respective at least one acoustically received electric input signal or signals representing said sound; b) a wireless receiver for receiving an audio signal from a wireless transmitter of a sound capturing device for picking up sound in said environment and providing a wirelessly received electric input signal representing said sound; and c) a processor configured c1) to receive said at least one acoustically received electric input signal or signals, or a processed version thereof; c2) to receive said wirelessly received electric input signal; and c3) to provide a processed signal. The processor comprises a signal predictor for estimating future values of said wirelessly received electric input signal in dependence of a multitude of past values of said signal, thereby providing a predicted signal. The hearing device further comprises d) an output transducer for presenting output stimuli perceivable as sound to the user in dependence of said processed signal from said processor, or a further processed version thereof. The processor is configured to provide said processed signal in dependence of the predicted signal or a processed version thereof 1) alone, or 2) mixed with said at least one acoustically received electric input signal or signals, or a processed version thereof. A hearing device comprising an earpiece and a separate audio processing device is further disclosed. The invention may e.g. be used in hearing devices in wireless communication with audio capture devices in an immediate environment of the user wearing the hearing device.

    Hearing device comprising a speech intelligibility estimator
    80.
    发明授权
    Hearing device comprising a speech intelligibility estimator 有权

    公开(公告)号：US11950057B2

    公开(公告)日：2024-04-02

    申请号：US17840172

    申请日：2022-06-14

    Applicant: Oticon A/S

    Inventor： Jesper Jensen ,  Asger Heidemann Andersen

    IPC: H04R25/00 ,  G10L25/78

    CPC classification number: H04R25/507 ,  G10L25/78 ,  G10L2025/786 ,  H04R2225/41

    Abstract: A hearing device, e.g. a hearing aid, comprises a) an input unit configured to provide at least one time-variant electric input signal representing sound, the at least one electric input signal comprising target signal components and optionally noise signal components, the target signal components originating from a target sound source; b) a signal processing unit for processing the at least one electric input signal and providing a processed signal; c) an output unit for creating output stimuli configured to be perceivable by the user as sound based on the processed signal from the signal processing unit; d) a speech presence probability prediction unit for repeatedly providing a measure of a predicted speech presence probability of the at least one electric input signal, or of a signal originating therefrom; and e) a speech intelligibility prediction unit for repeatedly providing a current measure of a predicted speech intelligibility of the at least one electric input signal, or of a signal originating therefrom. The speech intelligibility prediction unit is configured to determine said current measure of the predicted speech intelligibility in dependence of said measure of the predicted speech presence probability. A method of operating a hearing device is further disclosed. The invention may e.g. be used in hearing aids, headsets, earpieces (ear buds), etc.

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