公开(公告)号：US20240007802A1

公开(公告)日：2024-01-04

申请号：US18343766

申请日：2023-06-29

Applicant: Oticon A/S

Inventor： Meng GUO ,  Anders MENG ,  Daniel PLEWE ,  Jakob Sloth LAURIDSEN ,  Mirjana ADNADJEVICA ,  Mojtaba FARMANI ,  Nels Hede ROHDE ,  Adel ZAHEDI

IPC: H04R25/00

CPC classification number: H04R25/453 ,  H04R2460/01 ,  H04R25/405

Abstract: A hearing aid comprises a forward path comprising a) an input transducer for converting sound (x(n), v(n)) in an environment around the hearing aid to an electric input signal (y(n)) representing said sound; b) a hearing aid processor for processing said electric input signal (y(n)), or a signal originating therefrom (e(n)), and to provide a processed signal (u(n)) based thereon; c) an output transducer for converting said processed signal (u(n)), or a signal originating therefrom (ua(n)), to acoustic stimuli presented to said eardrum of the user. The hearing aid further comprises d) a feedback control system for attenuating or cancelling feedback propagated via a feedback path (H) from an electric input signal to said output transducer to an electric output from said input transducer.

公开(公告)号：US20220322019A1

公开(公告)日：2022-10-06

申请号：US17708467

申请日：2022-03-30

Applicant: Oticon A/S

Inventor： Meng GUO ,  Bernhard KUENZLE

IPC: H04R25/00

Abstract: In a method of fitting of a hearing device having an input transducer and an output transducer, the method includes executing a fitting application on a graphical user interface of an external device in communication with the hearing device, detecting by measuring reactions of the user to picked-up sound, performing acoustic feedback measurements as a background process without a user's involvement, assessing the probability of a correct physical fit based on the position of the inserted hearing device, assessing feedback risk based on the correct physical fit assessment and the acoustic feedback measurements, and fine tuning fitting parameter of the hearing device based on the result of at least one of the detected reactions of the user, acoustic feedback measurements and saved, within the fitting application, personal information of the user.

公开(公告)号：US20190132686A1

公开(公告)日：2019-05-02

申请号：US16176862

申请日：2018-10-31

Applicant: Oticon A/S

Inventor： Martin KURIGER ,  Bernhard KUENZLE ,  Meng GUO

IPC: H04R25/00

Abstract: A hearing device, e.g. a hearing aid, comprises an input transducer for providing an electric input signal representative of a sound in the environment of the hearing device, an output transducer for providing an output sound representative of said electric input signal, a signal processor operationally connected to the input and output transducers, and forming part of an electric forward path for processing said electric input signal and providing a processed electric output signal, and a feedback detector for providing first and second indications of current feedback in an external—acoustic and/or mechanical—feedback path from said output transducer to said input transducer. The feedback detector is configured to determine the first and second indications of current feedback, respectively, based on said electric input signal or a processed version thereof and—optionally—on a current open loop magnitude of a feedback loop defined by said forward path and said external feedback path. The first and second indications of current feedback are generated with first and second time constants, respectively, where the first time constant is larger than the second time constant. The application further relates to a method of estimating feedback in a hearing device.

公开(公告)号：US20180041845A1

公开(公告)日：2018-02-08

申请号：US15785927

申请日：2017-10-17

Applicant: Oticon A/S ,  Bernafon AG

Inventor： Bernhard KÜNZLE ,  Meng GUO

IPC: H04R25/00 ,  H04R1/10

CPC classification number: H04R25/453 ,  H04R1/1041 ,  H04R25/356 ,  H04R2225/43

Abstract: A hearing device, e.g. a hearing aid, is provided, comprising a forward path comprising an input transducer for providing an electric input signal, a signal processing unit configured to apply a requested forward gain to the electric input signal, and an output transducer. The hearing device further comprises a feedback reduction unit for reducing a risk of howl due to feedback from the output transducer to the input transducer. The forward path and the external feedback path defines a roundtrip loop delay. The feedback reduction unit is configured to modulate said requested forward gain in time, to provide that the resulting forward gain exhibits a first, increased gain AH in a first time period TH and a second, reduced gain AL in a second time period TL, wherein at least one of AH, AL, TH, and TL is/are determined according to a predetermined or adaptively determined criterion including said roundtrip loop delay.

公开(公告)号：US20170164122A1

公开(公告)日：2017-06-08

申请号：US15438182

申请日：2017-02-21

Applicant: Oticon A/S

Inventor： Meng GUO

IPC: H04R25/00

CPC classification number: H04R25/453 ,  G06F3/165 ,  H04R25/554 ,  H04R25/558 ,  H04R25/70 ,  H04R2225/55

Abstract: A hearing system comprises a programming device comprising a) a feedback path analyzer for providing an estimate of a feedback path from an output transducer to an input transducer of a hearing device, and b) a programming interface allowing the exchange of data between the programming device and the hearing device. The programming device is configured to receive corresponding input and output time segments of an electric input signal and of a processed output signal, respectively, of the hearing device, via the programming interface, and the feedback path analyzer is configured to determine the estimate of the feedback path based on the input and output time segments. The invention may e.g. be used for the fitting of hearing devices, e.g. hearing aids, to a particular use or user.

公开(公告)号：US20170078804A1

公开(公告)日：2017-03-16

申请号：US15264835

申请日：2016-09-14

Applicant: Oticon A/S ,  Bernafon AG

Inventor： Meng GUO ,  Bernhard KÜNZLE

IPC: H04R25/00

CPC classification number: H04R25/453 ,  H04R25/353

Abstract: A hearing device, e.g. a hearing aid, comprises a forward path comprising an input transducer providing an electric input signal, a combination unit, a signal processing unit configured to apply a forward gain to signal of the forward path and to provide a processed electric output signal, a frequency shifting unit for de-correlating the processed electric output signal and the electric input signal, and an output transducer. The hearing device further comprises an adaptive filter for providing an estimate of an external feedback path, and located in the forward path. The feedback estimation unit provides a resulting feedback estimate signal, which is combined with the electric input signal in the combination unit to provide a resulting feedback corrected signal, and a correction unit for influencing said estimate of the feedback path by diminishing a residual bias, being a result of the frequency shift, in said resulting feedback estimate signal.

Abstract translation: 听力装置，例如 助听器，包括前进路径，其包括提供电输入信号的输入换能器，组合单元，被配置为向正向路径的信号施加正向增益并提供经处理的电输出信号的信号处理单元，频移 将处理后的电输出信号与电输入信号进行去相关的单元，以及输出变换器。 听力装置还包括用于提供外部反馈路径的估计并且位于前进路径中的自适应滤波器。 反馈估计单元提供结果反馈估计信号，其与组合单元中的电输入信号组合以提供所得到的反馈校正信号;以及校正单元，用于通过减少残余偏差来影响反馈路径的所述估计， 在所得到的反馈估计信号中是频移的结果。

公开(公告)号：US20160100259A1

公开(公告)日：2016-04-07

申请号：US14872925

申请日：2015-10-01

Applicant: Oticon A/S

Inventor： Meng GUO

IPC: H04R25/00

CPC classification number: H04R25/453 ,  H04R25/30 ,  H04R25/45 ,  H04R25/50 ,  H04R25/505 ,  H04R25/70 ,  H04R2460/15

Abstract: The application relates to a hearing system comprising a hearing device the hearing device comprising an input transducer for converting an input sound from the environment of the hearing device to an electric input signal, and an output transducer for converting an electric output signal to an output sound, and the input transducer—in a first mode of operation—being operationally coupled to the output transducer via a forward path, the hearing device further comprising a configurable output combination unit in said forward path, said output combination unit having first and second signal inputs and a signal output, the first signal input being a signal of the forward path and the second signal input being an output probe signal, and the output signal being electrically connected to said output transducer and configurable to consist of either of the first or second signal inputs, or a mixture or the first and second signal inputs, the hearing system further comprising a configurable probe signal generator for generating said output probe signal, an adaptive feedback estimation unit for generating an estimate of an unintended feedback path comprising an external feedback path from said output transducer to said input transducer, said feedback estimation unit comprising a feedback estimation filter using an adaptive feedback estimation algorithm, the adaptive feedback estimation unit being operationally coupled to the forward path, and a control unit for generating a control signal for controlling said configurable probe signal generator based on one or more control input signals, wherein said configurable probe signal generator is adapted to generate or select said output probe signal from a multitude of different probe signals, wherein said multitude of different probe signals comprises a perfect or almost perfect sequence and/or a an almost perfect sweep sequence. This has the advantages that the adaptation rate of the adaptive algorithm for estimating the feedback path and/or the precision of the feedback path estimate can be optimized.

公开(公告)号：US20230048848A1

公开(公告)日：2023-02-16

申请号：US17976154

申请日：2022-10-28

Applicant: Oticon A/S

Inventor： Meng GUO ,  Bernhard KUENZLE

IPC: H04R25/00

Abstract: A hearing aid is configured to be worn in and/or at an ear of a user, and comprises a) an input transducer for converting an input sound to an electric input signal representing sound, h) an output transducer for converting a processed electric output signal to an output sound, c) a signal processor operationally coupled to the input and output transducers and configured to apply a forward gain to the electric input signal or a signal originating therefrom, wherein the input transducer, the signal processor and the output transducer forming part of a forward path of the hearing aid. The hearing aid further comprises d) a feedback control system for compensating for acoustic or mechanical feedback of an external feedback path from the output transducer to the input transducer, wherein the feedback control system comprises i) a feedback estimation unit for providing a feedback estimate signal of said external feedback path, ii) a combination unit located in the forward path for combining the electric input signal or a signal derived therefrom and the feedback signal detected by said estimation unit, to provide a resulting feedback corrected signal, iii) a correlation detection unit configured to determine a correlation measure between said feedback corrected signal and said output signal, said correlation detection unit further configured to provide a processed version of said correlation measure.

公开(公告)号：US20220286790A1

公开(公告)日：2022-09-08

申请号：US17687191

申请日：2022-03-04

Applicant: Oticon A/S

Inventor： Bernhard KUENZLE ,  Meng GUO

IPC: H04R25/00

Abstract: A hearing device includes a feedback control system that applies an adaptive filtering algorithm. The adaptive algorithm provides a filter control signal to adaptively control filter coefficients based on first and second algorithm input signals of a forward path. The feedback control system further includes first and second transform units for transforming the first and second algorithm input signals to the transform domain, and an inverse transform unit to convert an estimate of the current feedback path in the transformed domain to a time domain estimate, and a combination unit in the forward path to subtract the estimate of the current feedback signal from a signal of the forward path to provide a feedback corrected signal.

公开(公告)号：US20220284878A1

公开(公告)日：2022-09-08

申请号：US17684723

申请日：2022-03-02

Applicant: Oticon A/S

Inventor： Bernhard KUENZLE ,  Meng GUO

IPC: G10K11/178 ,  H04R1/10 ,  G10L21/0232

Abstract: A hearing device comprises a forward path comprising an input transducer providing at an electric input signal representative of environment sound, a signal processor for processing said at least one electric input signal and providing a processed signal, and a loudspeaker connected to a speaker sound outlet providing an output sound to an eardrum of the user in dependence of said processed signal. The hearing device comprises an ITE-part adapted for being located in an ear canal of the user, an active emission canceller providing an electric sound cancelling signal, and an environment facing loudspeaker providing an output sound to the environment. The electric sound cancelling signal is determined in dependence of said processed signal to attenuate sound leaked from the speaker sound outlet to the environment when played by the environment facing loudspeaker. The environment facing loudspeaker has a sound outlet on an environment facing surface of the ITE-part.