公开(公告)号：US20200275217A1

公开(公告)日：2020-08-27

申请号：US16801832

申请日：2020-02-26

Applicant: Oticon A/S

Inventor： Meng GUO ,  Bernhard KUENZLE ,  Martin KURIGER

IPC: H04R25/00 ,  H03G3/30

Abstract: A hearing device comprises an input transducer providing an input gain GI, a signal processor comprising a compressor for determining a frequency and level dependent desired compressor gain GP to compensate for a hearing impairment of the user, and to provide a resulting compressor gain G′P, and an output transducer for providing output stimuli perceivable as sound for the user based on a processed signal, the output transducer providing an output gain, GO. A resulting forward path gain G′ is defined in a logarithmic representation as GI+G′P+GO. The hearing device further comprises a loop gain estimator for continuously estimating a current loop gain ΔL(n), configured to provide a loop gain estimate within a predefined number of feedback loop delays after a feedback buildup has started, and a loop gain controller for dynamically controlling said resulting forward path gain G′ in dependence of said estimate of said current loop gain ΔL(n). A resulting loop gain, LG′, is determined as a sum of the resulting forward path gain G′ and a feedback gain H when given in a logarithmic representation. The loop gain controller is configured to provide that the resulting loop gain is limited to stay below a predefined value.

公开(公告)号：US20190253817A1

公开(公告)日：2019-08-15

申请号：US16270784

申请日：2019-02-08

Applicant: Oticon A/S

Inventor： Susanna Løve CALLAWAY ,  Nicolas LE GOFF ,  Terri IVES ,  Nimrod BOGDANOVSKI ,  Mikkel Bo RASMUSSEN ,  Anders MENG ,  Martin KURIGER ,  Meng GUO ,  Mikkel GRØNBECH ,  Mojtaba FARMANI ,  Nels Hede ROHDE ,  Stefan GRAM ,  Sudershan Yalgalwadi SREEPADARAO ,  Bernhard KUENZLE

IPC: H04R25/00

CPC classification number: H04R25/70 ,  H04R25/453 ,  H04R2225/55

Abstract: A method of conducting a fitting session for fitting a hearing device to a hearing device user's needs is provided. The method comprises S1. providing an estimate of, a current feedback from said output transducer to said input transducer, while the hearing device is in an operational state; S2. evaluating said estimate of a current feedback and providing a value of a feedback risk indicator in dependence of said estimate of a current feedback; S3. determining whether said value of the feedback risk indicator fulfils a high-risk criterion; and S4. if said high-risk criterion is fulfilled providing at least one of a warning, a recommendation, and an action in relation to said feedback risk. Steps S1 to S4 are configured to be automatically performed as background processes.Thereby a simplified scheme for fitting a hearing device to a user's needs may be provided.

公开(公告)号：US20240430625A1

公开(公告)日：2024-12-26

申请号：US18339255

申请日：2023-06-22

Applicant: Oticon A/S

Inventor： Meng GUO

IPC: H04R25/00

Abstract: Disclosed herein are embodiments of a hearing aid configured to be worn at an ear having an active noise cancellation system configured to cancel or reduce directly propagated sound from said environment to said eardrum of the user. The active noise cancellation system can include an adaptive filter configured to provide a feedforward cancellation signal to compensate the directly propagated sound of an acoustic propagation path from said first input transducer to said second input transducer. Methods of operating a hearing aid are further disclosed.

公开(公告)号：US20230044509A1

公开(公告)日：2023-02-09

申请号：US17881077

申请日：2022-08-04

Applicant: Oticon A/S

Inventor： Meng GUO ,  Jesper JENSEN

IPC: H04R25/00

Abstract: A hearing aid comprises a) at least one input transducer for providing at least one electric input signal representing said sound; b) an output transducer for providing stimuli perceivable to the user as sound; c) a feedback control system configured to minimize feedback from said output transducer to said at least one input transducer, and to at least provide a feedback corrected version of said at least one electric input signal; and d) an audio signal processor configured to apply one or more processing algorithms to said feedback corrected version of said at least one electric input signal, and to provide a processed signal in dependence thereof. The feedback control system is based on a machine learning model receiving input data at least representing said at least one electric input signal; and said processed signal; and providing said feedback corrected version of the at least one electric input signal as an output. A method of training a machine learning model is further disclosed.

公开(公告)号：US20180063654A1

公开(公告)日：2018-03-01

申请号：US15690688

申请日：2017-08-30

Applicant: Oticon A/S

Inventor： Martin KURIGER ,  Bernhard KUENZLE ,  Meng GUO

IPC: H04R25/00

CPC classification number: H04R25/505 ,  H04M9/082 ,  H04R3/02 ,  H04R25/453 ,  H04R2430/03

Abstract: A hearing device, e.g. a hearing aid, comprises a forward path for processing an electric signal representing sound including a) an input unit for receiving or providing an electric input signal representing sound, b) a signal processing unit, c) an output transducer for generating stimuli perceivable as sound to a user, d) a feedback detection unit configured to detect feedback or evaluate a risk of feedback via an acoustic or mechanical or electrical feedback path from said output transducer to said input unit and comprising d1) a magnitude and phase analysis unit for repeatedly determining magnitude, Mag, and phase, Phase, of said electric input signal and further parameters based thereon, and d2) a feedback conditions and detection unit configured to check criteria for magnitude and phase feedback condition, respectively, based on said values, and to provide a feedback detection signal indicative of feedback or a risk of feedback.

公开(公告)号：US20170180879A1

公开(公告)日：2017-06-22

申请号：US15386976

申请日：2016-12-21

Applicant: Oticon A/S

Inventor： Svend Oscar PETERSEN ,  Anders THULE ,  Meng GUO

IPC: H04R25/00

CPC classification number: H04R25/453 ,  H04R25/305 ,  H04R25/405 ,  H04R25/407 ,  H04R25/606 ,  H04R2225/021 ,  H04R2225/025 ,  H04R2225/67 ,  H04R2410/05

Abstract: The application relates to a hearing device comprising a) first and second input transducers for picking up sound signals from the environment and providing first and second electric input signals, b) a first and signal strength detectors for providing signal strength estimates of the first and second electric input signal, the first input transducer being located at or behind an ear of the user, and the second input transducer being located at or in an ear canal of the user. The hearing device further comprises c) a signal processing unit providing a processed signal based on the first and second electric input signals, and d) an output unit comprising an output transducer for converting the processed signal or a signal originating therefrom to a stimulus perceivable by said user as sound. The hearing device further comprises e) a feedback detector comprising e1) a comparison unit operationally coupled to the first and second signal strength detectors and configured to compare the signal strength estimates of the first and second electric input signals and to provide a signal strength comparison measure indicative of the difference between the signal strength estimates, and e2) a decision unit for providing a feedback measure indicative of current acoustic feedback from the output transducer to the first and/or second input transducers based on the comparison measure. In an embodiment, the feedback measure is used to control processing in the signal processing unit, e.g. a beamformer unit and/or a feedback cancellation system, and/or an amplification unit. The invention may e.g. be used in hearing aids, in particular hearing aids comprising an ITE-part adapted for being located at or in an ear canal of a user and a BTE-part adapted for being located at or behind an ear or the user.

公开(公告)号：US20160119728A1

公开(公告)日：2016-04-28

申请号：US14922893

申请日：2015-10-26

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: The application relates to a hearing system comprising a hearing device (HD), and a programming device (PD), and a feedback path analyzer (FPA) for providing an estimate of a feedback path from an output transducer to an input transducer of the hearing device. The hearing device (HD) and the programming device (PD) each comprises a programming interface (PI, PD-PI) allowing the exchange of data between the devices. The feedback path analyzer (FPA) is located in the programming device (PD), and the hearing device (HD) comprises respective input (IBUF) and output (OBUF) buffers for storing corresponding input and output time segments of the electric input signal or a signal derived therefrom and of the processed output signal or a signal derived therefrom, respectively. The hearing device (HD)—in a specific feedback measurement mode—is configured to transmit said stored input and output time segments of the respective signals to the feedback path analyzer (FPA) of the programming device (PD) via said programming interface (PI, PD-PI), and the feedback path analyzer (FPA) is configured to determine said estimate of the feedback path based on said (stored) input and output time segments. Thereby a more accurate estimation and/or a shorter measurement time can be achieved. The invention may e.g. be used for the fitting of hearing devices, e.g. hearing aids, to a particular use or user.

Abstract translation: 该应用涉及包括听力设备（HD）和编程设备（PD）的听觉系统，以及用于提供从输出换能器到听力的输入换能器的反馈路径的估计的反馈路径分析器（FPA） 设备。 听力设备（HD）和编程设备（PD）各自包括允许在设备之间交换数据的编程接口（PI，PD-PI）。 反馈路径分析器（FPA）位于编程设备（PD）中，听力设备（HD）包括用于存储电输入信号的相应输入和输出时间段的相应输入（IBUF）和输出（OBUF）缓冲器，或 分别从其导出的信号和经处理的输出信号或从其导出的信号。 在特定反馈测量模式中的听力设备（HD）被配置为经由所述编程接口（PI）将所述存储的各个信号的输入和输出时间段发送到编程设备（PD）的反馈路径分析器（FPA） ，PD-PI），并且所述反馈路径分析器（FPA）被配置为基于所述（存储的）输入和输出时间段来确定所述反馈路径的所述估计。 从而可以实现更准确的估计和/或更短的测​​量时间。 本发明可以例如 用于装配听觉装置，例如 助听器，特定用途或用户。

公开(公告)号：US20230121895A1

公开(公告)日：2023-04-20

申请号：US17968186

申请日：2022-10-18

Applicant: Oticon A/S

Inventor： Meng GUO ,  Mojtaba FARMANI ,  Anders MENG ,  Thomas KAULBERG ,  Peter SOMMER

IPC: H04R25/00

Abstract: A hearing aid adapted for being worn by a user at or in an ear of the user comprises a) at least one input transducer for converting sound in an environment around the user to at least one electric input signal representing said sound; b) an output transducer for converting a processed output signal provided in dependence of said at least one electric input signal to stimuli perceivable to the user as sound; c) a feedback control system comprising an adaptive filer, the feedback control system being configured to provide an adaptively determined estimate (h*(n)) of a current feedback path (h(n)) from said output transducer to said at least one input transducer in dependence of c1) said at least one electric input signal, c2) said processed output signal, and c3) an adaptive algorithm. The hearing aid further comprises d) a database comprising a multitude (M) of previously determined candidate feedback paths (hm); and e) a controller configured to identify a change in the current feedback path (h(n)) based on the adaptively determined estimate (h*(n)) of the current feedback path and at least one of said multitude of previously determined candidate feedback paths (hm). A method of operating a hearing aid is further disclosed. The invention may e.g. be used in hearing aids, e.g. binaural hearing aid systems or headsets, or speakerphones, or combinations thereof.

公开(公告)号：US20220353623A1

公开(公告)日：2022-11-03

申请号：US17731700

申请日：2022-04-28

Applicant: Oticon A/S

Inventor： Thomas BEHRENS ,  Michael Syskind PEDERSEN ,  Meng GUO

IPC: H04R25/00

Abstract: A hearing aid configured to be worn at, and/or in, an ear of a user, comprises a forward path for processing sound from the environment of the user. The forward path comprises a) at least one first microphone providing at least one first electric input signal representing said sound as received at the respective at least one first microphones, said at least one first microphone being located away from a first ear canal of the user, b) an audio signal processor for processing said at least one first electric input signal, or a signal or signals originating therefrom, and for providing a processed signal, c) an output transducer for providing stimuli perceivable as sound to the user in dependence of said processed signal, and d) at least one second microphone connected to said audio signal processor, the at least one second microphone being configured to provide at least one second electric input signal representing said sound as received at the at least one second microphone, the at least one second microphone being located at or in said first ear canal of the user, and e) a feature extractor for extracting acoustic characteristics of said ear of the user from said at least one second electric input signal, or a signal originating therefrom. The hearing aid is configured to include said acoustic characteristics in the processed signal. The invention may e.g. provide improved sound localization in hearing aids.

公开(公告)号：US20220312127A1

公开(公告)日：2022-09-29

申请号：US17704355

申请日：2022-03-25

Applicant: Oticon A/S

Inventor： Sudershan Yalgalwadi SREEPADARAO ,  Anders MENG ,  Mojtaba FARMANI ,  Martin KURIGER ,  Mikkel GRØNBECH ,  Meng GUO

IPC: H04R25/00

Abstract: A hearing aid includes an input unit, an output unit, a signal processing unit connected to said input unit and output unit, where the input unit, the signal processing unit and the output unit are forming part of a forward path of the hearing aid, where the signal processing unit is configured to apply a forward gain to the at least one electric input signal or a signal originating therefrom. The hearing aid further includes a feedback control unit configured to reduce a risk of howl due to acoustic, electrical, and/or mechanical feedback of an external feedback path from the output unit to the input unit of said hearing aid, where the hearing aid is configured to receive motion data characterising movement and/or acceleration and/or orientation and/or position of the hearing aid to control processing.