公开(公告)号：US11862138B2

公开(公告)日：2024-01-02

申请号：US17684723

申请日：2022-03-02

Applicant: Oticon A/S

Inventor： Bernhard Kuenzle ,  Meng Guo

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

CPC classification number: G10K11/17813 ,  G10L21/0232 ,  H04R1/1016 ,  H04R1/1041 ,  H04R1/1091

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.

公开(公告)号：US20230254649A1

公开(公告)日：2023-08-10

申请号：US18303052

申请日：2023-04-19

Applicant: Oticon A/S

Inventor： Bernhard Kuenzle ,  Martin Kuriger ,  Meng Guo

IPC: H04R25/00 ,  H04R3/02

CPC classification number: H04R25/453 ,  H04R3/02 ,  H04R25/505 ,  H04R2225/43 ,  H04R2430/03

Abstract: A method of detecting a sudden change in a feedback/echo path of a hearing aid is based on a gradient of an adaptive filter comprising an adaptive algorithm configured to estimate the feedback/echo path. The method may comprise comparing a smoothed and processed version of the gradient values over time to a threshold value. A hearing aid configured to detect a sudden change in a feedback/echo path is furthermore provided.

公开(公告)号：US10375490B2

公开(公告)日：2019-08-06

申请号：US15725067

申请日：2017-10-04

Applicant: Oticon A/S

Inventor： Jesper Jensen ,  Meng Guo ,  Richard Heusdens ,  Richard Hendriks ,  Jamal Amini

IPC: H04R25/00

Abstract: The application relates to a hearing device adapted for being located at or in a first ear of a user, or to be fully or partially implanted in the head at a first ear of a user, the hearing device comprising a first input transducer for converting a first input sound signal from a sound field around the user at a first location, the first location being a location of the first input transducer, to a first electric input signal, the sound field comprising a mixture of a target sound from a target sound source and possible acoustic noise; a transceiver unit configured to receive a first quantized electric input signal via a communication link, the first quantized electric input signal being representative of the sound field around the user at a second location, the first quantized electric input signal comprising quantization noise due to a specific quantization scheme; a beamformer filtering unit adapted to receive said first electric input signal and said quantized electric input signal and to determine beamformer filtering weights, which, when applied to said first electric input signal and said quantized electric input signal, provide a beamformed signal, and a control unit adapted to control the beamformer filtering unit, wherein the control unit is configured to control the beamformer filtering unit taking account of said quantization noise. The invention may e.g. be used for the hearing aids and other portable electronic devices with limited power capacity.

公开(公告)号：US09635473B2

公开(公告)日：2017-04-25

申请号：US14855979

申请日：2015-09-16

Applicant: OTICON A/S

Inventor： Meng Guo ,  Jan Mark de Haan ,  Jesper Jensen

IPC: H04R25/00 ,  H04R3/00 ,  H04R5/033

CPC classification number: H04R25/405 ,  H04R3/005 ,  H04R5/033 ,  H04R25/407 ,  H04R25/505 ,  H04R2225/67 ,  H04R2430/25

Abstract: The application relates to a hearing device comprising a beamformer of the generalized sidelobe canceler (GSC) type. The application further relates to a method of operating a hearing device. The disclosure addresses a problem which occurs when using a GSC structure in a hearing device application. The problem arises due to a non-ideal target-cancelling beamformer. As a consequence, a target signal impinging from the look direction can—unintentionally—be attenuated by as much as 30 dB. To resolve this problem, it is proposed to monitor the difference between the output signals from the all-pass beamformer and the target-cancelling beamformer to control a time-varying regularization parameter in the GSC update. This has the advantage of providing a computationally simple solution to the non-ideality of the GSC beamformer. The invention may e.g. be used in hearing aids, headsets, ear phones, active ear protection systems, or combinations thereof.

公开(公告)号：US09615184B2

公开(公告)日：2017-04-04

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.

公开(公告)号：US12256197B2

公开(公告)日：2025-03-18

申请号：US18499519

申请日：2023-11-01

Applicant: Oticon A/S

Inventor： Thomas Behrens ,  Michael Syskind Pedersen ,  Meng Guo

IPC: H04R25/00

Abstract: A hearing aid includes a forward path for processing sound from the user's environment. The forward path includes a) a first microphone providing a first electric input signal representing sound as received at the first microphone, the first microphone being located away from an ear canal of the user, b) an audio signal processor for processing the 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 the processed signal, and d) a second microphone configured to provide a second electric input signal representing sound received at the second microphone, the second microphone being located at or in the user's ear canal, and e) a feature extractor for extracting acoustic characteristics of the user's ear from the second electric input signal, or a signal originating therefrom.

公开(公告)号：US10932066B2

公开(公告)日：2021-02-23

申请号：US16271557

申请日：2019-02-08

Applicant: Oticon A/S

Inventor： Michael Syskind Pedersen ,  Svend Oscar Petersen ,  Meng Guo ,  Karsten Bo Rasmussen ,  Troels Holm Pedersen ,  Kenneth Rueskov Møller

IPC: H04R25/00

Abstract: A hearing device, e.g. a hearing aid, comprises a) a multitude of input transducers for providing respective electric input signals representing sound in an environment of the user; b) an output transducer for providing stimuli perceivable to the user as sound based on said electric input signals or a processed version thereof; c) an adaptive beamformer filtering unit connected to said input unit and to said output unit, and configured to provide a spatially filtered signal based on said multitude of electric input signals and adaptively updated beamformer weights; and d) a feedback estimation unit providing feedback estimates of current feedback paths from said output transducer to each of said input transducers. The hearing device is configured to provide that at least one of said adaptively updated beamformer weights of the adaptive beamformer filtering unit is/are updated in dependence of said feedback path estimates. The application further relates to a method of suppressing feedback.

公开(公告)号：US10368175B2

公开(公告)日：2019-07-30

申请号：US15690688

申请日：2017-08-30

Applicant: Oticon A/S

Inventor： Martin Kuriger ,  Bernhard Kuenzle ,  Meng Guo

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

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：US12089005B2

公开(公告)日：2024-09-10

申请号：US17674041

申请日：2022-02-17

Applicant: Oticon A/S

Inventor： Meng Guo ,  Anders Meng ,  Martin Kuriger ,  Mojtaba Farmani ,  Mikkel Grønbech ,  Sudershan Y.S

IPC: H04R25/00

CPC classification number: H04R25/453 ,  H04R25/505

Abstract: A hearing aid comprises a forward path comprising an input transducer an electric input signals representing a sound comprising target signal components and background noise, a hearing aid processor for providing a processed signal in dependence of said at least one electric input signal and for providing a processed output signal in dependence thereof, and an output transducer for providing stimuli perceivable as sound to the user in dependence of said processed signal. The forward path provides a frequency dependent intended forward path transfer function. The hearing aid further comprises a feedback path estimator configured to provide a current frequency dependent estimate of a feedback path transfer function of a feedback path from the output transducer to the input transducer, and a current feedback path estimate in dependence of the current estimate of the feedback path transfer function and of the processed signal, and a combination unit in the forward path configured to subtract the current feedback path estimate from a signal of the forward path to provide a feedback corrected signal. The hearing aid may further comprise a noise estimator configured to provide a current frequency dependent noise estimate representing a background noise level in the at least one electric input signal, an open loop transfer function estimator configured to provide a frequency dependent estimate of a current open loop transfer function in dependence of the intended forward path transfer function and the current estimate of the feedback transfer function, and a confidence level estimator configured to provide a current frequency dependent estimate of a confidence level of the current estimate of the feedback transfer function in dependence of a current estimate of open loop gain and optionally the current noise estimate. The hearing aid may be configured to control processing in the hearing aid in a frequency band k in dependence of said current estimate of the open loop transfer function and/or the current estimate of the feedback path transfer function, if the current estimate of the confidence level fulfils a confidence criterion in said frequency band k. A method of operating a hearing aid is further disclosed. The invention may e.g. be used to assess a risk of acoustic feedback in a hearing aid.

公开(公告)号：US11843917B2

公开(公告)日：2023-12-12

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

CPC classification number: H04R25/407 ,  H04R25/453

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.