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：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：US20220312129A1

公开(公告)日：2022-09-29

申请号：US17704828

申请日：2022-03-25

Applicant: Oticon A/S

Inventor： Meng GUO ,  Bernhard KUENZLE ,  Anders MENG ,  Martin KURIGER ,  Mojtaba FARMANI ,  Mikkel GRØNBECH ,  Sudershan Yalgalwadi SREEPADARAO ,  Kim Tilgaard PETERSEN

IPC: H04R25/00

Abstract: A hearing aid includes an input unit, an output unit, a signal processing unit connected to the input unit and output unit, where the input unit, the signal processing unit and the output unit form 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 reduction unit configured to reduce risk of howl due to acoustic, electrical, and/or mechanical feedback of an external feedback path from the output unit to the input unit. The feedback reduction unit is configured to modulate the forward gain in time to provide that the forward gain exhibits an increased or unchanged forward gain in one or more first time periods and a reduced forward gain in one or more second time periods.

公开(公告)号：US20220264231A1

公开(公告)日：2022-08-18

申请号：US17673089

申请日：2022-02-16

Applicant: Oticon A/S

Inventor： Meng GUO ,  Anders MENG ,  Bernhard KUENZLE

IPC: H04R25/00

Abstract: A hearing aid includes a forward path including a) an input transducer proving an electric input signal, b) a hearing aid processor, and c) an output transducer. The hearing aid further includes d) a feedback control system having d1) a feedback path estimator including an adaptive filter configured to provide an estimate of a current feedback path from the output transducer to at least one input transducer, the feedback path estimator being controllable via a feedback estimation control input, and d2) a combination unit in the forward path configured to subtract the estimate (v′) of the current feedback path signal (v) from a signal of the forward path (y) to provide a feedback corrected signal (e), and e) a detector for providing the feedback estimation control input in dependence of an offset control signal indicative of an offset in the electric input signal or a signal originating therefrom.

公开(公告)号：US20190297433A1

公开(公告)日：2019-09-26

申请号：US16440140

申请日：2019-06-13

Applicant: Oticon A/S

Inventor： Martin KURIGER ,  Bernhard KUENZLE ,  Meng GUO

IPC: H04R25/00 ,  H04M9/08

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：US20180167747A1

公开(公告)日：2018-06-14

申请号：US15838688

申请日：2017-12-12

Applicant: Oticon A/S

Inventor： Martin KURIGER ,  Bernhard KUENZLE

IPC: H04R25/00 ,  H04S7/00

CPC classification number: H04R25/505 ,  G10L21/0208 ,  G10L2021/02082 ,  H04R25/453 ,  H04R25/558 ,  H04R2225/41 ,  H04R2225/43 ,  H04S7/305

Abstract: The application relates to a method of reducing reverberation in an audio processing device and to an audio processing device. The object of the present application is to provide an alternative method of reducing noise, e.g. reverberation, in a sound signal. The method comprises the steps of a) providing a time variant electric input signal representative of a sound; b) providing a logarithmic representation of said electric input signal; c) providing a predefined statistical model of the likelihood that a specific slope of the logarithmic representation of the electric input signal is due to reverberation; d) identifying time instances of the electric input signal being reverberant according to the statistical model; and e) applying an attenuation to the time instances identified as reverberant. This has the advantage of providing an enhanced sound signal. The invention may e.g. be used for enhancing noisy, e.g. reverberant, signals.

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.