公开(公告)号：US10368175B2

公开(公告)日：2019-07-30

申请号：US15690688

申请日：2017-08-30

申请人： Oticon A/S

发明人： Martin Kuriger ,  Bernhard Kuenzle ,  Meng Guo

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

摘要： 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：US12052546B2

公开(公告)日：2024-07-30

申请号：US17704355

申请日：2022-03-25

申请人： Oticon A/S

发明人： Sudershan Yalgalwadi Sreepadarao ,  Anders Meng ,  Mojtaba Farmani ,  Martin Kuriger ,  Mikkel Grønbech ,  Meng Guo

IPC分类号： H04R25/00

CPC分类号： H04R25/43 ,  H04R25/507 ,  H04R25/554

摘要： 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.

公开(公告)号：US20230254649A1

公开(公告)日：2023-08-10

申请号：US18303052

申请日：2023-04-19

申请人： Oticon A/S

发明人： Bernhard Kuenzle ,  Martin Kuriger ,  Meng Guo

IPC分类号： H04R25/00 ,  H04R3/02

CPC分类号： H04R25/453 ,  H04R3/02 ,  H04R25/505 ,  H04R2225/43 ,  H04R2430/03

摘要： 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：US11825269B2

公开(公告)日：2023-11-21

申请号：US17704828

申请日：2022-03-25

申请人： Oticon A/S

发明人： Meng Guo ,  Bernhard Kuenzle ,  Anders Meng ,  Martin Kuriger ,  Mojtaba Farmani ,  Mikkel Grønbech ,  Sudershan Yalgalwadi Sreepadarao ,  Kim Tilgaard Petersen

IPC分类号： H04R25/00

CPC分类号： H04R25/453 ,  H04R25/505

摘要： 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：US20220210581A1

公开(公告)日：2022-06-30

申请号：US17560611

申请日：2021-12-23

申请人： Oticon A/S

发明人： Bernhard Kuenzle ,  Martin Kuriger ,  Meng Guo

IPC分类号： H04R25/00 ,  H04R3/02

摘要： A hearing aid includes a feedback control system for handling external feedback from an output transducer to an input transducer. The feedback control system includes an open loop gain estimator for providing an instant open loop gain estimate; an adaptive filter configured to provide a current estimate of the feedback path transfer function; a feedback change estimator configured to provide an instant estimate of the feedback path transfer function in dependence of the forward path transfer function, the instant open loop gain estimate; and an adaptive filter controller for providing an update transfer function estimate for the adaptive filter in dependence of the instant estimate of the feedback path transfer function. The hearing aid is configured to use the update transfer function estimate in the adaptive filter to update the current estimate of the feedback path transfer function. A method of detecting a sudden change in a feedback/echo path is further disclosed.

公开(公告)号：US11184714B2

公开(公告)日：2021-11-23

申请号：US16801832

申请日：2020-02-26

申请人： Oticon A/S

发明人： Meng Guo ,  Bernhard Kuenzle ,  Martin Kuriger

IPC分类号： H04R25/00 ,  H03G3/30

摘要： 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：US10966038B2

公开(公告)日：2021-03-30

申请号：US16270784

申请日：2019-02-08

申请人： Oticon A/S

发明人： 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分类号： H04R25/00

摘要： 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：US10659891B2

公开(公告)日：2020-05-19

申请号：US16440140

申请日：2019-06-13

申请人： Oticon A/S

发明人： Martin Kuriger ,  Bernhard Kuenzle ,  Meng Guo

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

摘要： 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：US09980053B2

公开(公告)日：2018-05-22

申请号：US15342917

申请日：2016-11-03

申请人： Oticon A/S ,  Bernafon AG

发明人： Martin Kuriger ,  Christophe Lesimple ,  Neil Hockley ,  Claus Forup Corlin Jespersgaard ,  Thomas Ulrich Christiansen ,  Kamilla Angelo

IPC分类号： H04R25/00

CPC分类号： H04R25/353 ,  H04R25/70 ,  H04R2225/55

摘要： A method of programming a configurable signal processing unit of a hearing aid device comprises Providing a frequency transposition algorithm in the hearing aid device where content from more than one upper-lying source frequency band is copied or moved into one and the same lower lying destination frequency band; Providing a number of frequency transposition configurations, each comprising a specific combination of source regions and a destination region; Providing a weight parameter that specifies the amount of gain applied to a lowered signal resulting from a given frequency transposition configuration; and Providing a prescription algorithm that selects an optimum frequency transposition configuration for an ear of a user taking an audiogram for the ear in question and an amplification capability of the hearing aid device in question into account. A purpose of the disclosure is to provide an improved audibility of high frequency sound for users with severe-to-profound hearing losses.

公开(公告)号：US12089005B2

公开(公告)日：2024-09-10

申请号：US17674041

申请日：2022-02-17

申请人： Oticon A/S

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

IPC分类号： H04R25/00

CPC分类号： H04R25/453 ,  H04R25/505

摘要： 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.