公开(公告)号：US20230074554A1

公开(公告)日：2023-03-09

申请号：US17903696

申请日：2022-09-06

Applicant: Oticon A/S

Inventor： Sudershan Yalgalwadi SREEPADARAO ,  Anders MENG ,  Meng GUO ,  Mojtaba FARMANI ,  Martin KURIGER ,  Mikkel GRØNBECH ,  Nels Hede ROHDE ,  Thomas JENSEN

IPC: H04R25/00

Abstract: A hearing aid configured to be worn by a user, the hearing aid comprising a user interface allowing the user to control functionality of the hearing aid, and a feedback sensor for repeatedly providing a feedback signal indicative of a current estimate of feedback from an output transducer to an input transducer of the hearing aid, wherein the user interface is based on changes to the current estimate of the feedback path, e.g. provided by the user. A method of operating a hearing aid is further disclosed. Thereby an alternative user interface for a hearing aid may be provided. The invention may e.g. be used in hearing aids or headsets, or a combination thereof.

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：US20220264232A1

公开(公告)日：2022-08-18

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

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：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.