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：US12137324B2

公开(公告)日：2024-11-05

申请号：US18379411

申请日：2023-10-12

Applicant: Oticon A/S

Inventor： Michael Syskind Pedersen ,  Jan M. De Haan ,  Justyna Walaszek ,  Anders Vinther Olsen ,  Karsten Bonke ,  Matias Tofteby Bach ,  Sigurdur Sigurdsson ,  Mojtaba Farmani ,  Andreas Thelander Bertelsen ,  Angela Josupeit ,  Claus Forup Corlin Jespersgaard ,  Gusztáv Lõcsei

IPC: H04R25/00

Abstract: A binaural hearing aid system includes first and second hearing aids configured to be worn by a user at or in respective first and second ears of the user, each of the first and second hearing aids including: at least one input transducer configured to pick up a sound at the at least one input transducer and to convert the sound to at least one electric input signal representative of the sound, the sound at the at least one input transducer including a mixture of a target signal and noise; a controller for evaluating the sound at the at least one input transducer and providing a control signal indicative of a property of the sound; a transceiver configured to establish a communication link between the first and second hearing aids allowing the exchange of the control signal between the first and second hearing aids; a transmitter for establishing an audio link for transmitting the at least one electric input signal, or a processed version thereof, to another device. The controller is configured to: transmit the locally provided control signal to, and receive a corresponding remotely provided control signal from the opposite hearing aid via the communication link, and to compare the locally provided and the remotely provided control signals and to provide a comparison control signal in dependence thereof, and to transmit the at least one electric input signal, or a processed version thereof, to the another device via the audio link in dependence of the comparison control signal.

公开(公告)号：US09992587B2

公开(公告)日：2018-06-05

申请号：US15669020

申请日：2017-08-04

Applicant: Oticon A/S

Inventor： Mojtaba Farmani ,  Michael Syskind Pedersen ,  Jesper Jensen

IPC: H04R5/00 ,  H04R25/00

CPC classification number: H04R25/552 ,  G10L21/0216 ,  H04R25/405 ,  H04R25/407 ,  H04R25/505 ,  H04R25/554 ,  H04S2420/01

Abstract: A hearing aid system comprising a pair of hearing devices, e.g. hearing aids, worn at the ears of a user receives a target signal generated by a target signal source and transmitted through an acoustic channel to microphones of the hearing aid system. Due to (potential) additive environmental noise, a noisy acoustic signal is received at the microphones of the hearing system. An essentially noise-free version of the target signal is simultaneously transmitted to the hearing devices of the hearing system via a wireless connection. Based on a sound propagation model of the acoustic propagation channel from the target sound source to the microphones of the hearing aid system, and on relative transfer functions representing direction-dependent filtering effects of the head and torso of the user in the form of direction-dependent acoustic transfer functions from a microphone on one side of the head, to a microphone on the other side of the head, a direction-of-arrival (DoA) of the target sound signal relative to the user is determined using a maximum likelihood approach.

公开(公告)号：US10966038B2

公开(公告)日：2021-03-30

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

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：US12052546B2

公开(公告)日：2024-07-30

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

CPC classification number: H04R25/43 ,  H04R25/507 ,  H04R25/554

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.

公开(公告)号：US10431239B2

公开(公告)日：2019-10-01

申请号：US16212405

申请日：2018-12-06

Applicant: Oticon A/S

Inventor： Jesper Jensen ,  Michael Syskind Pedersen ,  Mojtaba Farmani ,  Pauli Minnaar

IPC: H04R25/00 ,  G10L21/0232 ,  H04R5/033 ,  H04R1/10 ,  H04S7/00

Abstract: The present disclosure regards a hearing device configured to receive acoustical sound signals and to generate output sound signals comprising spatial cues.

公开(公告)号：US09980055B2

公开(公告)日：2018-05-22

申请号：US15290643

申请日：2016-10-11

Applicant: Oticon A/S

Inventor： Jesper Jensen ,  Mojtaba Farmani ,  Michael Syskind Pedersen

IPC: H04R5/00 ,  H04R25/00

CPC classification number: H04R25/407 ,  G01S3/8036 ,  G01S3/8083 ,  H04R25/405 ,  H04R25/552 ,  H04R25/554 ,  H04R2420/01

Abstract: The problem of estimating the direction to one or more sound sources of interest relative to a user wearing a pair of hearing devices, e.g. hearing aids, is dealt with. A target signal is generated by a target signal source and transmitted through an acoustic channel to a microphone of a hearing system. Due to additive environmental noise, a noisy acoustic signal is received at the microphones of the hearing system. An essentially noise-free version of the target signal is transmitted to the hearing devices of the hearing system via a wireless connection. Each of the hearing devices comprises a signal processing unit comprising a sound propagation model of the acoustic propagation channel from the target sound source to the hearing device when worn by the user. The sound propagation model is configured to be used for estimating a direction-of-arrival of the target sound signal relative to the user.

公开(公告)号：US12114133B2

公开(公告)日：2024-10-08

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

CPC classification number: H04R25/453 ,  H04R25/305 ,  H04R25/505 ,  H04R25/603 ,  H04R25/604

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：US11825270B2

公开(公告)日：2023-11-21

申请号：US17512125

申请日：2021-10-27

Applicant: Oticon A/S

Inventor： Michael Syskind Pedersen ,  Jan M. De Haan ,  Justyna Walaszek ,  Anders Vinther Olsen ,  Karsten Bonke ,  Matias Tofteby Bach ,  Sigurdur Sigurdsson ,  Mojtaba Farmani ,  Andreas Thelander Bertelsen ,  Angela Josupeit ,  Claus Forup Corlin Jespersgaard ,  Gusztáv Lõcsei

IPC: H04R25/00

CPC classification number: H04R25/505 ,  H04R25/405 ,  H04R25/407 ,  H04R25/552 ,  H04R25/604 ,  H04R25/609 ,  H04R2225/43 ,  H04R2225/55

Abstract: A binaural hearing aid system includes first and second hearing aids configured to be worn by a user at or in respective first and second ears of the user, each of the first and second hearing aids including: at least one input transducer configured to pick up a sound at the at least one input transducer and to convert the sound to at least one electric input signal representative of the sound, the sound at the at least one input transducer including a mixture of a target signal and noise; a controller for evaluating the sound at the at least one input transducer and providing a control signal indicative of a property of the sound; a transceiver configured to establish a communication link between the first and second hearing aids allowing the exchange of the control signal between the first and second hearing aids; a transmitter for establishing an audio link for transmitting the at least one electric input signal, or a processed version thereof, to another device. The controller is configured to: transmit the locally provided control signal to, and receive a corresponding remotely provided control signal from the opposite hearing aid via the communication link, and to compare the locally provided and the remotely provided control signals and to provide a comparison control signal in dependence thereof, and to transmit the at least one electric input signal, or a processed version thereof, to the another device via the audio link in dependence of the comparison control signal.

公开(公告)号：US11825269B2

公开(公告)日：2023-11-21

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

CPC classification number: H04R25/453 ,  H04R25/505

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.