公开(公告)号：US11463820B2

公开(公告)日：2022-10-04

申请号：US17029613

申请日：2020-09-23

申请人： Oticon A/S

发明人： Anders Højsgaard Thomsen ,  Steen Michael Munk ,  Anders Meng

IPC分类号： H04R25/00

摘要： A hearing aid comprises a forward path comprising a) at least two input transducers, each for picking up sound from the environment of the hearing aid and providing respective at least two electric input signals; b) a beamformer filter for filtering said at least two electric input signals or signals originating therefrom and providing a spatially filtered signal; c) a signal processor for processing one or more of said electric input signals or one or more signals originating therefrom, and providing one or more processed signals based thereon; and d) an output transducer for generating stimuli perceivable by the user as sound based on said one or more processed signals. The hearing aid further comprises e) a feedback estimation system for estimating a current feedback from the output transducer to each of the at least two input transducers and providing respective feedback measures indicative thereof; and f) a controller configured to receive said feedback measures from said feedback estimation system and to switch between two modes of operation of the hearing aid, a one-input transducer (e.g. omni-directional) mode of operation, and a multi-input transducer (directional) mode of operation, in dependence of the feedback measures. to. The application further relates to a method of operating a hearing aid. Thereby the gain provided by the hearing aid to the user (without a significant risk of howl) can be maximized.

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：US09769574B2

公开(公告)日：2017-09-19

申请号：US15052308

申请日：2016-02-24

申请人： Oticon A/S

发明人： Michael Smed Kristensen ,  Anders Meng ,  Steen Michael Munk

IPC分类号： H04R25/00

CPC分类号： H04R25/505 ,  H04R25/305 ,  H04R25/453 ,  H04R25/552 ,  H04R2460/03

摘要： The application relates to a hearing device comprising a) a forward path between an input transducer for converting an input sound to an electric input signal and an output transducer for converting an electric output signal to an output sound, the forward path comprising a signal processing unit for applying a level and/or frequency dependent gain to the electric input signal or a signal originating therefrom and for providing a processed signal, and feeding the processed signal or a signal originating therefrom to the output transducer, an acoustic feedback path being defined from said output transducer to said input transducer; b) a configurable anti-feedback system comprising a feedback estimation unit for providing an estimate of said acoustic feedback path; c) a number of detectors, each providing a detector signal for characterizing a signal of the forward path. The object of the present application is to save power in a hearing device. The problem is solved in that the hearing device further comprises an activation control unit configured to control the anti-feedback system based on said detector signals, and to bring the anti-feedback system into one of at least two predefined modes based on said detector signals, said at least two predefined modes comprising an ON-mode and an OFF-mode. The invention may e.g. be used in hearing aids, headsets, ear phones, active ear protection systems, or similar portable devices, where a need for feedback cancellation and low power consumption is important.

公开(公告)号：US09269343B2

公开(公告)日：2016-02-23

申请号：US14090847

申请日：2013-11-26

申请人： OTICON A/S

发明人： Steen Michael Munk ,  Anders Meng

IPC分类号： A61F11/06 ,  G10K11/16 ,  H03B29/00 ,  G10K11/175 ,  H04R3/02 ,  H04R25/00

CPC分类号： G10K11/175 ,  H04R3/02 ,  H04R25/453

摘要： An audio processing device comprises a feedback estimation system for estimating feedback from an output transducer to an input transducer, the feedback estimation system comprising an adaptive filter comprising a variable filter part for filtering an input signal according to variable filter coefficients and an algorithm part comprising an adaptive algorithm for dynamically updating filter coefficients, a control unit for controlling the de-correlation unit and the adaptive algorithm, and a correlation detection unit for determining a) the auto-correlation of a signal of the forward path and providing an AC-value and/or b) the cross-correlation between two different signals of the forward path and providing an XC-value.

摘要翻译： 音频处理装置包括用于估计从输出换能器到输入换能器的反馈的反馈估计系统，所述反馈估计系统包括自适应滤波器，该自适应滤波器包括用于根据可变滤波器系数对输入信号进行滤波的可变滤波器部分，以及包括 用于动态更新滤波器系数的自适应算法，用于控制去相关单元和自适应算法的控制单元，以及相关检测单元，用于确定a）正向路径的信号的自相关性并提供AC值，以及 /或b）正向路径的两个不同信号之间的互相关并提供XC值。