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1. 发明公开

EP2439958A1 A method of determining parameters in an adaptive audio processing algorithm and an audio processing system 有权
标题翻译：在自适应音频处理算法和音频处理系统，用于确定参数的方法
公开(公告)号：EP2439958A1
公开(公告)日：2012-04-11
申请号：EP10186693.7
申请日：2010-10-06
申请人： Oticon A/S
发明人： Guo, Meng , Jensen, Jesper , Elmedyb, Thomas Bo
IPC分类号： H04R3/02 , H04R25/00
CPC分类号： H04R3/02 , H04R25/453 , H04R2430/20
摘要： The application relates to a method of determining a system parameter, e.g. step size, in an adaptive algorithm, e.g. an adaptive feedback cancellation algorithm and to an audio processing system. An object of the present application is to provide an alternative scheme for feedback estimation in a multi-microphone audio processing system. The problem is solved in that a feedback part of the open loop transfer function (OLTF) of the system is estimated and separated in a transient part and a steady state part, which can be used to control the adaptation rate of the adaptive feedback cancellation algorithm by adjusting the system parameter, e.g. step size parameter, of the algorithm when desired system properties, such as a steady state value or a convergence rate of the feedback part of the OLTF, are given/desired. The method can be used for different adaptation algorithms such as LMS, NLMS, RLS, etc. The invention may e.g. be used in hearing aids, headsets, handsfree telephone systems, teleconferencing systems, public address systems, etc.
摘要翻译：本申请涉及确定性采矿的方法的系统参数，E.G. 步长大小，在以自适应算法，E.G. 自适应反馈抵消算法，并向音频处理系统。在本申请的一个目的是提供一种用于在多麦克风音频处理系统反馈估计替代方案。该故障解决在做开环传递的反馈部分该系统的功能（OLTF）被估计并在瞬态部分和稳态部分，其可以用于通过调整系统参数以控制自适应反馈消除算法的自适应速率，例如分离步长参数，该算法当系统需要的属性，检查作为稳态值或OLTF的反馈部分的收敛速度，给出/所需的。该方法可以被用于不同的适应算法：如LMS，NLMS，RLS等。本发明可以例如在助听器，耳机，免提电话系统，电话会议系统，公共广播系统等使用

2. 发明授权

EP2190217B1 Method to reduce feedback in hearing aids and corresponding apparatus and corresponding computer program product 有权
标题翻译：在助听器中，以及相应的装置和相应的计算机程序产品，用于减少反馈的方法
公开(公告)号：EP2190217B1
公开(公告)日：2012-02-22
申请号：EP08105855.4
申请日：2008-11-24
申请人： Oticon A/S
发明人： Pedersen, Michael Syskind , Elmedyb, Thomas Bo , Kjems, Ulrik , Kaulberg, Thomas
IPC分类号： H04R25/00
CPC分类号： H04R25/453 , H04R25/558 , H04R2430/03

3. 发明授权

EP2148526B1 Spectral content modification for robust feedback channel estimation 有权
公开(公告)号：EP2148526B1
公开(公告)日：2020-08-19
申请号：EP08104856.3
申请日：2008-07-24
申请人： Oticon A/S
发明人： Elmedyb, Thomas Bo , Jensen, Jesper
IPC分类号： H04R25/00

4. 发明授权

EP2533551B1 Online anti-feedback system for a hearing aid 失效
标题翻译：用于助听器的在线反馈系统
公开(公告)号：EP2533551B1
公开(公告)日：2017-11-22
申请号：EP12162551.1
申请日：2008-06-04
申请人： Oticon A/S
发明人： Boldt, Jesper Bünsow , Elmedyb, Thomas Bo
IPC分类号： H04R25/00
CPC分类号： H04R25/453 , H04R25/505 , H04R25/552 , H04R25/554 , H04R2430/03 , Y10T29/49005
摘要： The invention relates to a hearing aid system comprising an input transducer, a forward path, an output transducer and an electrical feedback path, the forward path comprising a signal processing unit for modifying an electrical input signal to a specific hearing profile over a predefined frequency range, wherein the predefined frequency range comprises a number of frequency bands, for which maximum forward gain values IG max for each band can be stored in a memory, the electrical feedback path comprising an adaptive filter for estimating acoustical feedback from the output to the input transducer. The invention further relates to a method of adapting a hearing aid system to varying acoustical input signals. The object of the present invention is to provide an alternative acoustic feedback compensation scheme. The object is fulfilled in that the hearing aid system further comprises an online feedback manager unit for - with a predefined update frequency - identifying current feedback gain in each frequency band of the feedback path, and for subsequently adapting the maximum forward gain values in each of the frequency bands in dependence thereof in accordance with a predefined scheme. This has the advantage of providing a diminished probability for disturbing feedback improved feedback cancellation. The invention may e.g. be used in digital hearing aids for use in a variety of acoustical environments.

5. 发明授权

EP2899996B1 Signal enhancement using wireless streaming 有权
标题翻译：使用无线流式传输信号
公开(公告)号：EP2899996B1
公开(公告)日：2017-07-12
申请号：EP14189679.5
申请日：2009-05-18
申请人： Oticon A/S
发明人： Kaulberg, Thomas , Elmedyb, Thomas Bo
IPC分类号： H04R25/00
CPC分类号： H04R25/554 , H04R25/407 , H04R25/43

6. 发明公开

EP2621198A3 Adaptive feedback cancellation based on inserted and/or intrinsic signal characteristics and matched retrieval 审中-公开
标题翻译：一种用于自适应反馈抑制及装置处理
公开(公告)号：EP2621198A3
公开(公告)日：2015-03-25
申请号：EP13164634.1
申请日：2010-03-26
申请人： Oticon A/S
发明人： Jensen, Jesper , Elmedyb, Thomas Bo
IPC分类号： H04R25/00 , H04R3/02
CPC分类号： H04R3/02 , G10K11/17819 , G10K11/17881 , G10K2210/108 , G10K2210/1081 , G10K2210/3055 , H04R25/453 , H04R25/552 , H04R25/554 , H04R2460/01
摘要： The object of the present invention is to provide an alternative scheme for minimizing feedback in audio processing systems. The audio processing system comprises an enhancement unit for estimating noise-like signal components in the electric signal of a forward path and providing a noise signal estimate output, based on filtering by an adaptive noise retrieval filter E of a signal y c from another microphone (e.g. of a contra-lateral listening device), and wherein a feedback path estimation unit is adapted to use the noise signal estimate output in the estimation of an acoustic feedback transfer function.

7. 发明公开

EP2621198A2 Adaptive feedback cancellation based on inserted and/or intrinsic signal characteristics and matched retrieval 审中-公开
标题翻译： Verfahren zur adaptivenRückkopplungsunterdrückungund Vorrichtungdafür
公开(公告)号：EP2621198A2
公开(公告)日：2013-07-31
申请号：EP13164634.1
申请日：2010-03-26
申请人： Oticon A/S
发明人： Jensen, Jesper , Elmedyb, Thomas Bo
IPC分类号： H04R25/00 , H04R3/02
CPC分类号： H04R3/02 , G10K11/17819 , G10K11/17881 , G10K2210/108 , G10K2210/1081 , G10K2210/3055 , H04R25/453 , H04R25/552 , H04R25/554 , H04R2460/01
摘要： The object of the present invention is to provide an alternative scheme for minimizing feedback in audio processing systems. The audio processing system comprises an enhancement unit for estimating noise-like signal components in the electric signal of a forward path and providing a noise signal estimate output, based on filtering by an adaptive noise retrieval filter E of a signal y c from another microphone (e.g. of a contra-lateral listening device), and wherein a feedback path estimation unit is adapted to use the noise signal estimate output in the estimation of an acoustic feedback transfer function.
摘要翻译：本发明的目的是提供一种用于使音频处理系统中的反馈最小化的替代方案。音频处理系统包括用于估计正向路径的电信号中的噪声状信号分量并提供噪声信号估计输出的增强单元，该滤波器基于来自另一麦克风的信号yc的自适应噪声检索滤波器E（例如，的反方向听音装置），并且其中反馈路径估计单元适于在声学反馈传递函数的估计中使用噪声信号估计输出。

8. 发明授权

EP2088802B1 Method of estimating weighting function of audio signals in a hearing aid 有权
标题翻译：一种用于在助听器估计音频信号的加权函数的方法
公开(公告)号：EP2088802B1
公开(公告)日：2013-07-10
申请号：EP08101366.6
申请日：2008-02-07
申请人： OTICON A/S
发明人： Elmedyb, Thomas Bo , Rasmussen, Karsten Bo , Kjems, Ulrik , Pedersen, Michael Syskind , Boldt, Jesper Bünsow
IPC分类号： H04R25/00 , H04R1/40 , H04R3/00
CPC分类号： H04R25/407 , H04R1/406 , H04R25/453 , H04R2225/021 , H04S2420/01

9. 发明公开

EP2442590A3 Method to reduce feed-back in hearing aids 有权
标题翻译：一种用于在助听器中的反馈的方法还原
公开(公告)号：EP2442590A3
公开(公告)日：2012-10-24
申请号：EP12150551.5
申请日：2008-11-24
申请人： Oticon A/S
发明人： Elmedyb, Thomas Bo , Pedersen, Michael Syskind , Kjems, Ulrik , Kaulberg, Thomas
IPC分类号： H04R25/00
CPC分类号： H04R25/453 , H04R25/558 , H04R2430/03
摘要： Disclosed is a method of reducing feedback in a hearing aid system comprising left and right hearing aids, each hearing aid being adapted to be worn by a user and for communicating with each other, the method comprising the step of: receiving an audio input signal in an input transducer in the hearing aid; wherein the method further comprises the steps of: transforming the input signal into the frequency domain; dividing the audio signal into a plurality of frequency bands; determining a threshold frequency over which a plurality of upper frequency bands lies; multiplying each of the plurality of upper frequency bands by a random phase, thereby obtaining a plurality of phase randomized upper frequency bands; synthesizing the plurality of phase randomized upper frequency bands and the lower frequency bands to an output signal; transforming the output signal into the time-domain; and transmitting the output signal to an output transducer of the hearing aid, wherein the same random phase is changed by the same amount in the left and the right hearing aids for each upper frequency band. A hearing aid system comprising left and right hearing aids adapted to communicate with each other is further more disclosed.

10. 发明公开

EP2148526A1 Spectral content modification for robust feedback channel estimation 有权
标题翻译： on ung ung ung ung ung ung ung ung ung ung ung ung ung ung ung ung ung ung ung ung ung ung ung ung
公开(公告)号：EP2148526A1
公开(公告)日：2010-01-27
申请号：EP08104856.3
申请日：2008-07-24
申请人： Oticon A/S
发明人： Elmedyb, Thomas Bo , Jensen, Jesper
IPC分类号： H04R25/00
摘要： The invention relates to a listening device for processing an input sound to an output sound according to a user's needs. The invention further relates to a method of reducing acoustic feedback in a listening device and to the use of a listening device. The object of the present invention is to provide an alternative scheme for feedback estimation in a listening device. The problem is solved in that the listening device comprises an input transducer for converting an input sound to an electric input signal, and an output transducer for converting a processed electric output signal to an output sound, a forward path being defined between the input transducer and the output transducer and comprising a signal processing unit adapted for processing an SPU-input signal originating from the electric input signal in a time-frequency representation comprising successive time frames each comprising a frequency spectrum of the signal in the time frame in question, the signal processing unit defining an input side and an output side of the forward path and comprising a spectral content modification unit adapted for modifying values of the signal of one or more regions of the frequency spectrum of a given time frame to provide that the modified values are less correlated to the corresponding time-frequency regions of the input signal than the unmodified output signal thereby providing an improved processed output signal, and a feedback loop from the output side to the input side comprising a feedback path estimation unit for estimating the effect of acoustic feedback from the output transducer to the input transducer, wherein the feedback path estimation unit is adapted to use the improved processed output signal in the estimation. This has the advantage of providing a better accuracy vs. tracking speed trade-off of the feedback path estimate. The invention may e.g. be used for listening devices prone to acoustic feedback, e.g. hearing aids, headsets or active earplugs.
摘要翻译：本发明涉及一种用于根据用户需要将输入声音处理成输出声音的聆听装置。本发明还涉及一种降低收听装置中的声反馈和使用听音装置的方法。本发明的目的是提供一种用于听音装置中的反馈估计的替代方案。解决的问题在于，听音装置包括用于将输入声音转换为电输入信号的输入换能器和用于将经处理的电输出信号转换为输出声音的输出换能器，在输入换能器和所述输出变换器包括信号处理单元，所述信号处理单元适于在时间 - 频率表示中处理来自所述电输入信号的SPU输入信号，所述时间 - 频率表示包括连续的时间帧，每个时间帧包括所述时间帧中的所述信号的频谱，所述信号处理单元定义前向路径的输入侧和输出侧，并且包括频谱内容修改单元，其适于修改给定时间帧的频谱的一个或多个区域的信号的值，以便修改的值较少与输入信号的相应时间 - 频率区域相比，与未修改的输出si相关从而提供改进的处理输出信号，以及从输出侧到输入侧的反馈回路，包括用于估计从输出换能器到输入换能器的声反馈的影响的反馈路径估计单元，其中反馈路径估计单元适于在估计中使用改进的经处理的输出信号。这具有提供比反馈路径估计的跟踪速度权衡更好的精度的优点。本发明可以例如。用于倾听声反馈的听音装置，例如助听器，耳机或主动耳塞。

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