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1. 发明授权

US08804979B2 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中确定参数的方法
公开(公告)号：US08804979B2
公开(公告)日：2014-08-12
申请号：US13267624
申请日：2011-10-06
申请人： Thomas Bo Elmedyb , Jesper Jensen , Meng Guo
发明人： Thomas Bo Elmedyb , Jesper Jensen , Meng Guo
IPC分类号： H04B15/00
CPC分类号： H04R3/02 , H04R25/453 , H04R2430/20
摘要： A method and an audio processing system determine a system parameter, e.g. step size, in an adaptive algorithm, e.g. an adaptive feedback cancellation algorithm so as to provide an alternative scheme for feedback estimation in a multi-microphone audio processing system. A feedback part of the system's open loop transfer function 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, are given/desired. The method can be used for different adaptation algorithms such as LMS, NLMS, RLS, etc. in hearing aids, headsets, handsfree telephone systems, teleconferencing systems, public address systems, etc.
摘要翻译：方法和音频处理系统确定系统参数，例如，步长，在自适应算法中，例如。自适应反馈消除算法，以便在多麦克风音频处理系统中提供用于反馈估计的替代方案。系统的开环传递函数的反馈部分在瞬态部分和稳态部分中进行估计和分离，稳态部分可用于通过调整系统参数来控制自适应反馈消除算法的自适应速率。给定/期望所需的系统特性（如稳定状态值或反馈的收敛速度）时的算法的步长参数。该方法可用于助听器，耳机，免提电话系统，电话会议系统，公共广播系统等不同适应算法，如LMS，NLMS，RLS等。

2. 发明申请

US20100020995A1 SYSTEM FOR REDUCING ACOUSTIC FEEDBACK IN HEARING AIDS USING INTER-AURAL SIGNAL TRANSMISSION, METHOD AND USE 有权
标题翻译：使用内部信号传输，方法和使用来减少听觉艾滋病中的声学反馈的系统
公开(公告)号：US20100020995A1
公开(公告)日：2010-01-28
申请号：US12506635
申请日：2009-07-21
申请人： Thomas Bo ELMEDYB , Jesper Jensen , Meng Guo
发明人： Thomas Bo ELMEDYB , Jesper Jensen , Meng Guo
IPC分类号： H04R25/00
CPC分类号： H04R25/552 , H04R5/033 , H04R25/453
摘要： The invention relates to a hearing aid system comprising first and second spatially separated hearing instruments, the system being adapted for processing input sounds to output sounds according to a user's needs. The invention further relates to a method and use. The object of the present invention is to provide an alternative scheme for reducing the effect of acoustic feedback in a hearing aid system. The problem is solved in that the hearing instruments comprises, respectively, first and second input transducers for converting a first input sound to first and second electric input signal, and first and second output transducers for converting first and second processed electric output signal to first and second output sounds, wherein the system is adapted to provide that a first Tx-signal originating from the first electric input signal of the first hearing instrument is transmitted to the second hearing instrument and used in the formation of the second processed electric output signal, and that a second Tx-signal originating from the second electric input signal of the second hearing instrument is transmitted to the first hearing instrument and used in the formation of the first processed electric output signal. This has the advantage of providing a scheme for reducing or effectively eliminating acoustic feedback in a pair of hearing instruments. The invention may e.g. be used in listening devices, e.g. hearing aids, head sets, or active ear plugs.
摘要翻译：本发明涉及一种包括第一和第二空间分离的听力仪器的助听器系统，该系统适于根据用户的需要处理输入声音以输出声音。本发明还涉及一种方法和用途。本发明的目的是提供一种用于减少助听器系统中声反馈的影响的替代方案。解决的问题在于，听力仪器分别包括用于将第一输入声音转换为第一和第二电输入信号的第一和第二输入换能器，以及用于将第一和第二处理电输出信号转换为第一和第二输入信号的第一和第二输出换能器第二输出声音，其中所述系统适于提供源自所述第一听力仪器的第一电输入信号的第一Tx信号被发送到所述第二听力仪器并用于形成所述第二处理电输出信号，以及来自第二听力仪器的第二电输入信号的第二Tx信号被发送到第一听力仪器，并用于形成第一处理电输出信号。这具有提供用于减少或有效地消除一对听力仪器中的声反馈的方案的优点。本发明可以例如用于听音装置，例如助听器，头戴式耳塞或有源耳塞。

3. 发明授权

US08542855B2 System for reducing acoustic feedback in hearing aids using inter-aural signal transmission, method and use 有权
标题翻译：使用听觉信号传输，方法和用途减少助听器中的声反馈的系统
公开(公告)号：US08542855B2
公开(公告)日：2013-09-24
申请号：US12506635
申请日：2009-07-21
申请人： Thomas Bo Elmedyb , Jesper Jensen , Meng Guo
发明人： Thomas Bo Elmedyb , Jesper Jensen , Meng Guo
IPC分类号： H04R25/00
CPC分类号： H04R25/552 , H04R5/033 , H04R25/453
摘要： The invention relates to a hearing aid system comprising first and second spatially separated hearing instruments, the system being adapted for processing input sounds to output sounds according to a user's needs. The invention further relates to a method and use. The object of the present invention is to provide an alternative scheme for reducing the effect of acoustic feedback in a hearing aid system. The problem is solved in that the hearing instruments comprises, respectively, first and second input transducers for converting a first input sound to first and second electric input signal, and first and second output transducers for converting first and second processed electric output signal to first and second output sounds, wherein the system is adapted to provide that a first Tx-signal originating from the first electric input signal of the first hearing instrument is transmitted to the second hearing instrument and used in the formation of the second processed electric output signal, and that a second Tx-signal originating from the second electric input signal of the second hearing instrument is transmitted to the first hearing instrument and used in the formation of the first processed electric output signal. This has the advantage of providing a scheme for reducing or effectively eliminating acoustic feedback in a pair of hearing instruments. The invention may e.g. be used in listening devices, e.g. hearing aids, head sets, or active ear plugs.
摘要翻译：本发明涉及一种包括第一和第二空间分离的听力仪器的助听器系统，该系统适于根据用户的需要处理输入声音以输出声音。本发明还涉及一种方法和用途。本发明的目的是提供一种用于减少助听器系统中声反馈的影响的替代方案。解决的问题在于，听力仪器分别包括用于将第一输入声音转换为第一和第二电输入信号的第一和第二输入换能器，以及用于将第一和第二处理电输出信号转换为第一和第二输入信号的第一和第二输出换能器第二输出声音，其中所述系统适于提供源自所述第一听力仪器的第一电输入信号的第一Tx信号被发送到所述第二听力仪器并用于形成所述第二处理电输出信号，以及来自第二听力仪器的第二电输入信号的第二Tx信号被发送到第一听力仪器，并用于形成第一处理电输出信号。这具有提供用于减少或有效地消除一对听力仪器中的声反馈的方案的优点。本发明可以例如用于听音装置，例如助听器，头戴式耳塞或有源耳塞。

4. 发明授权

US08442251B2 Adaptive feedback cancellation based on inserted and/or intrinsic characteristics and matched retrieval 有权
标题翻译：基于插入和/或固有特征和匹配检索的自适应反馈消除
公开(公告)号：US08442251B2
公开(公告)日：2013-05-14
申请号：US12681265
申请日：2010-04-01
申请人： Jesper Jensen , Thomas Bo Elmedyb
发明人： Jesper Jensen , Thomas Bo Elmedyb
IPC分类号： H04R25/00
CPC分类号： H04R25/453 , H04R3/02
摘要： An audio processing system processing an input sound to an output sound includes: an input transducer for converting input sound to an electric input signal and defining an input side; an output transducer for converting a processed electric output signal to an output sound and defining an output side; a forward path defined between the input transducer and the output transducer; a signal processing unit for processing an SPU-input signal originating from the electric input signal and to provide a processed SPU-output signal, and an electric feedback loop from the output side to the input side, having a feedback path estimation unit for estimating an acoustic feedback transfer function from the output transducer to the input transducer, and a enhancement unit for estimating noise-like signal components in the electric signal of the forward path and providing a noise signal estimate output.
摘要翻译：将输入声音处理为输出声音的音频处理系统包括：输入转换器，用于将输入声音转换为电输入信号并限定输入侧; 输出传感器，用于将经处理的电输出信号转换为输出声音并限定输出侧; 在输入传感器和输出换能器之间限定的前进路径; 信号处理单元，用于处理从电输入信号产生的SPU输入信号并提供经处理的SPU输出信号和从输出侧到输入侧的电反馈回路，具有反馈路径估计单元，用于估计从输出变换器到输入变换器的声反馈传递函数，以及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。

5. 发明申请

US20110311075A1 SPECTRAL BAND SUBSTITUTION TO AVOID HOWLS AND SUB-OSCILLATION 有权
标题翻译：光谱带取代避免HOWLS和SUB-OSCILLATION
公开(公告)号：US20110311075A1
公开(公告)日：2011-12-22
申请号：US13146849
申请日：2009-02-06
申请人： Thomas Bo Elmedyb , Jesper Jensen
发明人： Thomas Bo Elmedyb , Jesper Jensen
IPC分类号： H04B15/00
CPC分类号： H04R25/453 , H04R3/02 , H04R25/353 , H04R2430/03
摘要： A listening device for processing an input sound to an output sound, includes an input transducer for converting an input sound to an electric input signal, 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 including a signal processing unit for processing an input signal in a number of frequency bands and an SBS unit for performing spectral band substitution from one frequency band to another and providing an SBS-processed output signal, and an LG-estimator unit for estimating loop gain in each frequency band thereby identifying plus-bands having an estimated loop gain according to a plus-criterion and minus-bands having an estimated loop gain according to a minus-criterion. Based on an input from the LG-estimator unit, the SBS unit is adapted for substituting spectral content in a receiver band of the input signal with spectral content from a donor band in such a way that spectral content of the donor band is copied and possibly scaled with a scaling function and inserted in the receiver band instead of its original spectral content, wherein the receiver band is a plus-band and the donor band is a minus-band.
摘要翻译：用于处理输出声音到输出声音的收听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，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，输入传感器和输出变换器，并且包括用于处理多个频带中的输入信号的信号处理单元和用于从一个频带到另一个频带进行频谱带替换并提供经SBS处理的输出信号的SBS单元，以及LG 估计单元，用于估计每个频带中的环路增益，从而根据具有根据负准则的估计环路增益的正准则和负频带来识别具有估计环路增益的加频带。基于来自LG估计器单元的输入，SBS单元适于用来自施主频带的频谱内容来替代输入信号的接收机频带中的频谱内容，使得复制供体频带的频谱内容，并且可能用缩放函数缩放并插入接收机频带而不是其原始频谱内容，其中接收机频带是正频带，供体频带是负频带。

6. 发明申请

US20100020979A1 ADAPTIVE LONG-TERM PREDICTION FILTER FOR ADAPTIVE WHITENING 有权
标题翻译：适应性长期自适应长期预测滤波器
公开(公告)号：US20100020979A1
公开(公告)日：2010-01-28
申请号：US12506983
申请日：2009-07-21
申请人： Thomas Bo ELMEDYB , Jesper Jensen
发明人： Thomas Bo ELMEDYB , Jesper Jensen
IPC分类号： H04R29/00 , H04R25/00
CPC分类号： H04R25/453 , H04R5/033
摘要： The invention relates to a hearing instrument for processing an input sound to an output sound according to a user's needs. The invention further relates to a method of estimating acoustic feedback in a hearing instrument. The object of the present invention is to reduce the impact of tonal components in the target input signal on the quality of the estimate of acoustic feedback. The problem is solved in that hearing instrument 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 defining an input side and an output side of the forward path, a feedback loop from the output side to the input side comprising a feedback cancellation system for estimating the effect of acoustic feedback from the output transducer to the input transducer, the feedback cancellation system comprising a feedback path estimation unit receiving first and second estimation input signals from the input and output side of the forward path, respectively, wherein the first and second estimation input signal paths comprise first and second long term prediction filters P(z) each having an input and an output, the feedback cancellation system being adapted to provide that the variable parameters of at least one of the long term prediction filters are estimated based on the input signal to the filter in question. Embodiments of the invention have the advantage of leading to better feedback cancellation, even for tonal input signals. The invention may e.g. be used for the hearing instruments or headsets.
摘要翻译：本发明涉及一种用于根据用户需要处理输出声音到输出声音的听力仪器。本发明还涉及一种在听力仪器中估计声反馈的方法。本发明的目的是减少目标输入信号中的音调分量对声反馈估计质量的影响。解决的问题在于，听力仪器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，在输入换能器和输出端之间限定正向通路换能器并且包括限定正向路径的输入侧和输出侧的信号处理单元，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端的声反馈的影响的反馈消除系统所述反馈消除系统包括反馈路径估计单元，其分别从所述正向路径的输入和输出侧接收第一和第二估计输入信号，其中所述第一和第二估计输入信号路径包括第一和第二长期预测滤波器P （z），每个具有输入和输出，反馈消除系统bei ng适于提供基于所讨论的滤波器的输入信号来估计长期预测滤波器中的至少一个的可变参数。本发明的实施例具有导致更好的反馈消除的优点，即使对于音调输入信号也是如此。本发明可以例如用于听力仪器或耳机。

7. 发明授权

US08953818B2 Spectral band substitution to avoid howls and sub-oscillation 有权
标题翻译：光谱带替代避免啸叫和次振荡
公开(公告)号：US08953818B2
公开(公告)日：2015-02-10
申请号：US13146849
申请日：2009-02-06
申请人： Thomas Bo Elmedyb , Jesper Jensen
发明人： Thomas Bo Elmedyb , Jesper Jensen
IPC分类号： G10L21/0208 , H04R3/02 , H04R25/00
CPC分类号： H04R25/453 , H04R3/02 , H04R25/353 , H04R2430/03
摘要： A listening device for processing an input sound to an output sound, includes an input transducer for converting an input sound to an electric input signal, 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 including a signal processing unit for processing an input signal in a number of frequency bands and an SBS unit for performing spectral band substitution from one frequency band to another and providing an SBS-processed output signal, and an LG-estimator unit for estimating loop gain in each frequency band thereby identifying plus-bands having an estimated loop gain according to a plus-criterion and minus-bands having an estimated loop gain according to a minus-criterion. Based on an input from the LG-estimator unit, the SBS unit is adapted for substituting spectral content in a receiver band of the input signal with spectral content from a donor band in such a way that spectral content of the donor band is copied and possibly scaled with a scaling function and inserted in the receiver band instead of its original spectral content, wherein the receiver band is a plus-band and the donor band is a minus-band.
摘要翻译：用于处理输出声音到输出声音的收听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，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，输入传感器和输出变换器，并且包括用于处理多个频带中的输入信号的信号处理单元和用于从一个频带到另一个频带进行频谱带替换并提供经SBS处理的输出信号的SBS单元，以及LG 估计单元，用于估计每个频带中的环路增益，从而根据具有根据负准则的估计环路增益的正准则和负频带来识别具有估计环路增益的加频带。基于来自LG估计器单元的输入，SBS单元适于用来自施主频带的频谱内容来替代输入信号的接收机频带中的频谱内容，使得复制供体频带的频谱内容，并且可能用缩放函数缩放并插入接收机频带而不是其原始频谱内容，其中接收机频带是正频带，供体频带是负频带。

8. 发明申请

US20110150257A1 ADAPTIVE FEEDBACK CANCELLATION BASED ON INSERTED AND/OR INTRINSIC CHARACTERISTICS AND MATCHED RETRIEVAL 有权
标题翻译：基于插入和/或内在特征的自适应反馈消除和匹配检索
公开(公告)号：US20110150257A1
公开(公告)日：2011-06-23
申请号：US12681265
申请日：2009-04-02
申请人： Jesper Jensen , Thomas Bo Elmedyb
发明人： Jesper Jensen , Thomas Bo Elmedyb
IPC分类号： H04R25/00
CPC分类号： H04R25/453 , H04R3/02
摘要： The invention relates to an audio processing system for processing an input sound to an output sound. The invention further relates to a method of estimating a feedback transfer function in an audio processing system. The object of the present invention is to provide an alternative scheme for minimizing feedback in audio processing systems. The problem is solved in that the audio processing system comprises an input transducer for converting an input sound to an electric input signal and defining an input side, an output transducer for converting a processed electric output signal to an output sound and defining an output side, 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 and to provide a processed SPU-output signal, and an electric feedback loop from the output side to the input side comprising a feedback path estimation unit for estimating an acoustic feedback transfer function from the output transducer to the input transducer, and a enhancement unit for estimating noise-like signal components in the electric signal of the forward path and providing a noise signal estimate output, wherein the feedback path estimation unit is adapted to use the noise signal estimate output in the estimation of the acoustic feedback transfer function. This has the advantage of providing an adaptive feedback cancellation system which is robust in situations with a high degree of correlation between the output signal and the input signal of an audio processing system, e.g. a listening device. The invention may e.g. be used in public address systems, entertainment systems, hearing aids, head sets, mobile phones, wearable/portable communication devices, etc.
摘要翻译：本发明涉及一种用于将输入声音处理为输出声音的音频处理系统。本发明还涉及一种估计音频处理系统中的反馈传递函数的方法。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。解决的问题在于音频处理系统包括用于将输入声音转换为电输入信号并限定输入侧的输入换能器，用于将经处理的电输出信号转换为输出声音并定义输出侧的输出换能器，在输入传感器和输出换能器之间限定正向路径，并且包括适于处理来自电输入信号的SPU输入信号并提供经处理的SPU输出信号的信号处理单元，以及来自输入侧到输入侧，包括用于从输出换能器向输入换能器估计声反馈传递函数的反馈路径估计单元，以及用于估计前进路径的电信号中的类噪声信号分量的增强单元，噪声信号估计输出，其中所述反馈路径估计单元适于使用所述噪声信号估计声反馈传递函数的估计输出。这具有提供自适应反馈消除系统的优点，该系统在输出信号和音频处理系统的输入信号之间具有高度相关性的情况下是鲁棒的，例如，听力装置。本发明可以例如用于公共广播系统，娱乐系统，助听器，头戴式耳机，手机，穿戴式/便携式通信设备等。

9. 发明申请

US20100020996A1 CODEBOOK BASED FEEDBACK PATH ESTIMATION 有权
标题翻译：基于CODEBOOK的反馈路径估计
公开(公告)号：US20100020996A1
公开(公告)日：2010-01-28
申请号：US12506793
申请日：2009-07-21
申请人： Thomas Bo Elmedyb , Jesper Jensen
发明人： Thomas Bo Elmedyb , Jesper Jensen
IPC分类号： H04R25/00
CPC分类号： H04R25/453 , H04R25/70
摘要： The invention relates to a hearing instrument for processing an input sound to an output sound according to a user's needs. The invention further relates to a method of operating a hearing instrument and to use of a hearing instrument. The object of the present invention is to provide an alternative scheme for handling acoustic feedback in a hearing instrument. The problem is solved in that 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, a feedback cancellation system for estimating the effect of acoustic feedback from the output transducer to the input transducer, the feedback cancellation system comprising a variable pre-estimated filter and a memory wherein a number of predetermined feedback channel impulse responses corresponding to a number of acoustic environments where substantial feedback is experienced are stored, and wherein the hearing instrument comprises a monitoring unit that—based on the current acoustic environment—is adapted to choose the currently most appropriate impulse response of the variable pre-estimated filter among the stored impulse responses. This has the advantage of providing a scheme for handling acoustic feedback that can adapt relatively fast to changing acoustic environments. The invention may e.g. be used in listening devices, such as hearing aids, head sets or active ear plugs, wherein customized feedback compensation is an issue.
摘要翻译：本发明涉及一种用于根据用户需要处理输出声音到输出声音的听力仪器。本发明还涉及一种操作听力仪器和使用听力仪器的方法。本发明的目的是提供一种用于处理听力仪器中的声反馈的替代方案。解决的问题在于，用于将输入声音转换为电输入信号的输入传感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，在输入换能器和输出换能器之间限定正向通路，反馈消除系统，用于估计从输出变换器到输入换能器的声反馈的影响，反馈消除系统包括可变预估滤波器和存储器，其中多个预定反馈信道脉冲响应对应于多个声环境，经历的实质性反馈被存储，并且其中听力仪器包括基于当前声学环境的监测单元，适于在存储的脉冲响应中选择当前最合适的可变预估滤波器的脉冲响应。这具有提供用于处理可以相对快速地适应变化的声学环境适应的声反馈的方案的优点。本发明可以例如用于听力装置，例如助听器，头戴式耳塞或有源耳塞，其中定制的反馈补偿是一个问题。

10. 发明授权

US08422708B2 Adaptive long-term prediction filter for adaptive whitening 有权
标题翻译：用于自适应白化的自适应长期预测滤波器
公开(公告)号：US08422708B2
公开(公告)日：2013-04-16
申请号：US12506983
申请日：2009-07-21
申请人： Thomas Bo Elmedyb , Jesper Jensen
发明人： Thomas Bo Elmedyb , Jesper Jensen
IPC分类号： H04R25/00 , H04B15/00
CPC分类号： H04R25/453 , H04R5/033
摘要： A method of estimating acoustic feedback in a hearing instrument in order to reduce the impact of tonal components of acoustic feedback. The hearing instrument comprises an input transducer, an output transducer, a forward path being defined between the input transducer and the output transducer, a signal processing unit defining an input side and an output side of the forward path, and a feedback loop from the output side to the input side. The feedback loop comprises a feedback path estimation unit receiving first and second estimation input signals from the input and output side of the forward path, respectively, wherein the first and second estimation input signal paths comprise first and second long term prediction filters P(z), the feedback cancellation system being adapted to provide that the variable parameters of at least one of the long term prediction filters are estimated based on the filter input signal.
摘要翻译：一种在听力仪器中估计声反馈以减少声反馈的音调分量的影响的方法。听力仪器包括输入换能器，输出换能器，在输入换能器和输出换能器之间定义的前进路径，定义前进路径的输入侧和输出侧的信号处理单元，以及来自输出的反馈回路侧到输入端。反馈回路包括反馈路径估计单元，分别从前向通路的输入和输出侧接收第一和第二估计输入信号，其中第一和第二估计输入信号路径包括第一和第二长期预测滤波器P（z）反馈消除系统适于提供基于滤波器输入信号来估计长期预测滤波器中的至少一个的可变参数。

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