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1. 发明公开

EP1872360A1 VERFAHREN ZUR NACHBILDUNG EINES SECONDARY-PATH BEI EINEM AKTIVEN GERÄUSCHREDUKTIONSSYSTEM 审中-公开
标题翻译：用于再现的次要通道的方法在主动降噪系统
公开(公告)号：EP1872360A1
公开(公告)日：2008-01-02
申请号：EP06721921.2
申请日：2006-04-21
申请人： Anocsys AG
发明人： BACHMANN, Harry
IPC分类号： G10K11/178
CPC分类号： G10K11/178 , G10K2210/3012 , G10K2210/3017 , G10K2210/3022 , G10K2210/30232 , G10K2210/3025
摘要： The invention relates to a method for reproducing a secondary path in an active noise reduction system comprising a transmission path (S, 9', 10, 11), an adaptively adjustable filter (13), and an addition unit (14), the adaptively adjustable filter (13) being adjusted according to an output signal of the addition unit (14). The inventive method includes the following step: a delay time (T) of a signal along the transmission path (8, 9, 10, 11) is eliminated in the transmission function of the adaptively adjustable filter (13) in order to generate the reproduction of the secondary path.

2. 发明公开

EP2216774A1 Adaptive noise control system 有权
标题翻译： AdaptorsGeräuschdämpfungssystemund entsprechendes Verfahren
公开(公告)号：EP2216774A1
公开(公告)日：2010-08-11
申请号：EP09151815.9
申请日：2009-01-30
申请人： Harman Becker Automotive Systems GmbH
发明人： Wurm, Michael , Christoph, Markus
IPC分类号： G10K11/178
CPC分类号： G10K11/17817 , G10K2210/1282 , G10K2210/3022
摘要： An active noise cancellation system is disclosed for reducing, at a listening position, the power of a noise signal being radiated from a noise source to the listening position. The system comprises: an adaptive filter receiving a reference signal representing the noise signal and comprising an output providing a compensation signal; a signal source providing a measurement signal; at least one acoustic actuator radiating the compensation signal and the measurement signal to the listening position; at least one microphone receiving a superposition of the radiated compensation signal, the measurement signal, and the noise signal at the listening position and providing an error signal; a secondary path comprising a secondary path system which represents the signal transmission path from an output of the adaptive filter to an output of the microphone; and an estimation unit for estimating a transfer characteristic of a secondary path system responsive to the measurement signal and the error signal.
摘要翻译：公开了一种主动噪声消除系统，用于在收听位置减小从噪声源辐射到收听位置的噪声信号的功率。该系统包括：自适应滤波器，接收表示噪声信号的参考信号，并包括提供补偿信号的输出; 提供测量信号的信号源; 至少一个声学致动器将补偿信号和测量信号辐射到收听位置; 至少一个麦克风在收听位置处接收辐射补偿信号，测量信号和噪声信号的叠加并提供误差信号; 次级路径，其包括次级路径系统，其表示从自适应滤波器的输出到麦克风的输出的信号传输路径; 以及估计单元，用于响应于测量信号和误差信号估计二次路径系统的传输特性。

3. 发明公开

EP2987161A1 SYSTEMS AND METHODS FOR ADAPTIVE NOISE CANCELLATION INCLUDING SECONDARY PATH ESTIMATE MONITORING 有权
标题翻译：系统和用于按次级路径估计监测自适应降噪方法
公开(公告)号：EP2987161A1
公开(公告)日：2016-02-24
申请号：EP14711048.0
申请日：2014-02-24
申请人： Cirrus Logic, Inc.
发明人： ZHOU, Dayong , LU, Yang , LI, Ning
IPC分类号： G10K11/178
CPC分类号： H04R3/002 , G10K11/16 , G10K11/178 , G10K11/17817 , G10K11/17833 , G10K2210/108 , G10K2210/1081 , G10K2210/3017 , G10K2210/3022 , G10K2210/3026 , G10K2210/3027 , G10K2210/3035 , G10K2210/3039 , G10K2210/3055 , G10K2210/3056 , G10K2210/503 , G10K2210/509
摘要： In accordance with methods and systems of the present disclosure, a processing circuit may implement a feedback filter having a response that generates a feedback anti-noise signal component from a playback corrected error, the playback corrected error based on a difference between an error microphone signal and a secondary path estimate, and wherein the anti-noise signal comprises at least the feedback anti-noise signal component, a secondary path estimate filter configured to model an electro-acoustic path of the source audio signal and have a response that generates a secondary path estimate from the source audio signal, and a secondary coefficient control block that shapes the response of the secondary path estimate adaptive filter in conformity with a source audio signal and the playback corrected error by adapting the response of the secondary path estimate adaptive filter to minimize the playback corrected error.

4. 发明公开

EP3156999A1 ENGINE NOISE CONTROL 有权
标题翻译：发动机噪音控制
公开(公告)号：EP3156999A1
公开(公告)日：2017-04-19
申请号：EP15190171.7
申请日：2015-10-16
申请人： Harman Becker Automotive Systems GmbH
发明人： Christoph, Markus , Zafeiropoulos, Nikos
IPC分类号： G10K11/178
CPC分类号： G10K11/178 , G10K11/17879 , G10K11/17883 , G10K2210/121 , G10K2210/1282 , G10K2210/12822 , G10K2210/129 , G10K2210/3011 , G10K2210/3022 , G10K2210/3028 , G10K2210/3045 , G10K2210/501 , G10K2210/512
摘要： An exemplary engine noise control includes directly picking up engine noise from an engine of a vehicle at a pick-up position to generate a sense signal representative of the engine noise, and active noise control filtering to generate a filtered sense signal from the sense signal. The control further includes converting the filtered sense signal from the active noise control filtering into anti-noise and radiating the anti-noise to a listening position in an interior of the vehicle. The filtered sense signal is configured so that the anti-noise reduces the engine noise at the listening position.
摘要翻译：示例性发动机噪声控制包括在拾取位置直接拾取来自车辆发动机的发动机噪声以产生表示发动机噪声的感测信号，以及有源噪声控制滤波以从感测信号生成经滤波的感测信号。控制还包括将来自有源噪声控制滤波的经滤波的感测信号转换成抗噪声并且将抗噪声辐射到车辆内部的收听位置。滤波后的感测信号被配置为使得抗噪声降低了在收听位置处的发动机噪音。

5. 发明公开

EP2987162A1 SYSTEMS AND METHODS FOR HYBRID ADAPTIVE NOISE CANCELLATION 有权
标题翻译：用于混合自适应噪声消除的系统和方法
公开(公告)号：EP2987162A1
公开(公告)日：2016-02-24
申请号：EP14711079.5
申请日：2014-02-28
申请人： Cirrus Logic, Inc.
发明人： HELLMAN, Ryan A.
IPC分类号： G10K11/178
CPC分类号： G10K11/16 , G10K11/178 , G10K11/17817 , G10K11/1785 , G10K11/17885 , G10K2210/1081 , G10K2210/3017 , G10K2210/3022 , G10K2210/3026 , G10K2210/3027
摘要： In accordance with systems and methods of this disclosure, a method may include generating a feedforward anti-noise signal component from a result of measuring with the reference microphone countering the effects of ambient audio sounds at an acoustic output of a transducer by filtering an output of the reference microphone, adaptively generating a feedback anti-noise signal component from a result of measuring with an error microphone for countering the effects of ambient audio sounds at the acoustic output of the transducer by adapting a response of a feedback adaptive filter that filters a synthesized reference feedback to minimize the ambient audio sounds in the error microphone signal, wherein the synthesized reference feedback is based on a difference between the error microphone signal and the feedback anti-noise signal component.
摘要翻译：根据本公开的系统和方法，一种方法可以包括：从参考麦克风的测量结果生成前馈抗噪声信号分量，该参数麦克风通过滤波输出来抵消换能器的声输出处的环境音频声音的效果所述参考麦克风根据利用误差麦克风进行测量的结果来自适应地生成反馈抗噪声信号分量，用于通过调整对所述换能器的声学输出进行滤波的反馈自适应滤波器的响应来对抗所述换能器的声学输出处的环境音频声音的影响参考反馈以最小化所述误差麦克风信号中的环境音频声音，其中所述合成参考反馈基于所述误差麦克风信号与所述反馈抗噪声信号分量之间的差异。

6. 发明公开

EP2987160A1 SYSTEMS AND METHODS FOR HYBRID ADAPTIVE NOISE CANCELLATION 有权
标题翻译：系统和方法混合自适应降噪
公开(公告)号：EP2987160A1
公开(公告)日：2016-02-24
申请号：EP14710420.2
申请日：2014-02-20
申请人： Cirrus Logic, Inc.
发明人： ALDERSON, Jeffrey D.
IPC分类号： G10K11/178
CPC分类号： H04R3/002 , G10K11/16 , G10K11/178 , G10K11/17817 , G10K11/17833 , G10K2210/108 , G10K2210/1081 , G10K2210/3017 , G10K2210/3022 , G10K2210/3026 , G10K2210/3027 , G10K2210/3035 , G10K2210/3039 , G10K2210/3055 , G10K2210/3056 , G10K2210/503 , G10K2210/509
摘要： In accordance with methods and systems of the present disclosure, a processing circuit may implement a feedback filter having a response that generates a feedback anti-noise signal component from a playback corrected error, the playback corrected error based on a difference between an error microphone signal and a secondary path estimate, and wherein the anti-noise signal comprises at least the feedback anti-noise signal component, a secondary path estimate filter configured to model an electro-acoustic path of the source audio signal and have a response that generates a secondary path estimate from the source audio signal, and a secondary coefficient control block that shapes the response of the secondary path estimate adaptive filter in conformity with a source audio signal and the playback corrected error by adapting the response of the secondary path estimate adaptive filter to minimize the playback corrected error.

7. 发明授权

EP2216774B1 Adaptive noise control system and method 有权
标题翻译：自适应噪声衰减系统和相应的方法
公开(公告)号：EP2216774B1
公开(公告)日：2015-09-16
申请号：EP09151815.9
申请日：2009-01-30
申请人： Harman Becker Automotive Systems GmbH
发明人： Wurm, Michael , Christoph, Markus
IPC分类号： G10K11/178
CPC分类号： G10K11/17817 , G10K2210/1282 , G10K2210/3022
摘要： An active noise cancellation system is disclosed for reducing, at a listening position, the power of a noise signal being radiated from a noise source to the listening position. The system comprises: an adaptive filter receiving a reference signal representing the noise signal and comprising an output providing a compensation signal; a signal source providing a measurement signal; at least one acoustic actuator radiating the compensation signal and the measurement signal to the listening position; at least one microphone receiving a superposition of the radiated compensation signal, the measurement signal, and the noise signal at the listening position and providing an error signal; a secondary path comprising a secondary path system which represents the signal transmission path from an output of the adaptive filter to an output of the microphone; and an estimation unit for estimating a transfer characteristic of a secondary path system responsive to the measurement signal and the error signal.

8. 发明公开

EP3338278A1 HYBRID ADAPTIVE NOISE CANCELLATION SYSTEM WITH FILTERED ERROR MICROPHONE SIGNAL 审中-公开
公开(公告)号：EP3338278A1
公开(公告)日：2018-06-27
申请号：EP16757501.8
申请日：2016-08-19
申请人： Cirrus Logic International Semiconductors, Ltd.
发明人： ZHOU, Dayong , LU, Yang , LI, Ning , KWATRA, Nitin , MILLER, Antonio J.
IPC分类号： G10K11/178 , H04R1/10
CPC分类号： G10K11/178 , G10K11/16 , G10K11/17817 , G10K11/17879 , G10K11/17885 , G10K2210/108 , G10K2210/1081 , G10K2210/1082 , G10K2210/3017 , G10K2210/3022 , G10K2210/3026 , G10K2210/3027 , G10K2210/3035 , G10K2210/3039 , G10K2210/3045 , G10K2210/3049 , G10K2210/3053 , G10K2210/3055 , G10K2210/3056 , G10K2210/509 , H04R1/1083 , H04R3/002 , H04R3/005 , H04R2410/05 , H04R2460/01 , H04R2499/11
摘要： In accordance with systems and methods of the present disclosure, an adaptive noise cancellation system may include an alignment filter configured to correct misalignment of a reference microphone signal and an error microphone signal by generating a misalignment correction signal.

9. 发明公开

EP3170173A1 ACTIVE NOISE CANCELLATION DEVICE 失效
标题翻译：有源噪声消除设备
公开(公告)号：EP3170173A1
公开(公告)日：2017-05-24
申请号：EP15804985.8
申请日：2015-05-08
申请人： Huawei Technologies Co. Ltd.
发明人： DZHIGAN, Victor Ivanovich , PETROVSKY, Alexey Alexandrovich , QIN, Jingfan , SONG, Yang
IPC分类号： G10K11/178 , H04R1/10
CPC分类号： G10K11/178 , G10K11/17854 , G10K11/17881 , G10K2210/1081 , G10K2210/3022 , G10K2210/30231 , G10K2210/3026 , G10K2210/3027 , G10K2210/3028 , G10K2210/3045 , G10K2210/3047 , H04R1/1083
摘要： An active noise cancellation device for cancelling a primary acoustic path between a noise source and a microphone by an overlying secondary acoustic path between a canceling loudspeaker and the microphone, the device comprising: a first input for receiving a microphone signal from the microphone; wherein the first electrical compensation path and the second electrical compensation path are coupled in parallel between a first node and the first input to provide the first noise canceling signal for a feed-backward prediction of the noise source; wherein the third electrical compensation path and the fourth electrical compensation path are coupled in parallel between a second node and the first input to provide the second noise canceling signal for a feed-forward prediction of noise source.
摘要翻译：一种主动噪声消除设备，用于通过取消扬声器与麦克风之间的重叠次级声学路径来消除噪声源与麦克风之间的主要声学路径，所述设备包括：第一输入，用于接收来自麦克风的麦克风信号; 其中所述第一电补偿路径和所述第二电补偿路径并联耦合在第一节点和所述第一输入之间以提供用于所述噪声源的反馈预测的所述第一噪声消除信号; 其中所述第三电补偿路径和所述第四电补偿路径并联耦合在第二节点和所述第一输入之间以提供用于噪声源的前馈预测的所述第二噪声消除信号。

10. 发明公开

EP2987163A1 SYSTEMS AND METHODS FOR ADAPTIVE NOISE CANCELLATION BY BIASING ANTI-NOISE LEVEL 有权
标题翻译：系统和自适应降噪方法通过斜裁的防噪声电平
公开(公告)号：EP2987163A1
公开(公告)日：2016-02-24
申请号：EP14711085.2
申请日：2014-02-28
申请人： Cirrus Logic, Inc.
发明人： YONG, Chin Huang , ALDERSON, Jeffrey D.
IPC分类号： G10K11/178
CPC分类号： G10K11/16 , G10K11/178 , G10K11/17817 , G10K11/17833 , G10K11/17881 , G10K11/17885 , G10K2210/1081 , G10K2210/3014 , G10K2210/3017 , G10K2210/3022 , G10K2210/3027 , G10K2210/30351
摘要： A processing circuit may comprise an adaptive filter having a response generating an anti-noise signal from a reference microphone signal, a secondary path estimate filter modeling an electro-acoustic path of a source audio signal, a biasing portion that generates a scaled anti-noise signal by applying a scaling factor and the response of the secondary path estimate filter to the anti-noise signal, and a coefficient control block that shapes the response of the adaptive filter in conformity with the reference microphone signal and a modified playback corrected error signal by adapting the response of the adaptive filter to minimize ambient audio sounds in the error microphone signal, wherein the playback corrected error is based on a difference between the error microphone signal and the source audio signal and the modified playback corrected error signal is based on a difference between the playback corrected error signal and the scaled anti-noise signal.

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