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1. 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.

2. 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.

3. 发明公开

EP2847759A2 NOISE BURST ADAPTATION OF SECONDARY PATH ADAPTIVE RESPONSE IN NOISE-CANCELING PERSONAL AUDIO DEVICES 有权
标题翻译：调整次级路径适应性反应在有噪声的噪声抵消BUNCH个人音频设备
公开(公告)号：EP2847759A2
公开(公告)日：2015-03-18
申请号：EP13721151.2
申请日：2013-04-15
申请人： Cirrus Logic, Inc.
发明人： HENDRIX, Jon, D. , ALDERSON, Jeffrey , MILLER, Antonio, John , LU, Yang
IPC分类号： G10K11/178
CPC分类号： G10K11/002 , G10K11/178 , G10K11/17817 , G10K2210/108 , G10K2210/3049
摘要： A personal audio device, such as a wireless telephone, generates an anti-noise signal from an error microphone signal and injects the anti-noise signal into the speaker or other transducer output to cause cancellation of ambient audio sounds. The error microphone is also provided proximate the speaker to provide an error signal indicative of the effectiveness of the noise cancellation. A secondary path estimating adaptive filter is used to estimate the electro-acoustical path from the noise canceling circuit through the transducer so that source audio can be removed from the error signal. Noise bursts are injected intermittently and the adaptation of the secondary path estimating adaptive filter controlled, so that the secondary path estimate can be maintained irrespective of the presence and amplitude of the source audio.

4. 发明授权

EP1003154B1 Acoustic system identification using acoustic masking 有权
标题翻译：通过声学掩蔽的装置的声学装置的识别
公开(公告)号：EP1003154B1
公开(公告)日：2006-05-31
申请号：EP99302391.0
申请日：1999-03-29
申请人： Tenneco Automotive Inc.
发明人： Eatwell, Graham P.
IPC分类号： G10K11/178
CPC分类号： G10K11/17817 , G10K11/17881 , G10K2210/3018 , G10K2210/30232 , G10K2210/30351 , G10K2210/3049 , G10K2210/3053
摘要： A system for identifying a model of an acoustic system (10) in the presence of an external noise signal (11) is disclosed. The system includes an acoustic actuator (12) for generating controlled sound within the acoustic system (10). A sensor (16) receives the controlled sound and the external noise signal (11) and produces a sensed signal (18). A control system (22) generates a control signal (30) in response to an error signal (20). The control system (22) includes a system model (32) for generating an estimated response signal (34). The control system (22, 32) also generates the error signal (20) representing the difference between the sensed signal (18) and the estimated response signal (34). A masking threshold generator (50) receives the sensed signal (18) and the error signal (20) and produces spectral shaping parameters (52). A shaped signal generator (44) for receives the spectral shaping parameters (52) and produces a test signal (46) which is provided as an input to the control system (22, 32). A signal combining device (28) receives the test signal (46) and the control signal (30) and produces an actuator drive signal (14) for driving the acoustic actuator (12).

5. 发明公开

EP1003154A3 Acoustic system identification using acoustic masking 有权
标题翻译：通过声学掩蔽的装置的声学装置的识别
公开(公告)号：EP1003154A3
公开(公告)日：2002-08-07
申请号：EP99302391.0
申请日：1999-03-29
申请人： Tenneco Automotive Inc.
发明人： Eatwell, Graham P.
IPC分类号： G10K11/178
CPC分类号： G10K11/17817 , G10K11/17881 , G10K2210/3018 , G10K2210/30232 , G10K2210/30351 , G10K2210/3049 , G10K2210/3053
摘要： A system for identifying a model of an acoustic system (10) in the presence of an external noise signal (11) is disclosed. The system includes an acoustic actuator (12) for generating controlled sound within the acoustic system (10). A sensor (16) receives the controlled sound and the external noise signal (11) and produces a sensed signal (18). A control system (22) generates a control signal (30) in response to an error signal (20). The control system (22) includes a system model (32) for generating an estimated response signal (34). The control system (22, 32) also generates the error signal (20) representing the difference between the sensed signal (18) and the estimated response signal (34). A masking threshold generator (50) receives the sensed signal (18) and the error signal (20) and produces spectral shaping parameters (52). A shaped signal generator (44) for receives the spectral shaping parameters (52) and produces a test signal (46) which is provided as an input to the control system (22, 32). A signal combining device (28) receives the test signal (46) and the control signal (30) and produces an actuator drive signal (14) for driving the acoustic actuator (12).

6. 发明公开

EP4369736A1 ACTIVE NOISE CANCELLING METHOD AND ACTIVE NOISE CANCELLING EARPIECE 审中-实审
公开(公告)号：EP4369736A1
公开(公告)日：2024-05-15
申请号：EP22857006.5
申请日：2022-12-28
申请人： Shenzhen Goodix Technology Co., Ltd.
发明人： LI, Guoliang , WANG, Lelin
IPC分类号： H04R1/10
CPC分类号： H04R1/1083 , H04R1/1016 , H04R2460/0120130101 , G10K11/17817 , G10K11/17827 , G10K11/17885 , G10K2210/108120130101 , G10K2210/50620130101 , G10K11/17854 , G10K11/17881 , G10K11/17823
摘要： An active noise cancellation method and active noise cancellation earphones are provided, which may improve a noise cancellation effect of the active noise cancellation earphones. The active noise cancellation earphones include an in-ear microphone, an out-of-ear microphone, a speaker and a filter, and the method includes: determining a first primary path transfer function according to a first out-of-ear data collected by the out-of-ear microphone and a first in-ear data collected by the in-ear microphone when the speaker plays audio data; determining audio data received by the in-ear microphone according to the first in-ear data, the first out-of-ear data and the first primary path transfer function; determining a first secondary path transfer function according to the audio data played through the speaker and the audio data received by the in-ear microphone; and updating an operation coefficient of the filter to a first operation coefficient according to the first primary path transfer function and/or the first secondary path transfer function.

7. 发明公开

EP4364132A1 APPARATUS, SYSTEM, AND METHOD OF ACTIVE ACOUSTIC CONTROL (AAC) 审中-实审
公开(公告)号：EP4364132A1
公开(公告)日：2024-05-08
申请号：EP22832307.7
申请日：2022-06-28
申请人： Silentium Ltd.
发明人： FRIDMAN, Tzvi , ELBAZ, Mordehay , FLEISCHER, Alon , SHEINFELD, Iddo , YEMINI, Ariel
IPC分类号： G10K11/178
CPC分类号： G10K11/17881 , G10K11/17817 , G10K11/17835 , G10K2210/1282120130101 , G10K2210/50520130101 , G10K2210/50320130101 , G10K2210/304720130101 , G10K2210/301920130101

8. 发明授权

EP3799032B1 AUDIO SYSTEM AND SIGNAL PROCESSING METHOD FOR AN EAR MOUNTABLE PLAYBACK DEVICE 有权转让
公开(公告)号：EP3799032B1
公开(公告)日：2024-05-01
申请号：EP19200528.8
申请日：2019-09-30
IPC分类号： G10K11/178 , H04R1/10
CPC分类号： G10K11/17817 , G10K11/17881 , G10K11/17885 , G10K11/17827 , G10K11/17854 , G10K2210/302620130101 , G10K2210/302720130101 , G10K2210/108120130101 , H04R1/1083

9. 发明公开

EP3001416A1 NOISE CONTROLLER AND NOISE CONTROL METHOD FOR REDUCING NOISE 审中-公开
标题翻译： RAUSCHUNTERDRÜCKUNGUND RAUSCHKONTROLLVERFAHREN ZUR RAUSCHREDUZIERUNG
公开(公告)号：EP3001416A1
公开(公告)日：2016-03-30
申请号：EP15183576.6
申请日：2015-09-02
申请人： Panasonic Intellectual Property Management Co., Ltd.
发明人： KANO, Hiroyuki
IPC分类号： G10L21/0208 , G10K11/178
CPC分类号： G10K11/178 , G10K11/17817 , G10K11/17881 , G10K2210/1282 , G10K2210/3018 , G10K2210/3026 , G10K2210/3046 , G10K2210/3055 , G10L21/0208
摘要： A noise controller includes a first control unit that outputs a control signal for outputting sound for reducing noise to a first speaker, a first characteristic circuit that generates a signal by performing convolution, using a transfer characteristic from the second speaker to a second sound collector, on a control signal output from the first control unit to a second speaker, a subtractor that subtracts the signal generated by the first characteristic circuit from an output signal of a second sound collector and outputs a resultant signal. The first control unit generates the control signal to be output to the first speaker while the output signal from the subtractor serves as a reference signal so that an output signal of the first sound collector is minimized, and outputs the control signal to the first speaker.
摘要翻译：噪声控制器包括：第一控制单元，其将用于输出用于降低噪声的声音的控制信号输出到第一扬声器;第一特性电路，其使用从第二扬声器到第二声音收集器的传递特性，通过执行卷积来生成信号; 在从第一控制单元输出到第二扬声器的控制信号上，减法器，从第二声音收集器的输出信号中减去由第一特征电路产生的信号，并输出结果信号。第一控制单元产生要输出到第一扬声器的控制信号，而来自减法器的输出信号用作参考信号，使得第一收音器的输出信号最小化，并将控制信号输出到第一扬声器。

10. 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。

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