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1. 发明申请

WO2014108611A1 PROCÉDÉ DE CONTRÔLE ACTIF ACOUSTIQUE DE BRUIT PERTURBATEUR À BANDES(S) ÉTROITE(S) À MICROPHONE(S) MOBILE(S), SYSTÈME CORRESPONDANT 审中-公开
标题翻译：具有一个或多个移动麦克风的窄带干扰噪声的主动声控制方法及相应系统
公开(公告)号：WO2014108611A1
公开(公告)日：2014-07-17
申请号：PCT/FR2013/053055
申请日：2013-12-12
申请人： IXBLUE
发明人： VAU, Bernard
IPC分类号： G10K11/178
CPC分类号： G10K11/178 , G10K2210/1081 , G10K2210/12 , G10K2210/121 , G10K2210/3035 , G10K2210/3048 , G10K2210/3049 , G10K2210/511
摘要： L'invention concerne un procédé de contrôle actif acoustique de bruit perturbateur à bande(s) étroite(s) à microphone(s) mobile(s) destiné à atténuer, voire supprimer, en temps réel ledit bruit perturbateur dans une zone contrôlée (9) d'un espace de travail (1) par génération d'au moins un contre-bruit par un moyen de génération sonore (3) commandé par un signal de commande U(t) produit en sortie d'un moyen de calcul recevant en entrée au moins un signal de mesure Y(t) provenant d'un capteur acoustique (6), ledit moyen de calcul mettant en oeuvre un correcteur (11) obtenu à partir d'un modèle acoustique obtenus suite à une première étape préalable d'identification et une deuxième étape préalable de synthèse du correcteur (11), au moins le correcteur étant mémorisé dans le moyen de calcul pour utilisation en temps réel dans une troisième étape d'atténuation ou suppression en temps réel dudit bruit perturbateur. Selon l'invention, la zone à contrôler (9) et ledit au moins un capteur acoustique (6) peuven être amenés à se déplacer au cours du temps dans l'espace de travail (1) et on détermine préalablement des points d'identifications (8) (... Pj...) dans ledit espace de travail (1), dans la première étape on identifie pour chaque point d'identification (8) le modèle acoustique, dans la seconde étape on synthétise pour chaque modèle le correcteur (11) correspondant, et dans la troisième étape, en temps réel, on met en oeuvre des moyens de sélection (12) d'au moins un des correcteur (11) stockés pour la production du signal de commande U(t) afin d'au moins atténuer ledit bruit perturbateur.
摘要翻译：本发明涉及一种用于利用一个或多个移动麦克风对窄带干扰噪声进行主动声控制的方法，其用于实时衰减或甚至抑制工作的受控区域（9）中的干扰噪声空间（1），通过由计算装置的输出产生的控制信号U（t）控制的声音产生装置（3）产生至少一个反噪声，该计算装置作为输入接收至少一个测量信号Y（t ）来自声学传感器（6）。计算装置使用基于在第一先前识别步骤和第二在前校正器（11）合成步骤之后产生的声学模型获得的校正器（11），至少校正器存储在计算装置中用于实际实时衰减或抑制干扰噪声的第三步。根据本发明，要被控制的区域（9）和至少一个声学传感器（6）可以在工作空间（1）内随时间移动。此外，在工作空间（1）中预先确定识别点（8）（... Pj ...）。在第一步中，为每个识别点（8）识别声学模型。在第二步中，针对每个模型合成对应的校正器（11）。在第三步骤中，选择装置（12）被实时采用以至少选择用于产生控制信号U（t）的所存储的校正器（11）中的至少一个，以便至少衰减所述干扰噪声。

2. 发明申请

WO2012166388A2 BANDLIMITING ANTI-NOISE IN PERSONAL AUDIO DEVICES HAVING ADAPTIVE NOISE CANCELLATION (ANC) 审中-公开
标题翻译：在具有自适应噪声消除（ANC）的个人音频设备中绑定防噪声
公开(公告)号：WO2012166388A2
公开(公告)日：2012-12-06
申请号：PCT/US2012038512
申请日：2012-05-18
申请人： CIRRUS LOGIC INC
发明人： ALDERSON JEFFREY , KWATRA NITIN , KAMATH GAUTHAM DEVENDRA , ABDOLLAHZADEH MILANI ALI , MELANSON JOHN L
IPC分类号： G10K11/16
CPC分类号： G10K11/178 , G10K11/1784 , G10K2210/108 , G10K2210/1081 , G10K2210/1082 , G10K2210/3017 , G10K2210/3028 , G10K2210/3035 , G10K2210/3049 , G10K2210/3056 , G10K2210/511
摘要： A personal audio device, such as a wireless telephone, includes noise canceling circuit that adaptively generates an anti-noise signal from a reference microphone signal and injects the anti-noise signal into the speaker or other transducer output to cause cancellation of ambient audio sounds. An error microphone may also be provided proximate the speaker to measure the output of the transducer in order to control the adaptation of the anti-noise signal and to estimate an electro-acoustical path from the noise canceling circuit through the transducer. A processing circuit that performs the adaptive noise canceling (ANC) function also either adjusts the frequency response of the anti-noise signal with respect to the reference microphone signal, and/or by adjusting the response of the adaptive filter independent of the adaptation provided by the reference microphone signal.
摘要翻译：诸如无线电话的个人音频设备包括噪声消除电路，其自适应地从参考麦克风信号产生抗噪声信号，并将抗噪声信号注入到扬声器或其他换能器输出中以引起环境音频声音的消除。还可以在扬声器附近提供误差麦克风以测量换能器的输出，以便控制抗噪声信号的适配并且估计通过换能器的噪声消除电路的电声路径。执行自适应噪声消除（ANC）功能的处理电路还可以相对于参考麦克风信号来调整抗噪声信号的频率响应，和/或通过调整自适应滤波器的响应，独立于由参考麦克风信号。

3. 发明申请

WO2002069317A2 NETWORKED SOUND MASKING AND PAGING SYSTEM 审中-公开
标题翻译：网络声音和寻呼系统
公开(公告)号：WO2002069317A2
公开(公告)日：2002-09-06
申请号：PCT/CA2002/000238
申请日：2002-02-26
申请人： 777388 ONTARIO LIMITED , MOELLER, Klaus, R. , MOELLER, Niklas , RUSU, Mircea , DERLA, Carl
发明人： MOELLER, Klaus, R. , MOELLER, Niklas , RUSU, Mircea , DERLA, Carl
IPC分类号： G10K11/00
CPC分类号： G10K11/175 , G10K2210/3014 , G10K2210/30351 , G10K2210/3049 , H04K3/42 , H04K3/43 , H04K3/45 , H04K3/825 , H04K2203/12 , H04K2203/34 , H04M11/027 , H04R3/002 , H04R27/00 , H05K5/0247
摘要： A sound masking system for shaping the ambient noise level in a physical environment. The sound masking system comprises a networked and distributed system having a number of master units coupled together and to a control unit. One or more of the master units may include satellite sound masking units which function to reproduce the sound masking signal generated by the master sound masking unit. Each of the master units is addressable over the network by the control unit enabling the control unit to program the contour, spectral band, and gain characteristics of the sound masking output signal. The system may also include a remote control unit which provides the capability to tune and adjust each master sound masking unit in situ without requiring physical access through the ceiling installation. According to another aspect, there is a networked paging system with individually addressable speaker units for announcing a paging signal selected from a number of paging signals.
摘要翻译：用于在物理环境中整形环境噪声水平的声音遮蔽系统。声音掩蔽系统包括具有耦合在一起的多个主单元和控制单元的网络和分布式系统。一个或多个主单元可以包括用于再现由主声音掩蔽单元产生的声音屏蔽信号的卫星声音屏蔽单元。每个主单元可由控制单元通过网络寻址，使得控制单元能够编程声屏蔽输出信号的轮廓，频谱带和增益特性。该系统还可以包括遥控单元，该遥控单元提供能够在原地调整和调整每个主声音屏蔽单元的能力，而不需要通过天花板安装进行物理访问。根据另一方面，存在具有单独可寻址的扬声器单元的联网寻呼系统，用于通知从多个寻呼信号中选择的寻呼信号。

4. 发明申请

WO1996014634A1 REDUCTION OF COMPUTATIONAL BURDEN OF ADAPTIVELY UPDATING CONTROL FILTER(S) IN ACTIVE SYSTEMS 审中-公开
标题翻译：减少主动系统中适应性更新控制过滤器的计算机BURDEN
公开(公告)号：WO1996014634A1
公开(公告)日：1996-05-17
申请号：PCT/US1995013453
申请日：1995-10-19
申请人： LORD CORPORATION
发明人： LORD CORPORATION , SOUTHWARD, Steve, C. , MILLER, Lane, R.
IPC分类号： G10K11/178
CPC分类号： H03H21/0012 , G10K11/178 , G10K2210/3011 , G10K2210/3017 , G10K2210/3026 , G10K2210/3027 , G10K2210/3031 , G10K2210/3032 , G10K2210/3042 , G10K2210/3049 , G10K2210/3053 , G10K2210/3054
摘要： An active control method and apparatus for controlling vibration or sound wherein the computational burden to adaptively update the control filter within the update model is reduced. The apparatus includes means (not represented) for producing an input signal (36) for input to the update model (22) and the reduction block (26), means (not represented) for generating an error signal (41), and an output device (25) for canceling sound and/or vibration at a selected location. The method uses a gradient descent algorithm such as the filtered-x LMS algorithm and replaces the long filter model (23, 24) with a shortened length filter model (28, 30, 30'). Error signal information together with the output information from the shortened length filter model are used to update the coefficients of the control filter (32) according to an update calculation method. The shortened filter model only contains frequency response information at the L frequencies of interest. Because of the reduced amount of information contained in the shortened filter model, more updates per unit of time can be performed on the control filter(s) or a smaller or fewer processors or CPU's may be utilized. The method has applicability to feed-forward and feed-back type systems and also to systems using a waveform generator for supplying the input signal. The reduction method may be implemented on-line or off-line.
摘要翻译：一种用于控制振动或声音的主动控制方法和装置，其中减少了在更新模型内自适应地更新控制滤波器的计算负担。该装置包括用于产生用于输入到更新模型（22）和减少块（26）的输入信号（36）的装置（未示出），用于产生误差信号（41）的装置（未表示）和输出用于在选定位置消除声音和/或振动的装置（25）。该方法使用梯度下降算法，如过滤x LMS算法，并用缩短的长度过滤器模型（28,30,30'）替换长过滤器模型（23,24）。误差信号信息与来自缩短的长度滤波器模型的输出信息一起用于根据更新计算方法来更新控制滤波器（32）的系数。缩短的滤波器模型仅包含感兴趣的L个频率的频率响应信息。由于缩短的过滤器模型中包含的信息量减少，因此可以在控制过滤器上执行每单位时间更多的更新，或者可以使用更小或更少的处理器或CPU。该方法适用于前馈和反馈型系统，并且还适用于使用波形发生器提供输入信号的系统。还原方法可以在线或离线实现。

5. 发明申请

WO2013169436A2 NOISE BURST ADAPTATION OF SECONDARY PATH ADAPTIVE RESPONSE IN NOISE-CANCELING PERSONAL AUDIO DEVICES 审中-公开
标题翻译：噪音消除个人音乐设备中二次路自适应响应的噪声调整
公开(公告)号：WO2013169436A2
公开(公告)日：2013-11-14
申请号：PCT/US2013/036531
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.
摘要翻译：诸如无线电话的个人音频设备从误差麦克风信号产生抗噪声信号，并将抗噪声信号注入到扬声器或其它换能器输出中以引起环境声音的消除。误差麦克风也靠近扬声器提供，以提供指示噪声消除的有效性的误差信号。二次路径估计自适应滤波器用于估计通过换能器的噪声消除电路的电声路径，从而可以从误差信号中去除源音频。噪声突发被间歇地注入，并且二次路径估计自适应滤波器的适配被控制，使得可以维持辅助路径估计，而不管源音频的存在和幅度如何。

6. 发明申请

WO1994029848A1 ERROR PATH TRANSFER FUNCTION MODELLING IN ACTIVE NOISE CANCELLATION 审中-公开
标题翻译：主动噪声消除中的错误路径传递函数建模
公开(公告)号：WO1994029848A1
公开(公告)日：1994-12-22
申请号：PCT/US1994005153
申请日：1994-05-11
申请人： CATERPILLAR INC.
发明人： CATERPILLAR INC. , KUO, Sen, M. , CHRISTENSEN, Mary, K.
IPC分类号： G10K11/16
CPC分类号： G10K11/178 , G10K2210/3011 , G10K2210/30232 , G10K2210/3041 , G10K2210/3049
摘要： A signal containing the full range of frequencies to be cancelled is employed in establishing an initial estimate of the error path loss in an active noise cancellation system. The signal is from about 80 cycles per second to about 500 cycles per second and sounds like a "chirp". The estimate is in the form of coefficients used in the adaptive filter (13) of the algorithm (15) used in generating the cancelling signal.
摘要翻译：在建立有源噪声消除系统中的误差路径损耗的初始估计中，采用包含待消除的全部频率范围的信号。该信号是每秒大约80个周期到大约每秒500个周期，听起来像一个“啁啾声”。估计是在用于产生消除信号的算法（15）的自适应滤波器（13）中使用的系数的形式。

7. 发明申请

WO1994024662A1 METHOD OF CALCULATING FILTER WEIGHTS FOR COMPRESSION WAVE CANCELLATION SYSTEMS 审中-公开
标题翻译：计算滤波器重量的方法，用于压缩波形消除系统
公开(公告)号：WO1994024662A1
公开(公告)日：1994-10-27
申请号：PCT/US1994004368
申请日：1994-04-20
申请人： SRI INTERNATIONAL
发明人： SRI INTERNATIONAL , MARTINEZ, J., Paul , COOLEY, Donald, W. , OETZEL, Kenneth, G. , WOODWORTH, Carla, P. , MASON, V., Bradford , OEKIN-MEZA, Julia, A. , HESSING, Anne, R. , PETERSON, D., Kent , STEINBERGER, Richard, H.
IPC分类号： G10K11/16
CPC分类号： H03H21/0012 , G10K11/178 , G10K2210/103 , G10K2210/3019 , G10K2210/3041 , G10K2210/3046 , G10K2210/3049 , G10K2210/3052 , G10K2210/3057 , G10K2210/3216
摘要： A method of calculating filter weights for a multichannel compression wave cancellation system (10) is characterized by the following steps: system configuration (48), calibration data collection (50), calibration data preprocessing (52), filter weight calculation (54), system performance simulation (56), and filter weight downloading (58). The filter weight calculation is preferably both for forward filters (F) and neutralization filters (N). The system configuration step specifies the numbers and locations of the input transducers (18) and output transducers (22). The data collection step determines the responses of all input transducers and quiet zone transducers (24) to a noise source (16) and selected output transducers. The preprocessing step windows, averages, deconvolves, and filters the calibration data in preparation for filter weight calculation. The forward and neutralization filter weights are derived from the preprocessed data and may be constrained to limit power or energy outputs. The forward filter weights for small multichannel systems may be calculated by a direct method, but for large multichannel systems an iterative method is preferred. Finally, system performance is simulated with the calculated forward and neutralization filter weights to determine if the filter weights need further refinement before they are downloaded into a hardware signal processing unit.
摘要翻译：计算多通道压缩波消除系统（10）的滤波器权重的方法的特征在于以下步骤：系统配置（48），校准数据采集（50），校准数据预处理（52），滤波器权重计算（54）系统性能仿真（56）和滤波器重量下载（58）。过滤器重量计算优选地用于正向过滤器（F）和中和过滤器（N）。系统配置步骤指定输入换能器（18）和输出换能器（22）的数量和位置。数据采集步骤确定所有输入换能器和安静区域换能器（24）到噪声源（16）和选择的输出换能器的响应。预处理步骤对准备过滤器重量计算的校准数据进行平均，去卷积和过滤。前向和中和滤波器权重来自预处理数据，并且可以被限制为限制功率或能量输出。小型多通道系统的前向滤波器权重可以通过直接方法计算，但对于大型多通道系统，优选迭代法。最后，利用计算的前向和中和滤波器权重来模拟系统性能，以确定滤波器权重是否需要在下载到硬件信号处理单元之前进一步细化。

8. 发明申请

WO1991012608A1 REPETITIVE PHENOMENA CANCELLATION ARRANGEMENT WITH MULTIPLE SENSORS AND ACTUATORS 审中-公开
标题翻译：多个传感器和执行器的重复式取消装置
公开(公告)号：WO1991012608A1
公开(公告)日：1991-08-22
申请号：PCT/US1991000756
申请日：1991-02-08
申请人： THE UNIVERSITY OF MARYLAND
发明人： THE UNIVERSITY OF MARYLAND , TRETTER, Steven, A.
IPC分类号： G10K11/16
CPC分类号： G10K11/178 , G10K2210/107 , G10K2210/1282 , G10K2210/3019 , G10K2210/3032 , G10K2210/3045 , G10K2210/3046 , G10K2210/3049 , G10K2210/3051 , G10K2210/3222
摘要： Repetitive phenomena cancelling controller arrangement for cancelling unwanted repetitive phenomena comprising known fundamental frequencies. The known frequencies are determined and an electrical known frequency signal corresponding to the known fundamental frequencies of the unwanted repetition phenomena is generated. A plurality of sensors are employed in which each sensor senses residual phenomena and generates an electrical residual phenomena signal representative of the residual phenomena. A plurality of actuators are provided for cancelling phenomena signals at a plurality of locations, and a controller is utilized for automatically controlling each of the actuators as a predetermined function of the known fundamental frequencies of the unwanted repetitive phenomena and of the residual phenomena signals from the plurality of sensors. In this arrangement the plurality of actuators operate to selectively cancel discrete harmonics of the known fundamental frequencies while accommodating interactions between the various sensors and actuators.

9. 发明申请

WO1988002912A1 ACTIVE VIBRATION CONTROL 审中-公开
标题翻译：主动振动控制
公开(公告)号：WO1988002912A1
公开(公告)日：1988-04-21
申请号：PCT/GB1987000706
申请日：1987-10-06
申请人： ADAPTIVE CONTROL LIMITED , ELLIOTT, Stephen, John , NELSON, Philip, Arthur , STOTHERS, Ian, McGregor
发明人： ADAPTIVE CONTROL LIMITED
IPC分类号： G10K11/16
CPC分类号： G10K11/178 , G10K2210/1282 , G10K2210/30232 , G10K2210/3032 , G10K2210/3046 , G10K2210/3048 , G10K2210/3049 , G10K2210/3212
摘要： To reduce noise inside a motor car passenger compartment, two loudspeakers (371, 372) are driven by signals derived from a reference signal x(n) by adaptive filtering carried out by a programmed microprocessor and memory unit (36) which adapts the filtering in dependence on error signals el(n) from four microphones (421, 422, 423 and 424) distributed in the passenger compartment. Reference filtering coefficients are initially determined by analysis of finite impulse responses when white noise is acoustically coupled from the loudspeakers (37) to the microphones (42), a white noise generator (48) being coupled to the unit (36). The reference signal x(n) is restricted to one or more selected harmonics or subharmonics of the fundamental noise frequency by a filter (34) which tracks the selected frequency. The selected frequency may be obtained from a coil (31) in the ignition circuit of the vehicle.
摘要翻译：为了减少机动车乘客舱内的噪音，通过由编程的微处理器和存储器单元（36）执行的自适应滤波，由参考信号x（n）导出的信号驱动两个扬声器（371,372），所述微处理器和存储单元（36）依赖于分配在乘客舱中的四个麦克风（421,422,423和424）的误差信号el（n）。参考滤波系数最初通过分析白噪声从扬声器（37）与麦克风（42）声学耦合的有限脉冲响应来确定，白噪声发生器（48）耦合到单元（36）。参考信号x（n）通过跟踪所选择的频率的滤波器（34）被限制为基本噪声频率的一个或多个选定的谐波或次谐波。选择的频率可以从车辆的点火电路中的线圈（31）获得。

10. 发明申请

WO2017035000A1 HYBRID ADAPTIVE NOISE CANCELLATION SYSTEM WITH FILTERED ERROR MICROPHONE SIGNAL 审中-公开
标题翻译：混合自适应噪声消除系统与过滤错误麦克风信号
公开(公告)号：WO2017035000A1
公开(公告)日：2017-03-02
申请号：PCT/US2016/047828
申请日：2016-08-19
申请人： CIRRUS LOGIC INTERNATIONAL SEMICONDUCTOR, LTD. , ZHOU, Dayong
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, a hybrid feed-forward/feedback 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 from a playback-corrected error signal.
摘要翻译：根据本公开的系统和方法，混合前馈/反馈自适应噪声消除系统可以包括校准滤波器，其配置成通过从播放中产生未对准校正信号来校正参考麦克风信号和误差麦克风信号的未对准校正错误信号。

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