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1. 发明申请

WO2008088389A2 METHODS AND SYSTEMS FOR CONTROLLING NOISE CANCELLATION 审中-公开
标题翻译：控制噪声消除的方法和系统
公开(公告)号：WO2008088389A2
公开(公告)日：2008-07-24
申请号：PCT/US2007/018509
申请日：2007-08-22
申请人： CATERPILLAR INC. , BRIGHAM YOUNG UNIVERSITY , COPLEY, David, C. , FABER, Benjamin, M. , SOMMERFELDT, Scott, D.
发明人： COPLEY, David, C. , FABER, Benjamin, M. , SOMMERFELDT, Scott, D.
IPC分类号： G10K11/178
CPC分类号： G10K11/178 , G10K2210/1282 , G10K2210/3052 , G10K2210/503
摘要： A method for detecting failure in a noise cancellation system is provided. The noise cancellation system is operable to at least partially cancel an unwanted noise produced by a noise source. The method includes receiving a cancellation noise signal fro the noise cancellation system. The cancellation noise signal represents a cancellation noise that, when combined with a target noise, is operable to at least partially cancel the target noise. The method also includes receiving an error signal approximately representing a portion of the target noise that remains after the cancellation noise and the target noise are combined. The method also includes determining whether the signal level changed or remains unchanged for each of the received cancellation noise signal and the error signal. The method also includes assigning a failure state of the noise cancellation system based on the determination and initiating a remedial measure that corresponds with the assigned failure state.
摘要翻译：提供了一种用于检测噪声消除系统中的故障的方法。噪声消除系统可操作以至少部分地消除由噪声源产生的不期望的噪声。该方法包括从噪声消除系统接收消除噪声信号。抵消噪声信号表示抵消噪声，当与目标噪声组合时，其可操作以至少部分地消除目标噪声。该方法还包括接收大致表示在消除噪声之后保持的目标噪声的一部分并且组合目标噪声的误差信号。该方法还包括确定对于接收到的消除噪声信号和误差信号中的每个信号电平是否改变或保持不变。该方法还包括基于该确定来分配噪声消除系统的故障状态，并启动与所分配的故障状态相对应的补救措施。

2. 发明申请

WO1994028620A1 HIGH FREQUENCY ACTIVE CANCELLATION 审中-公开
标题翻译：高频有效消除
公开(公告)号：WO1994028620A1
公开(公告)日：1994-12-08
申请号：PCT/US1994005640
申请日：1994-05-24
申请人： NOISE CANCELLATION TECHNOLOGIES, INC.
发明人： NOISE CANCELLATION TECHNOLOGIES, INC. , SMITH, Dexter
IPC分类号： H03B29/00
CPC分类号： G10K11/178 , G10K2210/3032 , G10K2210/3052
摘要： A high frequency active cancellation system (10) wherein a desired low frequency is mixed with higher frequencies to calculate coefficients that can be used to directly cancel higher frequencies using existing controller hardware.
摘要翻译：一种高频主动消除系统（10），其中期望的低频与更高频率混合以计算可以用于使用现有控制器硬件直接消除较高频率的系数。

3. 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。

4. 发明申请

WO2019123345A1 VIRTUAL TEST ENVIRONMENT FOR ACTIVE NOISE MANAGEMENT SYSTEMS 审中-公开
公开(公告)号：WO2019123345A1
公开(公告)日：2019-06-27
申请号：PCT/IB2018/060391
申请日：2018-12-20
申请人： HARMAN INTERNATIONAL INDUSTRIES, INCORPORATED
发明人： CAI, Tingli , VENKATA, Divya Sishtla , TRUMPY, David , KUMAR, Aditya
IPC分类号： H04S7/00
CPC分类号： H04S7/302 , G05B2219/23446 , G10K2210/1082 , G10K2210/1282 , G10K2210/3035 , G10K2210/3052 , G10K2210/504 , H04R2499/13 , H04S2420/01
摘要： A system for evaluating a noise management module of a vehicle includes a controller programmed to filter speaker signals from the noise management module using an auralization model to produce auralized sound signals that create a spatial effect to simulate sound in the vehicle at a predetermined position within the vehicle that is different than the positions corresponding to microphones used by the noise management module.

5. 发明申请

WO2008088389A3 METHODS AND SYSTEMS FOR CONTROLLING NOISE CANCELLATION 审中-公开
标题翻译：控制噪声消除的方法和系统
公开(公告)号：WO2008088389A3
公开(公告)日：2009-08-06
申请号：PCT/US2007018509
申请日：2007-08-22
申请人： CATERPILLAR INC , UNIV BRIGHAM YOUNG , COPLEY DAVID C , FABER BENJAMIN M , SOMMERFELDT SCOTT D
发明人： COPLEY DAVID C , FABER BENJAMIN M , SOMMERFELDT SCOTT D
IPC分类号： G10K11/178
CPC分类号： G10K11/178 , G10K2210/1282 , G10K2210/3052 , G10K2210/503
摘要： A method for detecting failure in a noise cancellation system is provided. The noise cancellation system is operable to at least partially cancel an unwanted noise produced by a noise source. The method includes receiving a cancellation noise signal fro the noise cancellation system. The cancellation noise signal represents a cancellation noise that, when combined with a target noise, is operable to at least partially cancel the target noise. The method also includes receiving an error signal approximately representing a portion of the target noise that remains after the cancellation noise and the target noise are combined. The method also includes determining whether the signal level changed or remains unchanged for each of the received cancellation noise signal and the error signal. The method also includes assigning a failure state of the noise cancellation system based on the determination and initiating a remedial measure that corresponds with the assigned failure state.
摘要翻译：提供了一种用于检测噪声消除系统中的故障的方法。噪声消除系统可操作以至少部分地消除由噪声源产生的不期望的噪声。该方法包括从噪声消除系统接收消除噪声信号。抵消噪声信号表示抵消噪声，当与目标噪声组合时，其可操作以至少部分地消除目标噪声。该方法还包括接收大致表示在消除噪声之后保持的目标噪声的一部分并且组合目标噪声的误差信号。该方法还包括确定对于接收到的消除噪声信号和误差信号中的每个信号电平是否改变或保持不变。该方法还包括基于该确定来分配噪声消除系统的故障状态，并启动与所分配的故障状态相对应的补救措施。

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