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公开(公告)号：US08014538B2
公开(公告)日：2011-09-06
申请号：US11573380
申请日：2006-07-21
CPC分类号： G10K11/178
摘要： An active noise reducing device includes switchover frequency memory which stores a speaker having weaker influence of level drop or dips in gain characteristics of transmission from first speaker and second speaker both working as secondary noise generators to microphone working as a residual signal detector, and also stores a frequency band of that speaker. Output switcher appropriately and selectively switches first speaker over to second speaker in response to the noise frequency at present calculated based on the rpm of engine by frequency calculator. This structure allows the active noise reducing device to work steadily even if level drop or a dip occurs in the gain characteristics of transmission from the speaker to the microphone, and allows suppressing the occurrence of abnormal sound due to divergence or distorted sound due to excessive output. Ideal noise reduction effect can be expected.
摘要翻译： 主动降噪装置包括：切换频率存储器，其存储扬声器，其具有作为辅助噪声发生器的第一扬声器和第二扬声器的发射增益特性中的电平下降或下降的影响较弱的影响，作为残留信号检测器的麦克风工作，并且还存储 该扬声器的频带。 输出切换器响应于目前基于频率计算器引擎的转速计算的噪声频率，适当地选择性地将第一扬声器切换到第二扬声器。 即使在从扬声器到麦克风的传输的增益特性中发生电平下降或下降，也能够抑制由于过度输出引起的发散或失真声音引起的异常声音的发生，因此该结构使得主动降噪装置能够稳定地工作。 。 理想的降噪效果可以预期。
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公开(公告)号：US20090279710A1
公开(公告)日：2009-11-12
申请号：US11573380
申请日：2006-07-21
IPC分类号： G10K11/178 , B60R11/02
CPC分类号： G10K11/178
摘要： An active noise reducing device includes switchover frequency memory which stores a speaker having weaker influence of level drop or dips in gain characteristics of transmission from first speaker and second speaker both working as secondary noise generators to microphone working as a residual signal detector, and also stores a frequency band of that speaker. Output switcher appropriately and selectively switches first speaker over to second speaker in response to the noise frequency at present calculated based on the rpm of engine by frequency calculator. This structure allows the active noise reducing device to work steadily even if level drop or a dip occurs in the gain characteristics of transmission from the speaker to the microphone, and allows suppressing the occurrence of abnormal sound due to divergence or distorted sound due to excessive output. Ideal noise reduction effect can be expected.
摘要翻译： 主动降噪装置包括：切换频率存储器，其存储扬声器，其具有作为辅助噪声发生器的第一扬声器和第二扬声器的发射增益特性中的电平下降或下降的影响较弱的影响，作为残留信号检测器的麦克风工作，并且还存储 该扬声器的频带。 输出切换器响应于目前基于频率计算器引擎的转速计算的噪声频率，适当地选择性地将第一扬声器切换到第二扬声器。 即使在从扬声器到麦克风的传输的增益特性中发生电平下降或下降，也能够抑制由于过度输出引起的发散或失真声音引起的异常声音的发生，因此该结构使得主动降噪装置能够稳定地工作。 。 理想的降噪效果可以预期。
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公开(公告)号：US20090074198A1
公开(公告)日：2009-03-19
申请号：US11911582
申请日：2006-07-07
IPC分类号： G10K11/16
CPC分类号： G10K11/178 , G10K2210/1282 , G10K2210/3019
摘要： Microphone is arranged at an evaluation point at the front seat; a signal for controlling vibration noise at this position is sent out from speaker at the front seat; secondary sound for canceling an influence of secondary sound at the front seat on the rear seat is sent out from speaker at the rear seat; microphone is arranged at an evaluation point at the rear seat; a signal for controlling vibration noise at this position is sent out from speaker; and secondary sound for canceling an influence of secondary sound at the rear seat on the front seat is sent out from speaker at the front seat.
摘要翻译： 麦克风安排在前排座位的评估点; 用于控制该位置的振动噪声的信号从前排座椅的扬声器发出; 在后排座椅上的扬声器发出用于消除后排座椅前排座椅上二次声音影响的二次声音; 麦克风布置在后座的评估点; 从扬声器发出用于控制该位置的振动噪声的信号; 并且在前排座椅上的扬声器发出用于消除前排座椅后排座椅上二次声音影响的二次声音。
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公开(公告)号：US08027484B2
公开(公告)日：2011-09-27
申请号：US11911582
申请日：2006-07-07
IPC分类号： G10K11/16 , G10K11/178 , H04B15/02 , G10K11/00 , H04B15/00
CPC分类号： G10K11/178 , G10K2210/1282 , G10K2210/3019
摘要： Microphone is arranged at an evaluation point at the front seat; a signal for controlling vibration noise at this position is sent out from speaker at the front seat; secondary sound for canceling an influence of secondary sound at the front seat on the rear seat is sent out from speaker at the rear seat; microphone is arranged at an evaluation point at the rear seat; a signal for controlling vibration noise at this position is sent out from speaker; and secondary sound for canceling an influence of secondary sound at the rear seat on the front seat is sent out from speaker at the front seat.
摘要翻译： 麦克风安排在前排座位的评估点; 用于控制该位置的振动噪声的信号从前排座椅的扬声器发出; 在后排座椅上的扬声器发出用于消除后排座椅前排座椅上二次声音影响的二次声音; 麦克风布置在后座的评估点; 从扬声器发出用于控制该位置的振动噪声的信号; 并且在前排座椅上的扬声器发出用于消除前排座椅后排座椅上二次声音影响的二次声音。
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5.发明授权Active vibratory noise control apparatus matching characteristics of audio devices 有权主动振动噪声控制装置匹配音频装置的特点公开(公告)号：US08160266B2
公开(公告)日：2012-04-17
申请号：US10869214
申请日：2004-06-17
IPC分类号： H04B1/00
CPC分类号： G10K11/178 , G10K2210/1282 , G10K2210/3225
摘要： An active vibratory noise control apparatus has a speaker for canceling vibratory noise in the passenger compartment of a vehicle, the speaker being used as a speaker of one of different audio devices that can be installed on the vehicle. Each of the audio devices has a command key switch assembly. When the command key switch assembly is operated to turn off the transistor, a control signal is applied to a switching control circuit in an active vibratory noise control unit, which identifies the audio device installed on the vehicle. The active vibratory noise control unit generates a canceling signal matching characteristics of the speaker of the identified audio device for canceling vibratory noise in the passenger compartment.
摘要翻译： 主动振动噪声控制装置具有用于消除车辆乘客室中的振动噪声的扬声器，扬声器用作可以安装在车辆上的不同音频装置之一的扬声器。 每个音频设备具有命令键开关组件。 当命令键开关组件被操作以关闭晶体管时，控制信号被施加到主动振动噪声控制单元中的开关控制电路，该主动振动噪声控制单元识别安装在车辆上的音频装置。 主动振动噪声控制单元产生用于消除乘客室中的振动噪声的所识别的音频设备的扬声器的抵消信号匹配特性。
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公开(公告)号：US20070172004A1
公开(公告)日：2007-07-26
申请号：US10587566
申请日：2005-11-08
IPC分类号： H03D1/04
CPC分类号： G10K11/178 , G10K2210/1282 , G10K2210/504
摘要： An active noise controller can determine the signal transmission characteristics from the power amplifier and the speaker to the microphone without using any special external measuring instrument and calculate a cosine correction value and a sine correction value without using an external computer. The active noise controller uses the cosine correction value and the sine correction value to actively reduce vibrational noise. The measurement mode is selected on touch panel (3), and correction value calculator (22) calculates cosine correction value C0 and sine correction value C1 by using filter coefficients W0 and W1 which allow error signal e′(n) to approach zero. Memory (23) stores these values C0 and C1.
摘要翻译： 有源噪声控制器可以确定从功率放大器和扬声器到麦克风的信号传输特性，而不使用任何特殊的外部测量仪器，并且不使用外部计算机来计算余弦校正值和正弦校正值。 有源噪声控制器使用余弦校正值和正弦校正值来主动减少振动噪声。 在触摸面板（3）上选择测量模式，并且校正值计算器（22）通过使用允许误差信号e'（n）的滤波器系数W 0和W 1来计算余弦校正值C 0和正弦校正值C 1 接近零。 存储器（23）存储这些值C 0和C 1。
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公开(公告)号：US20050053244A1
公开(公告)日：2005-03-10
申请号：US10936600
申请日：2004-09-09
IPC分类号： G01H3/00 , A61F11/06 , B60R11/02 , G10K11/16 , G10K11/178 , H03B29/00 , H03H17/02 , H03H21/00
CPC分类号： G10K11/17883 , G10K2210/128 , G10K2210/3046
摘要： In an active noise cancellation system having an adaptive filter that outputs a control signal, first and second speakers that emit a canceling signal generated based on the control signal, a microphone that detects an error signal, a correction filter that corrects the base signal by a correction value to generate a reference signal and a filter coefficient updater that successively updates the adaptive filter coefficient based on the error signal and reference signal such that the error signal is minimized, the correction value of the correction filter is set to a sum obtained by adding the transfer characteristic from the first speaker to the microphone, and a product obtained by multiplying the transfer characteristic from the second speaker to the microphone by the prescribed value, thereby enabling to reduce the number of microphones and avoid the increase in parts, the amount of work to provide complicated wiring to the microphones, and the computational load involved in updating the adaptive filter coefficient, while enabling to maintain an area in which noise can be reduced to the same level as that obtained before reducing the number of microphones.
摘要翻译： 在具有输出控制信号的自适应滤波器的有源噪声消除系统中，发射基于控制信号生成的消除信号的第一和第二扬声器，检测误差信号的麦克风，校正基本信号的校正滤波器， 用于产生参考信号的校正值和基于误差信号和参考信号连续更新自适应滤波器系数的滤波器系数更新器，使得误差信号最小化，校正滤波器的校正值被设置为通过加法获得的和 从第一扬声器到麦克风的传送特性，以及通过将来自第二扬声器的传送特性与麦克风相乘规定值获得的乘积，由此能够减少麦克风的数量并避免部件的增加， 努力为麦克风提供复杂的布线，以及更新中涉及的计算负荷 g的自适应滤波器系数，同时使得能够将噪声降低到与减少麦克风数量之前获得的相同水平的区域。
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公开(公告)号：US07620188B2
公开(公告)日：2009-11-17
申请号：US10866986
申请日：2004-06-15
IPC分类号： G10K11/16
CPC分类号： G10K11/178
摘要： An active vibratory noise control apparatus reduces vibratory noise which is produced in the passenger compartment of a vehicle based on vibratory noise generated by a variable-cylinder internal combustion engine that can selectively be operated in a full-cylinder operation mode in which all of the cylinders are operated and a partial-cylinder operation mode in which some of the cylinders are out of operation. The active vibratory noise control apparatus has a partial-cylinder operation mode determining circuit for determining whether the variable-cylinder internal combustion engine is in the partial-cylinder operation mode or not. Depending on a determined result from the partial-cylinder operation mode determining circuit, a transistor is turned on or off to switch an amplifying circuit which drives a speaker into and out of operation.
摘要翻译： 主动振动噪声控制装置减少了基于由可变气缸内燃机产生的振动噪声而产生的振动噪声，该可变气缸内燃机可选择性地以全气缸操作模式操作，其中所有汽缸 并且其中一些气缸不工作的部分气缸操作模式。 主动振动噪声控制装置具有用于判定可变气缸内燃机是否处于部分气缸操作模式的部分气缸操作模式确定电路。 根据来自部分气缸操作模式确定电路的确定结果，晶体管导通或截止以切换驱动扬声器的放大电路进入和断开。
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公开(公告)号：US07536018B2
公开(公告)日：2009-05-19
申请号：US10936600
申请日：2004-09-09
CPC分类号： G10K11/17883 , G10K2210/128 , G10K2210/3046
摘要： In an active noise cancellation system having an adaptive filter that outputs a control signal, first and second speakers that emit a canceling signal generated based on the control signal, a microphone that detects an error signal, a correction filter that corrects the base signal by a correction value to generate a reference signal and a filter coefficient updater that successively updates the adaptive filter coefficient based on the error signal and reference signal such that the error signal is minimized, the correction value of the correction filter is set to a sum obtained by adding the transfer characteristic from the first speaker to the microphone, and a product obtained by multiplying the transfer characteristic from the second speaker to the microphone by the prescribed value, thereby enabling to reduce the number of microphones and avoid the increase in parts, the amount of work to provide complicated wiring to the microphones, and the computational load involved in updating the adaptive filter coefficient, while enabling to maintain an area in which noise can be reduced to the same level as that obtained before reducing the number of microphones.
摘要翻译： 在具有输出控制信号的自适应滤波器的有源噪声消除系统中，发射基于控制信号生成的消除信号的第一和第二扬声器，检测误差信号的麦克风，校正基本信号的校正滤波器， 用于产生参考信号的校正值和基于误差信号和参考信号连续更新自适应滤波器系数的滤波器系数更新器，使得误差信号最小化，校正滤波器的校正值被设置为通过加法获得的和 从第一扬声器到麦克风的传送特性，以及通过将来自第二扬声器的传送特性与麦克风相乘规定值获得的乘积，由此能够减少麦克风的数量并避免部件的增加， 努力为麦克风提供复杂的布线，以及更新中涉及的计算负荷 g的自适应滤波器系数，同时使得能够将噪声降低到与减少麦克风数量之前获得的相同水平的区域。
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公开(公告)号：US07340064B2
公开(公告)日：2008-03-04
申请号：US10855238
申请日：2004-05-27
CPC分类号： G10K11/17825 , G10K11/17833 , G10K11/17879 , G10K2210/128 , G10K2210/3016 , G10K2210/30391
摘要： An active noise control system is provided which cancels a noise using a secondary noise from a speaker that is operated in accordance with an output from an adaptive controller. The system is configured such that microphone monitor interrupts a switch to thereby stop the secondary noise from being produced, when an error signal delivered by a microphone used for an adaptive computation in an LMS processing portion has the same sign for a predetermined duration. This allows the system to prevent the user from hearing an abnormal acoustic noise resulting from an abnormal operation or divergence of an adaptive filter even when the output signal from the microphone used for the adaptive computation is indicative of an abnormal level.
摘要翻译： 提供一种主动噪声控制系统，其使用根据来自自适应控制器的输出操作的扬声器的二次噪声来消除噪声。 当由用于LMS处理部分中的自适应计算的麦克风发送的误差信号在预定持续时间内具有相同符号时，该系统被配置为使得麦克风监视器中断开关，从而停止产生次级噪声。 这使得即使当来自用于自适应计算的麦克风的输出信号表示异常电平时，系统也可以防止用户听到由自适应滤波器的异常操作或发散引起的异常声音噪声。
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