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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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公开(公告)号：US20080192948A1
公开(公告)日：2008-08-14
申请号：US11572269
申请日：2005-07-15
申请人： Yoichi Kan , Yoshio Nakamura , Masahide Onishi , Toshio Inoue , Akira Takahashi , Yasunori Kobayashi
发明人： Yoichi Kan , Yoshio Nakamura , Masahide Onishi , Toshio Inoue , Akira Takahashi , Yasunori Kobayashi
IPC分类号： G10K11/16
CPC分类号： F02B77/13 , B60R13/0838 , G10K11/178 , G10K2210/1282 , G10K2210/3039
摘要： An active noise control system cancels vibration and noise based on an output from an adaptive notch filter. When the difference between a current engine pulse value input to the adaptive notch filter and a past engine pulse value within a predetermined time period exceeds a predetermined level, an engine pulse monitor turns off a switch to stop the output from the adaptive notch filter. As a result, when there is a sudden change in the engine rpm, the output from the adaptive notch filter is stopped before the renewal speed of the adaptive notch filter coefficient becomes too fast to follow and the coefficient diverges, to prevent generation of abnormal sound. With this active noise control system, the user will not hear any abnormal sound from the adaptive notch filter even when there is a sudden change in the engine pulse.
摘要翻译： 主动噪声控制系统基于自适应陷波滤波器的输出消除振动和噪声。 当输入到自适应陷波滤波器的当前发动机脉冲值与预定时间段内的过去发动机脉冲值之间的差异超过预定值时，发动机脉冲监视器关闭开关以停止自适应陷波滤波器的输出。 结果，当发动机转速突然变化时，自适应陷波滤波器的输出在自适应陷波滤波器系数的更新速度变得太快而不能跟随并且系数发散之前就停止了自适应陷波滤波器的输出，以防止产生异常声音 。 使用这种主动噪声控制系统，即使发动机脉冲突然变化，用户也不会听到来自自适应陷波滤波器的任何异常声音。
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5.发明授权Apparatus for and method of actively controlling vibratory noise, and vehicle with active vibratory noise control apparatus 有权用于主动控制振动噪声的装置和方法，以及具有主动振动噪声控制装置的车辆公开(公告)号：US07352869B2
公开(公告)日：2008-04-01
申请号：US10859581
申请日：2004-06-03
CPC分类号： G10K11/178
摘要： The filter coefficients of an adaptive notch filter are sequentially updated to minimize an error signal based on the error signal and a first reference signal which is produced by subtracting a signal which represents the product of a sine corrective value C1 and a reference sine signal, from a signal which represents the product of a cosine corrective value C0 and a reference cosine signal. The filter coefficients of an adaptive notch filter are sequentially updated to minimize the error signal based on the error signal and a second reference signal which is produced by adding a signal which represents the product of the reference sine signal and the cosine corrective value C0 and a signal which represents the product of the reference cosine signal and the sine corrective value C1 to each other.
摘要翻译： 自适应陷波滤波器的滤波器系数被顺序地更新，以使基于误差信号的误差信号和通过减去表示正弦校正值C 1和参考正弦信号的乘积的信号产生的第一参考信号最小化， 从表示余弦校正值C 0和参考余弦信号的乘积的信号。 自适应陷波滤波器的滤波器系数被依次更新，以便根据误差信号和第二参考信号最小化误差信号，第二参考信号是通过将表示参考正弦信号和余弦校正值C 0的乘积的信号相加而产生的，以及 表示参考余弦信号和正弦校正值C 1的乘积的信号。
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6.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：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：US07340065B2
公开(公告)日：2008-03-04
申请号：US10855242
申请日：2004-05-27
CPC分类号： G10K11/178 , G10K2210/101 , G10K2210/128 , G10K2210/3012 , G10K2210/511
摘要： An active noise control system is provided which cancels a noise using a sound radiated from a speaker driven by an output from an adaptive notch filter. The system employs output signals from an adder or simulation cosine-wave and sine-wave signals, an error signal or an output signal from a microphone, and a compensated signal from the adder or a signal available for acoustically transferring an output from the adaptive notch filter to the microphone in accordance with initial transfer characteristics to update the filter coefficient of the adaptive notch filter. This configuration allows the system to operate with stability even when the acoustic transfer characteristics vary with time or under circumstances where there exists a significant amount of incoming external noises. The system also prevents overcompensation for a noise at the ears of a passenger in a vehicle, thereby proving an ideal noise reduction effect.
摘要翻译： 提供了一种主动噪声控制系统，其使用从由自适应陷波滤波器的输出驱动的扬声器辐射的声音消除噪声。 该系统采用来自加法器或模拟余弦波和正弦波信号的输出信号，来自麦克风的误差信号或输出信号，以及来自加法器的补偿信号或可用于声输出来自适应陷波的输出的信号 根据初始传输特性对麦克风进行滤波，以更新自适应陷波滤波器的滤波器系数。 这种配置允许系统即使当声传递特性随时间变化或在存在大量传入的外部噪声的情况下也能稳定地操作。 该系统还防止对车辆乘客耳朵的噪声进行过度补偿，从而证明理想的降噪效果。
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公开(公告)号：US06891954B2
公开(公告)日：2005-05-10
申请号：US09819718
申请日：2001-03-29
申请人： Akira Takahashi , Toshio Inoue , Tsuyoshi Yamashita , Hisashi Sano , Kenichi Terai , Hiroyuki Hashimoto , Isao Kakuhari , Yoshio Nakamura
发明人： Akira Takahashi , Toshio Inoue , Tsuyoshi Yamashita , Hisashi Sano , Kenichi Terai , Hiroyuki Hashimoto , Isao Kakuhari , Yoshio Nakamura
CPC分类号： H04B1/082 , G10K11/178
摘要： In an active noise control apparatus in which an audio signal and a noise control signal are mixed to thereby sound a loudspeaker inside a motor vehicle, a general-purpose audio head unit cannot conventionally be freely changed for the one already mounted on the motor vehicle. As a solution, an active noise control unit is provided with a buffer amplifier and a mixer. An audio signal amplified by a power amplifier in an audio head unit is adjusted in level by the buffer amplifier such that a level of an audio signal outputted after amplification by the first amplifier becomes substantially equal to a level of the audio signal outputted from the audio head unit. Then, at the mixer, a noise control signal outputted from an active noise controller is added to an audio signal outputted from the buffer amplifier. Therefore, any audio head unit can be freely changed for the one already mounted on the vehicle as long as the audio head unit contains therein a power amplifier.
摘要翻译： 在其中混合有音频信号和噪声控制信号从而在汽车内部发出扬声器的有源噪声控制装置中，通用音频头单元对于已经安装在机动车辆上的扬声器通常不能自由地改变。 作为解决方案，主动噪声控制单元设置有缓冲放大器和混频器。 由音频头单元中的功率放大器放大的音频信号由缓冲放大器调节，使得由第一放大器放大后输出的音频信号的电平基本上等于从音频输出的音频信号的电平 头单位 然后，在混频器中，将从有源噪声控制器输出的噪声控制信号加到从缓冲放大器输出的音频信号中。 因此，只要音频头单元包含功率放大器，任何音频头单元可以自由地改变已经安装在车辆上的音频头单元。
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公开(公告)号：US06990207B2
公开(公告)日：2006-01-24
申请号：US09864775
申请日：2001-05-24
申请人： Yoshio Nakamura , Toshihiko Ohashi , Kenichi Terai , Hiroyuki Hashimoto , Isao Kakuhari , Hisashi Sano , Toshio Inoue , Akira Takahashi , Tsuyoshi Yamashita
发明人： Yoshio Nakamura , Toshihiko Ohashi , Kenichi Terai , Hiroyuki Hashimoto , Isao Kakuhari , Hisashi Sano , Toshio Inoue , Akira Takahashi , Tsuyoshi Yamashita
IPC分类号： H03B29/00
CPC分类号： G10K11/178 , G10K2210/12821 , G10K2210/3039
摘要： An active noise control system for reducing road noise of low frequency generated inside the cabin of a vehicle is provided. The active noise control system includes a noise detector, a signal generator for processing the input noise signal to generate a signal for producing noise canceling waves, a limiting amplifier having a specified threshold value for variably amplifying the processed signal so that the amplitude of output signal will not exceed the threshold value, and an electrical acoustic converter for producing noise canceling acoustic waves in accordance with the output signal.
摘要翻译： 提供了一种用于减少车辆舱内产生的低频道路噪声的主动噪声控制系统。 有源噪声控制系统包括噪声检测器，用于处理输入噪声信号以产生产生噪声消除波的信号的信号发生器，具有指定阈值的限幅放大器，用于可变地放大经处理的信号，使得输出信号的幅度 将不超过阈值，以及用于根据输出信号产生噪声消除声波的电声转换器。
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