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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：US20060188107A1
公开(公告)日：2006-08-24
申请号：US11407247
申请日：2006-04-20
申请人： Toshio Inoue , Hisashi Sano , Akira Takahashi , Kenichi Terai , Hiroyuki Hashimoto , Isao Kakuhari
发明人： Toshio Inoue , Hisashi Sano , Akira Takahashi , Kenichi Terai , Hiroyuki Hashimoto , Isao Kakuhari
CPC分类号： G10K11/178
摘要： An active noise control system is capable of canceling out noise in the passenger compartment of a vehicle based on low-frequency road noise. The active noise control system has a feed-forward control unit for being supplied with reference signals highly correlated to noise from a noise source and generating a noise cancellation signal which is out of phase to noise in the passenger compartment of the vehicle, and a canceling sound generating unit disposed in the passenger compartment for generating a noise canceling sound in response to the noise cancellation signal from said feed-forward control unit. The active noise control system also has microphones for generating reference signals which are positioned respectively near the base of the front seat, near the center of a roof, and within a trunk compartment, i.e., respectively at vibrational antinodes of a primary or secondary acoustic normal mode of the passenger compartment in the longitudinal direction thereof. Output signals from the microphones are supplied as the reference signals.
摘要翻译： 主动噪声控制系统能够基于低频道路噪声消除车辆乘客舱内的噪声。 主动噪声控制系统具有前馈控制单元，用于提供与来自噪声源的噪声高度相关的参考信号，并产生噪声消除信号，该噪声消除信号在车辆的乘客舱中相位相差，并且取消 发声单元，其布置在所述乘客室中，用于响应于来自所述前馈控制单元的噪声消除信号产生噪声消除声音。 主动噪声控制系统还具有用于产生参考信号的麦克风，其分别位于靠近车顶中心的底座附近，并且在行李箱内，即分别位于初级或次级声学正常的振动波腹处 乘客舱的纵向的模式。 来自麦克风的输出信号作为参考信号提供。
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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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公开(公告)号：US07254240B2
公开(公告)日：2007-08-07
申请号：US11407247
申请日：2006-04-20
申请人： Toshio Inoue , Hisashi Sano , Akira Takahashi , Kenichi Terai , Hiroyuki Hashimoto , Isao Kakuhari
发明人： Toshio Inoue , Hisashi Sano , Akira Takahashi , Kenichi Terai , Hiroyuki Hashimoto , Isao Kakuhari
IPC分类号： A61F11/06
CPC分类号： G10K11/178
摘要： An active noise control system is capable of canceling out noise in the passenger compartment of a vehicle based on low-frequency road noise. The active noise control system has a feed-forward control unit for being supplied with reference signals highly correlated to noise from a noise source and generating a noise cancellation signal which is out of phase to noise in the passenger compartment of the vehicle, and a canceling sound generating unit disposed in the passenger compartment for generating a noise canceling sound in response to the noise cancellation signal from said feed-forward control unit. The active noise control system also has microphones for generating reference signals which are positioned respectively near the base of the front seat, near the center of a roof, and within a trunk compartment, i.e., respectively at vibrational antinodes of a primary or secondary acoustic normal mode of the passenger compartment in the longitudinal direction thereof. Output signals from the microphones are supplied as the reference signals.
摘要翻译： 主动噪声控制系统能够基于低频道路噪声消除车辆乘客舱内的噪声。 主动噪声控制系统具有前馈控制单元，用于提供与来自噪声源的噪声高度相关的参考信号，并产生噪声消除信号，该噪声消除信号在车辆的乘客舱中相位相差，并且取消 发声单元，其布置在所述乘客室中，用于响应于来自所述前馈控制单元的噪声消除信号产生噪声消除声音。 主动噪声控制系统还具有用于产生参考信号的麦克风，它们分别位于靠近屋顶的中心附近，并且位于屋顶的中心附近，并且位于主干室内，即分别位于主声级或次级声学法线的振动波腹 乘客舱的纵向的模式。 来自麦克风的输出信号作为参考信号提供。
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公开(公告)号：US07062049B1
公开(公告)日：2006-06-13
申请号：US09522178
申请日：2000-03-09
申请人： Toshio Inoue , Hisashi Sano , Akira Takahashi , Kenichi Terai , Hiroyuki Hashimoto , Isao Kakuhari
发明人： Toshio Inoue , Hisashi Sano , Akira Takahashi , Kenichi Terai , Hiroyuki Hashimoto , Isao Kakuhari
IPC分类号： A61F11/06
CPC分类号： G10K11/178
摘要： An active noise control system is capable of canceling out noise in the passenger compartment of a vehicle based on low-frequency road noise. The active noise control system has a feed-forward control unit for being supplied with reference signals highly correlated to noise from a noise source and generating a noise cancellation signal which is out of phase to noise in the passenger compartment of the vehicle, and a canceling sound generating unit disposed in the passenger compartment for generating a noise canceling sound in response to the noise cancellation signal from said feed-forward control unit. The active noise control system also has microphones for generating reference signals which are positioned respectively near the base of the front seat, near the center of a roof, and within a trunk compartment, i.e., respectively at vibrational antinodes of a primary or secondary acoustic normal mode of the passenger compartment in the longitudinal direction thereof. Output signals from the microphones are supplied as the reference signals.
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公开(公告)号：US08958568B2
公开(公告)日：2015-02-17
申请号：US12994025
申请日：2009-02-19
IPC分类号： G10K11/178
CPC分类号： G10K11/1788 , G10K11/178 , G10K2210/128 , G10K2210/3044
摘要： On an active noise controller, an adjustment reference signal generator generates an adjustment reference signal Sra by reading the waveform data sequentially at a read location shifted by a given amount from a read location for a reference signal Sr with respect to the waveform data at a reference signal generator. A one-tap adaptive filter generates a control signal Scp by multiplying the adjustment reference signal Sra by a filter factor W. A gain controller outputs a compensation control signal Sca generated by multiplying the control signal Scp by gain G. A speaker outputs the compensation control signal Sca as a cancellation sound.
摘要翻译： 在有源噪声控制器上，调整参考信号发生器通过在参考信号Sr的读取位置相对于基准信号Sr相对于波形数据的读取位置顺序地读取波形数据来生成调整参考信号Sra 信号发生器。 单抽头自适应滤波器通过将调整参考信号Sra乘以滤波器因子W来产生控制信号Scp。增益控制器输出通过将控制信号Scp乘以增益G而产生的补偿控制信号Sca。扬声器输出补偿控制 信号Sca作为取消声音。
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公开(公告)号：US08130974B2
公开(公告)日：2012-03-06
申请号：US11715850
申请日：2007-03-09
CPC分类号： H04S3/00 , H04R2499/13
摘要： An ASC generates a control signal based on an engine rotation frequency detected by an engine rotational speed detecting means, and a speaker outputs a sound effect depending on the control signal into a vehicle. The speaker is disposed in a substantially central area of a dashboard, in front of a driver seat and a front passenger seat of the vehicle, in the transverse direction of the vehicle.
摘要翻译： ASC根据由发动机转速检测装置检测的发动机旋转频率产生控制信号，并且扬声器根据控制信号输出到车辆中的声音效果。 扬声器设置在仪表板的大致中央区域中，在车辆的横向方向上位于驾驶员座椅前方和车辆的前排乘客座椅之间。
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公开(公告)号：US08064612B2
公开(公告)日：2011-11-22
申请号：US12206227
申请日：2008-09-08
IPC分类号： H03B29/00
CPC分类号： G10K11/178 , G10K2210/12821 , G10K2210/3025
摘要： A subtractor subtracts a first control signal output from a first bandpass filter from an error signal, and supplies a differential signal to a second bandpass filter. The second bandpass filter, which has a central frequency of 70 Hz, is affected by an operation of the first bandpass filter, i.e., a first control signal, which has a central frequency of 40 Hz. The first bandpass filter is not affected by an operation of the second bandpass filter, i.e., the second control signal.
摘要翻译： 减法器从误差信号中减去从第一带通滤波器输出的第一控制信号，并将差分信号提供给第二带通滤波器。 具有70Hz的中心频率的第二带通滤波器受到第一带通滤波器的操作，即具有40Hz的中心频率的第一控制信号的影响。 第一带通滤波器不受第二带通滤波器的操作，即第二控制信号的影响。
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公开(公告)号：US20110206213A1
公开(公告)日：2011-08-25
申请号：US13126431
申请日：2009-06-04
IPC分类号： H03B29/00
CPC分类号： G10K15/02 , G10K11/178 , G10K2210/1282
摘要： In an acoustic control system an operation range of an active type noise control device (an ANC device) and an operation range of an active type effect sound control device (an ASC device) are exchanged in accordance with the number of working cylinders of an engine.
摘要翻译： 在声控系统中，主动式噪声控制装置（ANC装置）的动作范围和主动式效果声音控制装置（ASC装置）的动作范围根据发动机的工作气缸数 。
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公开(公告)号：US07873173B2
公开(公告)日：2011-01-18
申请号：US11223950
申请日：2005-09-13
申请人： Toshio Inoue , Akira Takahashi
发明人： Toshio Inoue , Akira Takahashi
IPC分类号： A61F11/06
CPC分类号： G10K11/178 , G10K2210/1282 , G10K2210/3025 , G10K2210/3027 , G10K2210/3033 , G10K2210/511
摘要： A cosine wave over one period is stored as waveform data in a memory, and address shift values based on a phase lag in transfer characteristics from a speaker to a microphone are stored in a memory. An address shift value is read from the memory by referring to the frequency, and waveform data are read from the memory at addresses that are produced by shifting the addresses from which the reference cosine wave signal and the reference sine wave signal are read, by the address shift value. The read waveform data are used as a first reference signal and a second reference signal, which are applied to adaptive notch filters, to suppress vibratory noise.
摘要翻译： 一个周期中的余弦波作为波形数据存储在存储器中，并且基于从扬声器到麦克风的传送特性中的相位滞后的地址偏移值被存储在存储器中。 通过参考频率从存储器读取地址偏移值，并且从存储器中读取通过将参考余弦波信号和参考正弦波信号从其读取的地址移位而产生的地址的波形数据， 地址移位值。 读取的波形数据被用作施加到自适应陷波滤波器的第一参考信号和第二参考信号，以抑制振动噪声。
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