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    Noise controller
    1.
    发明授权
    Noise controller 失效
    噪音控制器

    公开(公告)号：US5499302A

    公开(公告)日：1996-03-12

    申请号：US455138

    申请日：1995-05-31

    申请人： Masaaki Nagami ,  Kazuya Sako ,  Masahiro Babasaki ,  Kazuhiro Sakiyama

    发明人： Masaaki Nagami ,  Kazuya Sako ,  Masahiro Babasaki ,  Kazuhiro Sakiyama

    IPC分类号： G10K11/178 ,  G10K11/16

    CPC分类号： G10K11/1784 ,  G10K2210/30232 ,  G10K2210/3033 ,  G10K2210/3045 ,  G10K2210/3049 ,  G10K2210/3052 ,  G10K2210/503

    摘要： In a noise controller which forms a noise cancelling sound having a phase opposite to and a sound pressure equal to those of a noise infiltrating into a closed space, any deviation in its transfer characteristics from the initial equalization is easily checked and judged owing to the provision of an adaptive filter which automatically varies the filter coefficient and forms a cancelling signal for forming a cancelling sound, a coefficient updating means which updates the filter coefficient based on an error signal after the noise has been cancelled, a simulated transfer characteristics compensation means which forms the initial equalization by simulating transfer characteristics of a transmission path via the space in which the noise is to be cancelled and forms a reproduced reference signal, a white noise generating means which generates white noise to check the initial equalization, and an initial equalization judging means which judges the accuracy of the initial equalization based on a ratio (S/N) of the reproduced reference signal obtained from white noise to the error signal. A change in the conditions for cancelling noise is detected in the closed space, and any deviation from the initial equalization is judged.

    摘要翻译： 在形成噪声消除声音的噪声控制器中，其噪声消除声音具有相当于与渗透到封闭空间中的噪声的相位相同的声压，因此容易检查其传输特性与初始均衡的偏差，并由于提供 自适应滤波器，其自动地改变滤波器系数并形成用于形成消除声音的抵消信号;系数更新装置，其基于噪声已被消除之后的误差信号来更新滤波器系数;模拟传送特性补偿装置，其形成 通过模拟通过要消除噪声的空间的传输路径的传输特性并形成再现的参考信号的初始均衡;产生白噪声以检查初始均衡的白噪声产生装置，以及初始均衡判定装置 其判断基于初始均衡的准确性 根据从白噪声获得的再现参考信号与误差信号的比（S / N）。 在封闭空间中检测到消除噪声的条件的改变，并且判断与初始均衡的任何偏差。

    Active sound control systems and sound reproduction systems
    3.
    发明授权
    Active sound control systems and sound reproduction systems 失效
    主动声控系统和声音再现系统

    公开(公告)号：US5381485A

    公开(公告)日：1995-01-10

    申请号：US113150

    申请日：1993-08-27

    申请人： Stephen J. Elliott

    发明人： Stephen J. Elliott

    IPC分类号： G10K11/178 ,  H04R3/00 ,  G10K11/16

    CPC分类号： H04R3/00 ,  G10K11/1782 ,  G10K2210/1081 ,  G10K2210/3011 ,  G10K2210/3048 ,  G10K2210/3052

    摘要： With reference to FIG. 1, an active sound control system comprises a loudspeaker LS having an input qs and operable to generate sound waves for interference with unwanted sound so as to produce a region close to the user of the system in which the perceived sound is substantially reduced. A monitoring microphone ro is positioned closer to the loudspeaker LS than to the region of sound reduction. Loudspeaker control means for controlling the input qs to the loudspeaker LS operate to energise the loudspeaker such that the sound waves emitted by the loudspeaker substantially cancel the unwanted sound waves in said region. The loudspeaker control means includes a signal processing means (FIG. 3) arranged to simulate a microphone output that would be obtained if that microphone, instead of being positioned closer to the loudspeaker LS than the user, were to be positioned in a notional position ra relatively close to the user. The resulting simulated or virtual microphone output is then used to control the signal fed to the loudspeaker input qs.

    摘要翻译： 参考图1。 如图1所示，主动声控系统包括扬声器LS，其具有输入qs并且可操作以产生用于干扰不想要的声音的声波，从而产生靠近系统用户的区域，其中觉察到的声音显着减少。 监视麦克风ro比声音减少区域更靠近扬声器LS定位。 用于控制扬声器LS的输入qs的扬声器控制装置操作以使扬声器通电，使得由扬声器发射的声波基本上消除了所述区域中的不需要的声波。 扬声器控制装置包括信号处理装置（图3），该信号处理装置（图3）用于模拟麦克风输出，如果麦克风不是被放置得比用户更靠近扬声器LS被定位在名义上的位置 比较接近用户。 所得到的模拟或虚拟麦克风输出然后用于控制馈送到扬声器输入qs的信号。

    Simulation method and system for noise environment of vehicle
    4.
    发明授权
    Simulation method and system for noise environment of vehicle 有权

    公开(公告)号：US12080266B2

    公开(公告)日：2024-09-03

    申请号：US17878606

    申请日：2022-08-01

    申请人： HYUNDAI MOTOR COMPANY ,  Kia Corporation

    发明人： Chi Sung Oh ,  Kaang Dok Yee

    IPC分类号： G10K11/178

    CPC分类号： G10K11/17881 ,  G10K11/17823 ,  G10K2210/1282 ,  G10K2210/3052

    摘要： The present disclosure provides a device and method for simulating a noise environment of a vehicle. The simulation system includes a memory configured to store a reference sample signal and a noise sample signal, a speaker configured to convert an electrical signal into a sound wave and output the sound wave, and a control unit configured to generate a reference signal based on the reference sample signal, generate a noise signal based on the noise sample signal, transmit the reference signal to a noise control system, output the noise signal through the speaker, and adjust at least one of a transmission time of a next reference signal or an output time of a next noise signal based on a reception time at which the noise control system receives the reference signal and a measurement time at which the noise control system measures the noise signal.

    Active noise control system with detouring sound apparatus
    5.
    发明授权
    Active noise control system with detouring sound apparatus 失效
    具有迂回音响设备的主动噪声控制系统

    公开(公告)号：US5583943A

    公开(公告)日：1996-12-10

    申请号：US614919

    申请日：1996-03-11

    申请人： Tadashi Ohashi ,  Tsutomu Hoshino ,  Atsushi Yamaguchi

    发明人： Tadashi Ohashi ,  Tsutomu Hoshino ,  Atsushi Yamaguchi

    IPC分类号： F24F13/02 ,  G10K11/16 ,  G10K11/178 ,  A61F11/06 ,  H03B29/00

    CPC分类号： G10K11/178 ,  F24F2013/247 ,  G10K2210/109 ,  G10K2210/112 ,  G10K2210/3011 ,  G10K2210/30232 ,  G10K2210/3041 ,  G10K2210/3052 ,  G10K2210/3053

    摘要： An active noise elimination apparatus for eliminating noise generated from a blower by generating from a sound generation unit a sound which offsets the noise, in a cooling system for cooling a heat source by air blown from the blower and exhausted to an exhaust port of the system through a duct, includes a first sound reception unit for receiving the noise generated from the blower; a first simulation unit for outputting a sound to the sound generation unit simulating the noise generated from the blower and transmitted to the exhaust port through the duct; a second simulation unit for receiving as input a noise simulating signal of the first simulation unit so as to simulate a detouring sound generated from the sound generation unit and transmitted to the first sound reception unit through the duct; and a subtraction unit for subtracting the detouring sound simulating signal of the second simulation unit from the noise signal received by the first sound reception unit and outputting the result to the first simulation unit.

    摘要翻译： 一种主动噪声消除装置，用于消除由声音产生单元产生的声音，从发声单元产生抵消噪声的声音，在冷却系统中，用于通过从鼓风机吹出并被排出到系统的排气口的空气来冷却热源 通过导管包括用于接收从鼓风机产生的噪声的第一声音接收单元; 第一模拟单元，用于向声音产生单元输出模拟从鼓风机产生的噪声并通过导管传送到排气口的声音; 第二模拟单元，用于接收第一模拟单元的噪声模拟信号作为输入，以便模拟从声音产生单元产生的并通过导管传送到第一声音接收单元的迂回声音; 以及减法单元，用于从由第一声音接收单元接收的噪声信号中减去第二模拟单元的迂回声音模拟信号，并将结果输出到第一模拟单元。

    Methods and systems for controlling noise cancellation
    7.
    发明申请
    Methods and systems for controlling noise cancellation 有权
    控制噪声消除的方法和系统

    公开(公告)号：US20080159553A1

    公开(公告)日：2008-07-03

    申请号：US11646417

    申请日：2006-12-28

    申请人： David C. Copley ,  Benjamin Mahonri Faber ,  Scott D. Sommerfeldt

    发明人： David C. Copley ,  Benjamin Mahonri Faber ,  Scott D. Sommerfeldt

    IPC分类号： G10K11/16

    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 from 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。

    Methods and systems for controlling noise cancellation
    10.
    发明授权
    Methods and systems for controlling noise cancellation 有权
    控制噪声消除的方法和系统

    公开(公告)号：US08068616B2

    公开(公告)日：2011-11-29

    申请号：US11646417

    申请日：2006-12-28

    申请人： David C. Copley ,  Benjamin Mahonri Faber ,  Scott D. Sommerfeldt

    发明人： David C. Copley ,  Benjamin Mahonri Faber ,  Scott D. Sommerfeldt

    IPC分类号： A61F11/06 ,  G10K11/16 ,  H04R29/00

    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 from 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。