公开(公告)号：US5426703A

公开(公告)日：1995-06-20

申请号：US883447

申请日：1992-05-15

申请人： Tsutomu Hamabe ,  Akio Kinoshita ,  Kazuhiro Doi ,  Yoshiharu Nakaji ,  Kenichiro Muraoka

发明人： Tsutomu Hamabe ,  Akio Kinoshita ,  Kazuhiro Doi ,  Yoshiharu Nakaji ,  Kenichiro Muraoka

IPC分类号： B60R11/02 ,  G10K11/178 ,  H04R3/02 ,  A61F11/06

CPC分类号： G10K11/1786 ,  G10K2210/121 ,  G10K2210/128 ,  G10K2210/30232 ,  G10K2210/3039 ,  G10K2210/30391 ,  G10K2210/3042 ,  G10K2210/3046 ,  G10K2210/3049 ,  G10K2210/3057 ,  G10K2210/503

摘要： An active noise eliminating system comprises microphones for detecting residual noise, speakers for generating noise elimination sound for interference with the residual noise, a noise generating condition sensor for generating noise condition, a controller for generating noise elimination signals inputted to the speakers and determined by the detected residual noise signals and the detected noise condition signal in accordance with a control algorithm including transfer functions between the speakers and microphones respectively. The transfer functions are updated on the basis of a test signal generated when noise sound diverges.

摘要翻译： 有源噪声消除系统包括用于检测残留噪声的麦克风，用于产生用于干扰残余噪声的噪声消除声音的扬声器，用于产生噪声条件的噪声产生条件传感器，用于产生输入到扬声器并由该扬声器确定的噪声消除信号的控制器 根据包括扬声器和麦克风之间的传递函数的控制算法，检测残留噪声信号和检测到的噪声条件信号。 传输函数根据噪声发散时产生的测试信号进行更新。

公开(公告)号：US4153815A

公开(公告)日：1979-05-08

申请号：US793275

申请日：1977-05-03

申请人： George B. B. Chaplin ,  Roderick A. Smith ,  Robert G. Bearcroft

发明人： George B. B. Chaplin ,  Roderick A. Smith ,  Robert G. Bearcroft

IPC分类号： G10K11/178 ,  H04B15/00 ,  G10L1/00

CPC分类号： G10K11/1784 ,  G10K2210/10 ,  G10K2210/3033 ,  G10K2210/3042 ,  G10K2210/3045 ,  G10K2210/3057

摘要： This invention concerns a method of, and apparatus for, reducing the ambient noise level at a location in the vicinity of a source of recurring noise. In its preferred embodiments the invention involves generating a series of cancelling noise signals which are exactly synchronized with the bursts of recurring noise from the source and adapting the cancelling signals in the series on the basis of the success achieved in nulling the noise from the source at the location.

摘要翻译： 本发明涉及减少重复噪声源附近的位置的环境噪声水平的方法和装置。 在其优选实施例中，本发明涉及产生一系列消除噪声信号，这些消除噪声信号与来自源的重复噪声的脉冲串精确地同步，并且基于在来自源的噪声归零中实现的成功来适应该系列中的消除信号 那个地点。

公开(公告)号：US09928823B2

公开(公告)日：2018-03-27

申请号：US15235470

申请日：2016-08-12

申请人： Bose Corporation

发明人： Cristian M. Hera ,  Hiroshi Miyazaki

IPC分类号： G10K11/16 ,  G10K11/178 ,  H04R3/04 ,  H04R29/00 ,  H04B1/00

CPC分类号： G10K11/178 ,  G10K2210/12821 ,  G10K2210/3027 ,  G10K2210/3055 ,  G10K2210/3057 ,  G10K2210/3221 ,  H04R3/04 ,  H04R29/001 ,  H04R2499/13

摘要： A method is provided for attenuating road noise in a vehicle cabin. The method includes filtering a noise signal representative of road noise with a first fixed filter to provide an attenuation signal, and filtering the attenuation signal with an adaptive filter to provide a first filtered attenuation signal. The first filtered attenuation signal is provided to an electro-acoustic transducer for transduction to acoustic energy, thereby to attenuate the road noise in a vehicle cabin at an expected position of an occupant's ears. The method also includes receiving a microphone signal representative of the acoustic energy, filtering the attenuation signal with a second fixed filter to provide a second filtered attenuation signal, and updating a set of variable filter coefficients of the adaptive filter based on the microphone signal and the second filtered attenuation signal to accommodate for variations in a transfer function of the speaker.

公开(公告)号：US20160071508A1

公开(公告)日：2016-03-10

申请号：US14839253

申请日：2015-08-28

申请人： Harman Becker Automotive Systems GmbH

发明人： Michael WURM ,  Markus CHRISTOPH

IPC分类号： G10K11/178

CPC分类号： G10K11/1784 ,  G10K11/178 ,  G10K2210/128 ,  G10K2210/1282 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3046 ,  G10K2210/3048 ,  G10K2210/3055 ,  G10K2210/3057 ,  G10K2210/3214 ,  G10K2210/504

摘要： A method for determining an estimation of a secondary path transfer characteristic in an ANC system is described herein. In accordance with one example of the invention, the method includes the positioning of a microphone array in a listening room symmetrically with respect to a desired listening position and reproducing at least one test signal using a loudspeaker arranged within the listening room to generate an acoustic signal. The acoustic signal is measured with the microphones of the microphone array to obtain a microphone signal from each microphone of the microphone array, and a numerical representation of the secondary path transfer characteristic is calculated for each microphone signal based on the test signal and the respective microphone signal. The method further includes averaging the calculated numerical representations of the secondary path transfer characteristic to obtain the estimation of the secondary path transfer characteristic to be used in the ANC system.

摘要翻译： 这里描述了用于确定ANC系统中的辅助路径传递特性的估计的方法。 根据本发明的一个示例，该方法包括将麦克风阵列相对于期望的收听位置对称地定位在收听室中，并且使用布置在收听室内的扬声器再现至少一个测试信号，以产生声信号 。 用麦克风阵列的麦克风测量声学信号以从麦克风阵列的每个麦克风获得麦克风信号，并且基于测试信号和相应的麦克风计算每个麦克风信号的辅助路径传递特性的数字表示 信号。 该方法还包括对二次路径传递特性的计算数值表示进行平均，以获得在ANC系统中使用的二次路径传递特性的估计。

公开(公告)号：US20240177702A1

公开(公告)日：2024-05-30

申请号：US18234615

申请日：2023-08-16

申请人： VERISILICON MICROELECTRONICS (SHANGHAI) CO., LTD.

发明人： Shaobo TU ,  Shuai LI

IPC分类号： G10K11/178

CPC分类号： G10K11/17823 ,  G10K11/17873 ,  G10K2210/1081 ,  G10K2210/3023 ,  G10K2210/3027 ,  G10K2210/3028 ,  G10K2210/3032 ,  G10K2210/3057

摘要： Provided are a noise reduction method and apparatus, a test method and apparatus, an electronic device, and a storage medium, relating to the fields of acoustics and audio. The noise reduction method includes: obtaining an environmental noise and obtaining an environmental spectrum feature of the environmental noise; obtaining a spectrum feature-filter coefficient correspondence; obtaining a target spectrum feature unit from the spectrum feature-filter coefficient correspondence according to the environmental spectrum feature; obtaining a filter coefficient in a filter coefficient unit corresponding to the target spectrum feature unit in the spectrum feature-filter coefficient correspondence as an environmental filter coefficient; and generating noise reduction audio according to the environmental filter coefficient.

公开(公告)号：US5361303A

公开(公告)日：1994-11-01

申请号：US41384

申请日：1993-04-01

申请人： Graham P. Eatwell

发明人： Graham P. Eatwell

IPC分类号： G10K11/178 ,  G10K11/16

CPC分类号： G10K11/1786 ,  G10K2210/117 ,  G10K2210/3025 ,  G10K2210/3042 ,  G10K2210/3046 ,  G10K2210/3053 ,  G10K2210/3057

摘要： A multiple-input, multiple-output adaptive control system which utilizes perturbations to the frequency components of the outputs to determine the desired changes to said coefficients. The control system is particularly suited to the active control of noise and vibration.

摘要翻译： 多输入多输出自适应控制系统，其利用对输出的频率分量的扰动来确定对所述系数的期望变化。 控制系统特别适用于主动控制噪声和振动。

公开(公告)号：US20170229109A1

公开(公告)日：2017-08-10

申请号：US15423995

申请日：2017-02-03

申请人： Panasonic Automotive Systems Company of America, Division of Panasonic Corporation of North America

发明人： BENJAMIN DAVID SWEET ,  RICHARD LAWRENCE COOPER

IPC分类号： G10K11/178

CPC分类号： G10K11/178 ,  G10K11/17883 ,  G10K2210/1282 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3052 ,  G10K2210/3057 ,  G10K2210/504

摘要： A vehicle includes an engine and/or powertrain producing noise that is audible in a passenger compartment of the vehicle when the engine and/or powertrain is running. An active noise control arrangement includes a first loudspeaker disposed within a passenger compartment of the vehicle. A digital signal processor receives audio data and transmits an audio signal to the first loudspeaker dependent upon the audio data. A microphone is disposed within the passenger compartment and converts the sound from the first loudspeaker and the noise within the passenger compartment into a microphone signal. The microphone signal is transmitted to the digital signal processor, and the digital signal processor modifies the audio signal such that the audio signal attenuates the noise in the passenger compartment. A vehicle processor transmits a simulated noise signal to a second loudspeaker for use in testing effectiveness of the active noise control arrangement in attenuating noise when the engine and/or powertrain is not running and not producing noise.

公开(公告)号：US09226066B2

公开(公告)日：2015-12-29

申请号：US13640244

申请日：2010-04-09

申请人： Yoshiki Ohta ,  Manabu Nohara ,  Yusuke Soga ,  Shin Hasegawa ,  Hisashi Kihara

发明人： Yoshiki Ohta ,  Manabu Nohara ,  Yusuke Soga ,  Shin Hasegawa ,  Hisashi Kihara

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

CPC分类号： H04R3/002 ,  G10K11/178 ,  G10K2210/3016 ,  G10K2210/3022 ,  G10K2210/3057

摘要： An active vibration noise control device is preferably used for canceling a vibration noise by making a speaker generate a control sound. Concretely, the active vibration noise control device includes an attenuating unit which attenuates a control signal generated by an adaptive notch filter, and provides the attenuated control signal to the speaker, when amplitude of a filter coefficient is larger than a threshold. Therefore, it is possible to suppress continuous ups and downs of the filter coefficient during an occurrence of an abnormality. Hence, it becomes possible to appropriately suppress an occurrence of a cyclic abnormal sound and an increase in the vibration noise during the occurrence of the abnormality.

摘要翻译： 主动振动噪声控制装置优选地通过使扬声器产生控制声音来消除振动噪声。 具体地，主动振动噪声控制装置包括：衰减单元，衰减由自适应陷波滤波器产生的控制信号，并且当滤波器系数的幅度大于阈值时，将衰减的控制信号提供给扬声器。 因此，可以在发生异常时抑制滤波器系数的连续上升和下降。 因此，可以适当地抑制异常发生期间的循环异常声音的发生和振动噪声的增加。

公开(公告)号：US4862506A

公开(公告)日：1989-08-29

申请号：US159908

申请日：1988-02-24

申请人： Harris B. Landgarten ,  Eldon W. Ziegler

发明人： Harris B. Landgarten ,  Eldon W. Ziegler

IPC分类号： F16F15/02 ,  G10K11/178

CPC分类号： G10K11/178 ,  F16F15/02 ,  G10K2210/3025 ,  G10K2210/3033 ,  G10K2210/3037 ,  G10K2210/3057 ,  G10K2210/503

摘要： A monitoring capability may be provided integral with or separate from a vibration cancellation system to monitor or display input and output signals and transfer functions as well as spectral waveforms. Testing is performed by monitoring and displaying the input and generating appropriate test signals while further monitoring and displaying the input. The ability to modify the characteristics of the vibration cancellation system is included.

摘要翻译： 监视功能可以与振动消除系统集成或分离，以监视或显示输入和输出信号以及传递功能以及频谱波形。 通过监视和显示输入并产生适当的测试信号进行测试，同时进一步监视和显示输入。 包括修改振动消除系统特性的能力。

公开(公告)号：US20190019492A1

公开(公告)日：2019-01-17

申请号：US16136380

申请日：2018-09-20

申请人： Panasonic Automotive Systems Company of America, Division of Panasonic Corporation of North America

发明人： BENJAMIN DAVID SWEET ,  RICHARD LAWRENCE COOPER

IPC分类号： G10K11/178

CPC分类号： G10K11/178 ,  G10K11/17883 ,  G10K2210/1282 ,  G10K2210/3026 ,  G10K2210/3027 ,  G10K2210/3052 ,  G10K2210/3057 ,  G10K2210/504

摘要： A vehicle includes an engine and/or powertrain producing noise that is audible in a passenger compartment of the vehicle when the engine and/or powertrain is running. An active noise control arrangement includes a first loudspeaker disposed within a passenger compartment of the vehicle. A digital signal processor receives audio data and transmits an audio signal to the first loudspeaker dependent upon the audio data. A microphone is disposed within the passenger compartment and converts the sound from the first loudspeaker and the noise within the passenger compartment into a microphone signal. The microphone signal is transmitted to the digital signal processor, and the digital signal processor modifies the audio signal such that the audio signal attenuates the noise in the passenger compartment. A vehicle processor transmits a simulated noise signal to a second loudspeaker for use in testing effectiveness of the active noise control arrangement in attenuating noise when the engine and/or powertrain is not running and not producing noise.