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1. 发明申请

US20120195439A1 ACTIVE VIBRATION NOISE CONTROL DEVICE 审中-公开
标题翻译：主动振动噪声控制装置
公开(公告)号：US20120195439A1
公开(公告)日：2012-08-02
申请号：US13499790
申请日：2009-10-07
申请人： Yoshiki Ohta , Manabu Nohara , Yusuke Soga , Kensaku Obata , Akihiro Iseki
发明人： Yoshiki Ohta , Manabu Nohara , Yusuke Soga , Kensaku Obata , Akihiro Iseki
IPC分类号： G10K11/16
CPC分类号： G10K11/178 , G10K2210/1282 , G10K2210/3054
摘要： An active vibration noise control device is preferably used for cancelling a vibration noise by making a speaker generate a control sound. The active vibration noise control device includes a step-size parameter changing unit which changes a step-size parameter used for updating a filter coefficient. The step-size parameter changing unit calculates a parameter-for-change based on the filter coefficient updated by using a basic step-size parameter, and changes the basic step-size parameter by a minimum value in the previously calculated parameter-for-change. Therefore, it is possible to appropriately change the step-size parameter by using the minimum value of the parameter-for-change. Hence, it becomes possible to effectively suppress a divergence of an adaptive notch filter due to a secular change of the speaker.
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。主动振动噪声控制装置包括改变用于更新滤波器系数的步长参数的步长参数改变单元。步长参数改变单元基于通过使用基本步长参数更新的滤波器系数来计算变化参数，并且将基本步长参数改变为先前计算的变化参数中的最小值。因此，可以通过使用变更参数的最小值来适当地改变步长参数。因此，可以有效地抑制由于扬声器的长期变化引起的自适应陷波滤波器的发散。

2. 发明授权

US09484010B2 Active vibration noise control device, active vibration noise control method and active vibration noise control program 有权
标题翻译：主动振动噪声控制装置，主动振动噪声控制方法和主动振动噪声控制程序
公开(公告)号：US09484010B2
公开(公告)日：2016-11-01
申请号：US13977253
申请日：2011-01-06
申请人： Manabu Nohara , Yoshiki Ohta , Kensaku Obata , Yusuke Soga
发明人： Manabu Nohara , Yoshiki Ohta , Kensaku Obata , Yusuke Soga
IPC分类号： G10K11/178
CPC分类号： G10K11/178 , G10K11/17883 , G10K2210/1282 , G10K2210/3023 , G10K2210/3028
摘要： An active vibration noise control device obtains error signals corresponding to a cancellation error between vibration noise and control sounds generated by multiple speakers, from microphone(s), and actively controls the vibration noise. A basic signal generating unit generates a basic signal based on a vibration noise frequency. An adaptive notch filter unit generates control signals provided to each of the multiple speakers by applying a filter coefficient to the basic signal. A reference signal generating unit generates a reference signal from the basic signal based on multiple transfer characteristics from the multiple speakers to the one or more microphones. A filter coefficient updating unit updates the filter coefficient used by the adaptive notch filter unit so as to minimize the error signals. A controlling unit changes amplitude of the control signals of the speakers based on a similarity between the transfer characteristics and characteristics of the vibration noise.
摘要翻译：主动振动噪声控制装置从麦克风获得对应于由多个扬声器产生的振动噪声和控制声之间的抵消误差的误差信号，并且主动地控制振动噪声。基本信号生成单元基于振动噪声频率生成基本信号。自适应陷波滤波器单元通过对基本信号施加滤波器系数来产生提供给多个扬声器中的每一个的控制信号。参考信号生成单元基于从多个扬声器到一个或多个麦克风的多个传送特性，从基本信号生成参考信号。滤波器系数更新单元更新由自适应陷波滤波器单元使用的滤波器系数，以使误差信号最小化。控制单元基于传递特性和振动噪声的特性之间的相似度来改变扬声器的控制信号的幅度。

3. 发明申请

US20130279712A1 ACTIVE VIBRATION NOISE CONTROL DEVICE, ACTIVE VIBRATION NOISE CONTROL METHOD AND ACTIVE VIBRATION NOISE CONTROL PROGRAM 有权
标题翻译：主动振动噪声控制装置，主动振动噪声控制方法和主动振动噪声控制程序
公开(公告)号：US20130279712A1
公开(公告)日：2013-10-24
申请号：US13977253
申请日：2011-01-06
申请人： Manabu Nohara , Yoshiki Ohta , Kensaku Obata , Yusuke Soga
发明人： Manabu Nohara , Yoshiki Ohta , Kensaku Obata , Yusuke Soga
IPC分类号： G10K11/178
CPC分类号： G10K11/178 , G10K11/17883 , G10K2210/1282 , G10K2210/3023 , G10K2210/3028
摘要： An active vibration noise control device obtains error signals corresponding to a cancellation error between vibration noise and control sounds generated by multiple speakers, from microphone(s), and actively controls the vibration noise. A basic signal generating unit generates a basic signal based on a vibration noise frequency. An adaptive notch filter unit generates control signals provided to each of the multiple speakers by applying a filter coefficient to the basic signal. A reference signal generating unit generates a reference signal from the basic signal based on multiple transfer characteristics from the multiple speakers to the one or more microphones. A filter coefficient updating unit updates the filter coefficient used by the adaptive notch filter unit so as to minimize the error signals. A controlling unit changes amplitude of the control signals of the speakers based on a similarity between the transfer characteristics and characteristics of the vibration noise.
摘要翻译：主动振动噪声控制装置从麦克风获得对应于由多个扬声器产生的振动噪声和控制声之间的抵消误差的误差信号，并且主动地控制振动噪声。基本信号生成单元基于振动噪声频率生成基本信号。自适应陷波滤波器单元通过对基本信号施加滤波器系数来产生提供给多个扬声器中的每一个的控制信号。参考信号生成单元基于从多个扬声器到一个或多个麦克风的多个传送特性，从基本信号生成参考信号。滤波器系数更新单元更新由自适应陷波滤波器单元使用的滤波器系数，以使误差信号最小化。控制单元基于传递特性和振动噪声的特性之间的相似度来改变扬声器的控制信号的幅度。

4. 发明申请

US20120300955A1 ACTIVE VIBRATION NOISE CONTROL DEVICE 有权
标题翻译：主动振动噪声控制装置
公开(公告)号：US20120300955A1
公开(公告)日：2012-11-29
申请号：US13578727
申请日：2010-02-15
申请人： Akihiro Iseki , Yoshiki Ohta , Yoshitomo Imanishi , Kensaku Obata
发明人： Akihiro Iseki , Yoshiki Ohta , Yoshitomo Imanishi , Kensaku Obata
IPC分类号： G10K11/36
CPC分类号： G10K11/1786 , G10K11/178 , G10K2210/12821 , H04R3/02
摘要： An active vibration noise control device cancels vibration noise by making plural speakers generate control sounds. The active vibration noise control device selects one or more speakers which output the control sounds, from plural speakers, based on a relationship between (1) a first phase difference which corresponds to a difference between phase characteristics of the vibration noise from a vibration noise source to an evaluation point and phase characteristics of the vibration noise from the vibration noise source to a pseudo evaluation point and (2) a second phase difference for each of the plural speakers corresponding to a difference between phase characteristics of the control sound from the speaker to the evaluation point and phase characteristics of the control sound from the speaker to the pseudo evaluation point. Therefore, it stably decreases the vibration noise at the pseudo evaluation point independently of a frequency band of the vibration noise.
摘要翻译：主动振动噪声控制装置通过使多个扬声器产生控制声音来消除振动噪声。主动振动噪声控制装置根据（1）对应于来自振动噪声源的振动噪声的相位特性之差的第一相位差之间的关系，从多个扬声器中选择输出控制声音的一个或多个扬声器涉及从振动噪声源到伪评估点的振动噪声的评估点和相位特性，以及（2）对应于来自扬声器的控制声音的相位特性之间的差异的多个扬声器中的每一个的第二相位差控制声音从扬声器到伪评估点的评估点和相位特性。因此，独立于振动噪声的频带，可以稳定地降低伪评估点的振动噪声。

5. 发明申请

US20110268298A1 SOUND FIELD CORRECTING DEVICE 审中-公开
标题翻译：声场校正装置
公开(公告)号：US20110268298A1
公开(公告)日：2011-11-03
申请号：US13141581
申请日：2008-12-25
申请人： Yoshitomo Imanishi , Yoshiki Ohta , Kensaku Obata , Akihiro Iseki
发明人： Yoshitomo Imanishi , Yoshiki Ohta , Kensaku Obata , Akihiro Iseki
IPC分类号： H04R5/00
CPC分类号： H04S7/00
摘要： At least two speakers are arranged in the left-right direction, and the measurement signal generating unit generates the measurement signal from the two speakers. The measurement signal outputting unit outputs the measurement signal. The measurement signal collecting unit collects the measurement signal for the left-right direction from at least two positions along the left-right direction axis in the acoustic space. The delay correcting unit performs the delay adjustment for any one of the speakers in the acoustic space, based on information that the measurement signal collecting unit obtains by collecting the measurement signal for the left-right direction, until the level difference in the left-right direction becomes equal to or smaller than the predetermined value. The sound field correcting device collects the measurement signal from two positions along the left-right direction axis, and reduces the level difference in the left-right direction based on the information obtained by collecting the sound.
摘要翻译：至少两个扬声器被布置在左右方向上，并且测量信号产生单元从两个扬声器产生测量信号。测量信号输出单元输出测量信号。测量信号收集单元从声学空间中沿着左右方向轴的至少两个位置收集左右方向的测量信号。延迟校正单元基于测量信号采集单元通过收集左右方向的测量信号获得的信息，对声学空间中的任何一个扬声器进行延迟调整，直到左右的水平差方向变得等于或小于预定值。声场校正装置从左右方向轴的两个位置收集测量信号，并且基于通过收集声音获得的信息来减小左右方向上的电平差。

6. 发明申请

US20130044891A1 ACTIVE VIBRATION NOISE CONTROL DEVICE 有权
标题翻译：主动振动噪声控制装置
公开(公告)号：US20130044891A1
公开(公告)日：2013-02-21
申请号：US13579042
申请日：2010-02-18
申请人： Kensaku Obata , Yoshiki Ohta , Yoshitomo Imanishi , Akihiro Iseki
发明人： Kensaku Obata , Yoshiki Ohta , Yoshitomo Imanishi , Akihiro Iseki
IPC分类号： H03B29/00
CPC分类号： G10K11/1786 , G10K11/178 , G10K2210/1282 , G10K2210/3056 , G10K2210/503
摘要： The disclosed active vibration noise control device is suitable for use in cancelling out vibration noise by outputting control noise from a plurality of speakers. When a vibration noise frequency is in a dip bandwidth, the active vibration noise control device alters the step size parameters used to update the filter coefficient at at least one filter coefficient update means from among a plurality of filter coefficient update means. Thus, the filter coefficient update speed can be retarded in unstable dip bandwidths, enabling loss in silencing effect which occurs during dip characteristics to be appropriately reduced.
摘要翻译：所公开的主动振动噪声控制装置适用于通过从多个扬声器输出控制噪声来消除振动噪声。当振动噪声频率处于倾斜带宽时，主动振动噪声控制装置从多个滤波器系数更新装置中改变用于更新至少一个滤波器系数更新装置的滤波器系数的步长参数。因此，在不稳定的浸渍带宽中可以延迟滤波器系数更新速度，能够适当降低在浸渍特性期间发生的消音效应的损失。

7. 发明申请

US20120155651A1 SOUND FIELD ADJUSTMENT DEVICE 审中-公开
标题翻译：声场调整装置
公开(公告)号：US20120155651A1
公开(公告)日：2012-06-21
申请号：US13380404
申请日：2010-06-18
申请人： Kensaku Obata , Akihiro Iseki , Yoshiki Ohta
发明人： Kensaku Obata , Akihiro Iseki , Yoshiki Ohta
IPC分类号： H04R5/00
CPC分类号： H04S3/002
摘要： A sound field adjusting device reproduces signals from plural speaker pairs arranged in an acoustic space. The device supplies signals to the plural speakers, gives different delays for the respective frequency bands to the signals supplied to at least to a proximity speaker pair which is a speaker pair closest to a listening position among the plural speakers, and gives a delay of a constant delay amount regardless of the frequency band to the speaker pairs other than the speaker pair to which the delays of different delay amounts for the respective frequency bands are given. In this case, the sound field adjusting device does not perform level adjustment, and the sound field adjustment is performed by only adjusting the delay amounts. Therefore, deterioration of sound pressure balance at the position other than the listening position can be avoided, and sound pressure balance at the listening position improved.
摘要翻译：声场调节装置再现来自布置在声学空间中的多个扬声器对的信号。该装置向多个扬声器提供信号，给予至少提供给作为多个扬声器中最接近收听位置的扬声器对的接近扬声器对的信号的各个频带的不同延迟，并给出延迟不考虑向给定各个频带的不同延迟量的延迟的扬声器对之外的扬声器对的频带的恒定延迟量。在这种情况下，声场调整装置不进行电平调整，仅通过调整延迟量进行声场调整。因此，可以避免在收听位置以外的位置处的声压平衡的恶化，并且提高收听位置的声压平衡。

8. 发明授权

US09318095B2 Active vibration noise control device 有权
标题翻译：主动振动噪声控制装置
公开(公告)号：US09318095B2
公开(公告)日：2016-04-19
申请号：US13579042
申请日：2010-02-18
申请人： Kensaku Obata , Yoshiki Ohta , Yoshitomo Imanishi , Akihiro Iseki
发明人： Kensaku Obata , Yoshiki Ohta , Yoshitomo Imanishi , Akihiro Iseki
IPC分类号： A61F11/06 , G10K11/178
CPC分类号： G10K11/1786 , G10K11/178 , G10K2210/1282 , G10K2210/3056 , G10K2210/503
摘要： The disclosed active vibration noise control device is suitable for use in cancelling out vibration noise by outputting control noise from a plurality of speakers. When a vibration noise frequency is in a dip bandwidth, the active vibration noise control device alters the step size parameters used to update the filter coefficient at at least one filter coefficient update means from among a plurality of filter coefficient update means. Thus, the filter coefficient update speed can be retarded in unstable dip bandwidths, enabling loss in silencing effect which occurs during dip characteristics to be appropriately reduced.
摘要翻译：所公开的主动振动噪声控制装置适用于通过从多个扬声器输出控制噪声来消除振动噪声。当振动噪声频率处于倾斜带宽时，主动振动噪声控制装置从多个滤波器系数更新装置中改变用于更新至少一个滤波器系数更新装置的滤波器系数的步长参数。因此，在不稳定的浸渍带宽中可以延迟滤波器系数更新速度，能够适当降低在浸渍特性期间发生的消音效应的损失。

9. 发明授权

US09123325B2 Active vibration noise control device 有权
标题翻译：主动振动噪声控制装置
公开(公告)号：US09123325B2
公开(公告)日：2015-09-01
申请号：US13578727
申请日：2010-02-15
申请人： Akihiro Iseki , Yoshiki Ohta , Yoshitomo Imanishi , Kensaku Obata
发明人： Akihiro Iseki , Yoshiki Ohta , Yoshitomo Imanishi , Kensaku Obata
IPC分类号： G10K11/178 , H04R3/02
CPC分类号： G10K11/1786 , G10K11/178 , G10K2210/12821 , H04R3/02
摘要： An active vibration noise control device cancels vibration noise by making plural speakers generate control sounds. The active vibration noise control device selects one or more speakers which output the control sounds, from plural speakers, based on a relationship between (1) a first phase difference which corresponds to a difference between phase characteristics of the vibration noise from a vibration noise source to an evaluation point and phase characteristics of the vibration noise from the vibration noise source to a pseudo evaluation point and (2) a second phase difference for each of the plural speakers corresponding to a difference between phase characteristics of the control sound from the speaker to the evaluation point and phase characteristics of the control sound from the speaker to the pseudo evaluation point. Therefore, it stably decreases the vibration noise at the pseudo evaluation point independently of a frequency band of the vibration noise.
摘要翻译：主动振动噪声控制装置通过使多个扬声器产生控制声音来消除振动噪声。主动振动噪声控制装置根据（1）对应于来自振动噪声源的振动噪声的相位特性之差的第一相位差之间的关系，从多个扬声器中选择输出控制声音的一个或多个扬声器涉及从振动噪声源到伪评估点的振动噪声的评估点和相位特性，以及（2）对应于来自扬声器的控制声音的相位特性之间的差异的多个扬声器中的每一个的第二相位差控制声音从扬声器到伪评估点的评估点和相位特性。因此，独立于振动噪声的频带，可以稳定地降低伪评估点的振动噪声。

10. 发明申请

US20110058684A1 AUDIO REPRODUCTION DEVICE 审中-公开
标题翻译：音频再现设备
公开(公告)号：US20110058684A1
公开(公告)日：2011-03-10
申请号：US12991478
申请日：2008-05-27
申请人： Yoshiki Ohta , Kensaku Obata
发明人： Yoshiki Ohta , Kensaku Obata
IPC分类号： H04R1/40
CPC分类号： H04S1/00 , H04R2499/13
摘要： An audio reproduction device reproduces a one-channel signal from two speakers arranged in a sound field. The one-channel input signal is delayed by a delay element. The delay element performs a delay with different delay amount for a plurality of frequency bands. The signal delayed by the delay element is outputted to one of the two speakers and the input signal is directly outputted to the other one of the two speakers.
摘要翻译：音频再现装置再现来自布置在声场中的两个扬声器的单声道信号。单通道输入信号被延迟元件延迟。延迟元件对于多个频带执行具有不同延迟量的延迟。由延迟元件延迟的信号被输出到两个扬声器中的一个，并且输入信号被直接输出到两个扬声器中的另一个。

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