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。

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。

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。

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。

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。

公开(公告)号：US20130170648A1

公开(公告)日：2013-07-04

申请号：US13822855

申请日：2010-09-14

申请人： Akihiro Iseki ,  Yoshiki Ohta ,  Hiroyuki Ishihara ,  Yoshitomo Imanishi ,  Shinichi Kikuchi

发明人： Akihiro Iseki ,  Yoshiki Ohta ,  Hiroyuki Ishihara ,  Yoshitomo Imanishi ,  Shinichi Kikuchi

IPC分类号： H04R3/12

CPC分类号： H04R3/12 ,  H04S5/005 ,  H04S5/02 ,  H04S7/30

摘要： A surround signal generating device includes: a surround signal generating unit which subtracts a sound signal obtained by multiplying a first gain by an inputted sound signal of a right channel from an inputted sound signal of a left channel so as to generate a surround signal of the left channel, and which subtracts a sound signal obtained by multiplying a second gain by the inputted sound signal of the left channel from the inputted sound signal of the right channel so as to generate a surround signal of the right channel; and a gain setting unit which sets the first gain and the second gain so that a correlation between the surround signal of the left channel and the surround signal of the right channel which are generated by the surround signal generating unit realizes a correlation between surround signals of an actual content having a surround sound.

摘要翻译： 环绕信号发生装置包括：环绕信号生成单元，其从左通道的输入声音信号中减去通过将第一增益乘以右声道的输入声音信号而获得的声音信号，以产生 左声道，并且从所输入的右声道的声音信号中减去通过将左声道的输入声音信号乘以第二增益而获得的声音信号，以产生右声道的环绕信号; 以及增益设定单元，其设定第一增益和第二增益，使得由环绕信号生成单元生成的左声道的环绕信号与右声道的环绕信号之间的相关性实现了环绕信号的环绕信号之间的相关性 具有环绕声的实际内容。

公开(公告)号：US09503816B2

公开(公告)日：2016-11-22

申请号：US13822855

申请日：2010-09-14

申请人： Akihiro Iseki ,  Yoshiki Ohta ,  Hiroyuki Ishihara ,  Yoshitomo Imanishi ,  Shinichi Kikuchi

发明人： Akihiro Iseki ,  Yoshiki Ohta ,  Hiroyuki Ishihara ,  Yoshitomo Imanishi ,  Shinichi Kikuchi

IPC分类号： H04S5/02 ,  H04R3/12 ,  H04S7/00 ,  H04S5/00

CPC分类号： H04R3/12 ,  H04S5/005 ,  H04S5/02 ,  H04S7/30

摘要： A surround signal generating device includes: a surround signal generating unit which subtracts a sound signal obtained by multiplying a first gain by an inputted sound signal of a right channel from an inputted sound signal of a left channel so as to generate a surround signal of the left channel, and which subtracts a sound signal obtained by multiplying a second gain by the inputted sound signal of the left channel from the inputted sound signal of the right channel so as to generate a surround signal of the right channel; and a gain setting unit which sets the first gain and the second gain so that a correlation between the surround signal of the left channel and the surround signal of the right channel which are generated by the surround signal generating unit realizes a correlation between surround signals of an actual content having a surround sound.

摘要翻译： 环绕信号发生装置包括：环绕信号生成单元，其从左通道的输入声音信号中减去通过将第一增益乘以右声道的输入声音信号而获得的声音信号，以产生 左声道，并且从所输入的右声道的声音信号中减去通过将左声道的输入声音信号乘以第二增益而获得的声音信号，以产生右声道的环绕信号; 以及增益设定单元，其设定第一增益和第二增益，使得由环绕信号生成单元生成的左声道的环绕信号与右声道的环绕信号之间的相关性实现了环绕信号的环绕信号之间的相关性 具有环绕声的实际内容。

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。

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。

公开(公告)号：US20120033821A1

公开(公告)日：2012-02-09

申请号：US13264065

申请日：2009-04-15

申请人： Yoshiki Ohta ,  Yoshitomo Imanishi ,  Tomomi Hasegawa ,  Manabu Nohara ,  Yusuke Soga

发明人： Yoshiki Ohta ,  Yoshitomo Imanishi ,  Tomomi Hasegawa ,  Manabu Nohara ,  Yusuke Soga

IPC分类号： G10K11/16

CPC分类号： G10K11/1782 ,  G10K11/17854 ,  G10K11/17883 ,  G10K2210/1282 ,  G10K2210/503 ,  H04R2499/13 ,  H04S7/301

摘要： An active vibration noise control device having a pair of speakers, including: a basic signal generating unit generating a basic signal based on a vibration noise frequency; an adaptive notch filter generating a first control signal provided to one speaker using a first filter coefficient and generating a second control signal provided to the other speaker using a second filter coefficient to cancel the generated vibration noise; a microphone detecting cancellation error between the vibration noise and the control sounds and outputting an error signal; a reference signal generating unit generating a reference signal based on a transfer function from the speakers to the microphone; a filter coefficient updating unit updating first and second filter coefficients, minimize the error signal; and a phase difference limiting unit limiting a phase difference between control sounds generated by different speakers. Therefore, it becomes possible to appropriately ensure a uniform and wide noise-cancelled area.

摘要翻译： 一种具有一对扬声器的主动振动噪声控制装置，包括：基本信号产生单元，其基于振动噪声频率产生基本信号; 自适应陷波滤波器，使用第一滤波器系数产生提供给一个扬声器的第一控制信号，并使用第二滤波器系数产生提供给另一个扬声器的第二控制信号，以消除所产生的振动噪声; 麦克风检测振动噪声和控制声音之间的消除误差，并输出误差信号; 参考信号产生单元，基于从扬声器到麦克风的传递函数产生参考信号; 滤波器系数更新单元更新第一和第二滤波器系数，使误差信号最小化; 以及限制由不同扬声器产生的控制声音之间的相位差的相位差限制单元。 因此，可以适当地确保均匀且宽的噪声消除区域。