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公开(公告)号：US20050084115A1
公开(公告)日：2005-04-21
申请号：US10972320
申请日：2004-10-26
IPC分类号： A61F11/06 , G10K11/16 , G10K11/178 , H03B29/00
CPC分类号： G10K11/178 , G10K2210/12822
摘要： A three-dimension active silencer includes a measuring unit for detecting a signal relating to a sound radiated from a target sound source which is located in a closed box. A plurality of additional sound sources are arranged around the target sound source. A microphone is arranged at a predetermined position for detecting a sound power at the position. A controller is adapted to control respective amplitudes of the additional sound sources which can be different from an amplitude of the target sound source and respective phases of the additional sound sources, based on the signal detected by the measuring unit, in such a manner that the microphone detects the lowest sound power. The additional sound sources are arranged in such a manner that a position xp of the target sound source, respective relative positions di (i=1, 2, . . . , N) of the N additional sound sources from the target sound source and a wave number k of the sound radiated from the target sound source can substantially satisfy the following expression. 1 N ∑ i = 1 N cos k ( x p - d i ) - cos k · x p ≅ 0 According to the feature, it can be achieved to reduce the total sound power in the closed box including the target sound source.
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公开(公告)号：US06901147B1
公开(公告)日：2005-05-31
申请号：US09604904
申请日：2000-06-28
IPC分类号： A61F11/06 , G10K11/16 , G10K11/178 , H03B29/00
CPC分类号： G10K11/178 , G10K2210/12822
摘要： A three-dimension active silencer includes a measuring unit for detecting a signal relating to a sound radiated from a target sound source which is located in a closed box. A plurality of additional sound sources are arranged around the target sound source. A microphone is arranged at a predetermined position for detecting a sound power at the position. A controller is adapted to control respective amplitudes of the additional sound sources which can be different from an amplitude of the target sound source and respective phases of the additional sound sources, based on the signal detected by the measuring unit, in such a manner that the microphone detects the lowest sound power. The additional sound sources are arranged in such a manner that a position xp of the target sound source, respective relative positions di (i=1, 2, . . . , N) of the N additional sound sources from the target sound source and a wave number k of the sound radiated from the target sound source can substantially satisfy the following expression. 1 N ∑ i = 1 N cos k ( x p - d i ) - cos k · x p ≅ 0 According to the feature, it can be achieved to reduce the total sound power in the closed box including the target sound source.
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公开(公告)号：US07352870B2
公开(公告)日：2008-04-01
申请号：US10400564
申请日：2003-03-28
CPC分类号： G10K11/178 , G10K2210/118 , G10K2210/124 , G10K2210/128 , G10K2210/3214 , G10K2210/3224
摘要： An active sound muffler for reducing a sound to be reduced as emitted from a sound source located at one of the opposite sides of a sound insulating wall and diffracted and transmitted to the other side, the muffler comprises a control loudspeaker arranged at the front end or the other side of the sound insulating wall and adapted to output a control sound with a predetermined amplitude and a predetermined phase, a control microphone arranged above the sound insulating wall and adapted to gauge the sound pressure or the acoustic intensity of the sound to be reduced and that of the control sound and a control circuit for controlling the output of the control loudspeaker so as to minimize the sound pressure or the acoustic intensity, whichever appropriate, based on the outcome of gauging of the control microphone, and the control loudspeaker showing a line sound source characteristic.
摘要翻译： 一种主动声音消音器，用于减少从位于隔音壁的相对侧中的一个声音处发射并被衍射并传播到另一侧的声源被减小的声音消音器，消声器包括设置在前端的控制扬声器或 隔音墙的另一侧，适于输出具有预定振幅和预定相位的控制声音，控制麦克风布置在隔音墙上方，适用于测量声音的声压或声强度。 以及用于控制控制扬声器的输出的控制电路的控制电路，以便基于控制麦克风的测量结果，以最小化声压或声强度（以适当的方式），并且控制扬声器显示为 线声源特征。
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公开(公告)号：US06192133B1
公开(公告)日：2001-02-20
申请号：US08932176
申请日：1997-09-17
申请人： Akihiko Enamito , Takuro Hayashi
发明人： Akihiko Enamito , Takuro Hayashi
IPC分类号： A61F1106
CPC分类号： G10K11/178 , A61F2011/145
摘要： A speaker, serving as an additional sound source, is provided close to a noise source, two microphones are arranged on a central axis of a vibration surface of the speaker to be spaced from each other, acoustic intensity of the speaker is measured from outputs of these microphones, and an input to the speaker is controlled by a controller such that acoustic intensity, that is, acoustic power of the speaker is set to be zero or minimized.
摘要翻译： 作为附加声源的扬声器靠近噪声源提供，在扬声器的振动表面的中心轴上布置两个麦克风以彼此间隔开，扬声器的声强度从 这些麦克风和扬声器的输入由控制器控制，使得扬声器的声学强度，即声音功率被设置为零或最小化。
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公开(公告)号：US09088854B2
公开(公告)日：2015-07-21
申请号：US13428055
申请日：2012-03-23
CPC分类号： H04S7/302 , H04S1/002 , H04S2420/01
摘要： According to an embodiment, a control filter coefficient is calculated in such a manner that a second spatial average of one or more complex sound pressure ratios at one or more target binaural positions when a first loudspeaker and a second loudspeaker emit a second acoustic signal and a first acoustic signal is approximated to a first spatial average of one or more complex sound pressure ratios at the one or more target binaural positions when a target virtual acoustic source emits the first acoustic signal.
摘要翻译： 根据一个实施例，控制滤波器系数被计算为当第一扬声器和第二扬声器发射第二声信号时在一个或多个目标双耳位置处的一个或多个复合声压比的第二空间平均值， 当目标虚拟声源发射第一声信号时，第一声信号近似于一个或多个目标双耳位置处的一个或多个复合声压比的第一空间平均值。
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公开(公告)号：US20090085283A1
公开(公告)日：2009-04-02
申请号：US12233740
申请日：2008-09-19
IPC分类号： B65H5/06
CPC分类号： B65H5/062 , B65H2402/40 , B65H2601/521
摘要： In a sheet conveying mechanism, a first bulging space and a second bulging space are provided on a downstream side and an upstream side, respectively, of a conveying path. The second bulging space has a length L1 along the conveying path. The conveying path between the first and second bunging spaces is defined to have a length L2. The lengths L1 and L2 are set to satisfy a predetermined relationship with a frequency of noise propagating through the conveying path. The sheet conveying mechanism can inexpensively reduce noise generated inside the conveying path during sheet conveyance without hindering the conveyance of the sheet.
摘要翻译： 在片材输送机构中，分别在输送路径的下游侧和上游侧设置有第一膨胀空间和第二膨胀空间。 第二凸起空间沿输送路径具有长度L1。 第一和第二捣实空间之间的输送路径被定义为具有长度L2。 长度L1和L2被设定为与通过输送路径传播的噪声的频率成一定的关系。 片材输送机构能够在片材输送期间廉价地减少输送路径内产生的噪音，而不会妨碍纸张的输送。
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公开(公告)号：US20070098183A1
公开(公告)日：2007-05-03
申请号：US11586236
申请日：2006-10-25
申请人： Akihiko Enamito , Takahiro Hiruma
发明人： Akihiko Enamito , Takahiro Hiruma
CPC分类号： H04S3/002
摘要： A reproduction apparatus includes an acoustic signal generator which generates an acoustic signal, first sound pressure detection points located at N points in an audible area to detect sound pressure signals, N+1 control sound wave generators each of which emits a sound wave based on the acoustic signal to generate a control sound, second sound pressure detection points located at M points in a non-audible area to detect sound pressure signals, M sound wave generators each of which emits a sound wave based on the acoustic signal to generate a main sound, and a controller to control an amplitude and a phase of each of the (N+1) control sound wave generators.
摘要翻译： 再现装置包括产生声信号的声信号发生器，位于可听区域N点的第一声压检测点，以检测声压信号，N + 1个控制声波发生器，每个发声基于 声信号以产生控制声音，第二声压检测点位于非听觉区域中的M个点处以检测声压信号，M个声波发生器，每个声波发生器基于声信号发出声波以产生主声音 ，以及控制器，用于控制（N + 1）个控制声波发生器中的每一个的振幅和相位。
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8.发明申请Apparatus, method, and computer program product for reproducing sound by dividing sound field into non-reduction region and reduction region 审中-公开用于通过将声场分割为非还原区域和缩小区域来再现声音的装置，方法和计算机程序产品公开(公告)号：US20060215853A1
公开(公告)日：2006-09-28
申请号：US11363429
申请日：2006-02-27
申请人： Takahiro Hiruma , Akihiko Enamito , Takahiro Suzuki , Rika Hosaka , Takumi Hara
发明人： Takahiro Hiruma , Akihiko Enamito , Takahiro Suzuki , Rika Hosaka , Takumi Hara
CPC分类号： H04S7/30
摘要： A sound reproducing apparatus includes an amplitude and phase adjusting unit that adjusts amplitude and phase of a sound signal which is supplied as an input, and outputs an adjusted sound signal; a first sound source that outputs a first sound based on the sound signal; and a second sound source that outputs a second sound based on the adjusted sound signal, and that has a different distance decay rate from the first sound source, the distance decay rate representing a ratio of attenuation of sound pressure of sound output from a sound source to a distance from the sound source; wherein the amplitude and phase adjusting unit adjusts the amplitude and the phase of the sound signal, so as to restrain a synthesis sound pressure that is a combination of a sound pressure of the first sound which is calculated based on the distance decay rate of the first sound source, and a sound pressure of the second sound which is calculated based on the distance decay rate of the second sound source, at a predetermined distance from the first sound source.
摘要翻译： 一种声音再现装置，包括调整作为输入的声音信号的振幅和相位的振幅相位调整部，输出调整后的声音信号; 基于声音信号输出第一声音的第一声源; 以及第二声源，其基于所述调整后的声音信号输出第二声音，并且与所述第一声源具有不同的距离衰减速率，所述距离衰减率表示从声源输出的声音的声压的衰减比 距离声源一段距离; 其中，所述振幅和相位调整单元调整所述声音信号的幅度和相位，以便抑制作为所述第一声音的声压的组合的合成声压，所述合成声压是基于所述第一声音的距离衰减率 声源，以及基于第二声源的距离衰减率计算的第二声音的声压，距离第一声源预定距离。
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公开(公告)号：US20050096915A1
公开(公告)日：2005-05-05
申请号：US10950398
申请日：2004-09-28
申请人： Takahiro Suzuki , Akihiko Enamito , Rika Hosaka , Takumi Hara
发明人： Takahiro Suzuki , Akihiko Enamito , Rika Hosaka , Takumi Hara
IPC分类号： H04R3/12 , G10K11/178 , G11B5/09 , H04S7/00
CPC分类号： H04H60/04
摘要： A contents reproducing system includes a unit which acquires contents data, a specifying unit which specifies a space transfer function that reflects a state of a space in which sound data contained in the contents data is reproduced, a generating unit which generates control sound data based on the sound data contained in the contents data and the specified space transfer function, and an output unit which outputs the sound data and the control sound data to speakers which are different from each other, respectively.
摘要翻译： 内容再现系统包括获取内容数据的单元，指定反映重放内容数据中包含的声音数据的空间的状态的空间传递函数的指定单元，基于该内容数据生成控制声音数据的生成单元 包含在内容数据中的声音数据和指定的空间传递函数，以及输出单元，其将声音数据和控制声音数据分别输出到彼此不同的扬声器。
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公开(公告)号：US20130255393A1
公开(公告)日：2013-10-03
申请号：US13730016
申请日：2012-12-28
申请人： Hideaki Fukuzawa , Akihiko Enamito , Osamu Nishimura , Michiko Hara , Hiromi Yuasa , Yoshihiko Fuji , Masayuki Kii , Eizo Fujisawa
发明人： Hideaki Fukuzawa , Akihiko Enamito , Osamu Nishimura , Michiko Hara , Hiromi Yuasa , Yoshihiko Fuji , Masayuki Kii , Eizo Fujisawa
IPC分类号： G01L1/12
摘要： According to one embodiment, a pressure sensor includes a base, and a first sensor unit. The first sensor unit includes a first transducer thin film, a first strain sensing device and a second strain sensing device. The first strain sensing device includes a first magnetic layer, a second magnetic layer, and a first intermediate layer provided between the first and the second magnetic layers. The second strain sensing device is provided apart from the first strain sensing device on the first membrane surface and provided at a location different from a location of the barycenter, the second strain sensing device including a third magnetic layer, a fourth magnetic layer, and a second intermediate layer provided between the third and the fourth magnetic layers, the first and the second intermediate layers being nonmagnetic. The first and the second strain sensing devices, and the barycenter are in a straight line.
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