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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：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：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：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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公开(公告)号：US20120177238A1
公开(公告)日：2012-07-12
申请号：US13349940
申请日：2012-01-13
CPC分类号： H04R1/2819
摘要： According to one embodiment, an acoustic reproduction device includes a loudspeaker unit, a loudspeaker rear chamber unit, and a port unit. The loudspeaker unit generates a sound wave. The loudspeaker rear chamber unit includes a chamber portion in which the loudspeaker unit is arranged, and at least one of a duct portion and a branch portion. The duct portion and the branch portion each have a volume, a cross-sectional area, and a length different from those of the chamber portion. A port unit is connected to the loudspeaker rear chamber unit and has a port to externally output a rear wave. The duct portion guides the rear wave from the loudspeaker unit up to the port unit.
摘要翻译： 根据一个实施例，声学再现装置包括扬声器单元，扬声器后室单元和端口单元。 扬声器单元产生声波。 扬声器后室单元包括其中布置扬声器单元的腔室部分，以及管道部分和分支部分中的至少一个。 管道部分和分支部分各自具有与腔室部分不同的体积，横截面面积和长度。 端口单元连接到扬声器后室单元，并具有用于从外部输出后波的端口。 导管部分将扬声器单元的后波引导到端口单元。
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公开(公告)号：US09497562B2
公开(公告)日：2016-11-15
申请号：US13357634
申请日：2012-01-25
IPC分类号： H04R5/02 , H04R21/00 , G10K11/16 , H04B3/00 , H04R5/00 , H04S7/00 , H04S1/00 , H04R1/26 , H04R3/12
CPC分类号： H04S7/303 , H04R1/26 , H04R3/12 , H04R2499/15 , H04S1/002 , H04S7/301 , H04S7/305 , H04S7/307 , H04S2400/13 , H04S2420/07
摘要： According to one embodiment, a sound field control apparatus is provided with a control filter and a calculation unit. The filter executes an FIR computation for an acoustic signal using coefficients to output a main signal and control signals. The unit calculates the main coefficient and the coefficients based on Spatial transmission characteristics and a sound increase factor n, to set a composite sound pressure from a main speaker and control speakers to a first area to be n times of a coming sound pressure from only the main speaker, and to set a composite sound pressure from the main speaker and control speakers to a second area to be equal to the coming sound pressure from only the main speaker.
摘要翻译： 根据一个实施例，声场控制装置设置有控制滤波器和计算单元。 滤波器使用系数对声信号执行FIR计算，以输出主信号和控制信号。 该单元基于空间传输特性和声音增加因子n来计算主要系数和系数，以将来自主扬声器和控制扬声器的复合声压设置为仅来自第一区域的即将到来声压的n倍的第一区域 主扬声器，并且将来自主扬声器和控制扬声器的复合声压设置为仅与主扬声器的即将到来的声压相等的第二区域。
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公开(公告)号：US20120033530A1
公开(公告)日：2012-02-09
申请号：US13071550
申请日：2011-03-25
申请人： Akihiko Enamito , Osamu Nishimura
发明人： Akihiko Enamito , Osamu Nishimura
IPC分类号： G01S15/06
摘要： According to one embodiment, a sound image localization apparatus includes following units. The first signal generating unit is configured to generate a first acoustic signal. The first speaker is configured to generate a first sound according to the first acoustic signal. The input unit is configured to input a localization magnification n. The first control filter unit is configured to adjust the first acoustic signal with a first control filter G1 calculated based on the input localization magnification n to generate a first adjusted acoustic signal. The second control filter unit is configured to adjust the first acoustic signal with a second control filter G2 calculated based on the input localization magnification n to generate a second adjusted acoustic signal. The second and third speakers are configured to generate second and third sounds according to the first and second adjusted acoustic signals, respectively.
摘要翻译： 根据一个实施例，声像定位装置包括以下单元。 第一信号产生单元被配置为产生第一声信号。 第一扬声器被配置为根据第一声信号产生第一声音。 输入单元被配置为输入定位倍率n。 第一控制滤波器单元被配置为使用基于输入定位倍率n计算的第一控制滤波器G1来调整第一声信号，以产生第一调节声信号。 第二控制滤波器单元被配置为使用基于输入定位倍率n计算的第二控制滤波器G2来调整第一声信号，以产生第二调节声信号。 第二和第三扬声器被配置为分别根据第一和第二调节声信号产生第二和第三声音。
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公开(公告)号：US08973446B2
公开(公告)日：2015-03-10
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
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.
摘要翻译： 根据一个实施例，压力传感器包括基座和第一传感器单元。 第一传感器单元包括第一换能器薄膜，第一应变感测装置和第二应变感测装置。 第一应变感测装置包括第一磁性层，第二磁性层和设置在第一和第二磁性层之间的第一中间层。 第二应变感测装置与第一膜表面上的第一应变感测装置分开设置，并且设置在与重心的位置不同的位置处，第二应变感测装置包括第三磁性层，第四磁性层和 第二中间层设置在第三和第四磁性层之间，第一和第二中间层是非磁性的。 第一和第二应变感测装置和重心处于直线。
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公开(公告)号：US08611186B2
公开(公告)日：2013-12-17
申请号：US13071550
申请日：2011-03-25
申请人： Akihiko Enamito , Osamu Nishimura
发明人： Akihiko Enamito , Osamu Nishimura
摘要： According to one embodiment, a sound image localization apparatus includes following units. The first signal generating unit is configured to generate a first acoustic signal. The first speaker is configured to generate a first sound according to the first acoustic signal. The input unit is configured to input a localization magnification n. The first control filter unit is configured to adjust the first acoustic signal with a first control filter G1 calculated based on the input localization magnification n to generate a first adjusted acoustic signal. The second control filter unit is configured to adjust the first acoustic signal with a second control filter G2 calculated based on the input localization magnification n to generate a second adjusted acoustic signal. The second and third speakers are configured to generate second and third sounds according to the first and second adjusted acoustic signals, respectively.
摘要翻译： 根据一个实施例，声像定位装置包括以下单元。 第一信号产生单元被配置为产生第一声信号。 第一扬声器被配置为根据第一声信号产生第一声音。 输入单元被配置为输入定位倍率n。 第一控制滤波器单元被配置为使用基于输入定位倍率n计算的第一控制滤波器G1来调整第一声信号，以产生第一调节声信号。 第二控制滤波器单元被配置为利用基于输入定位倍率n计算的第二控制滤波器G2来调整第一声信号，以产生第二调节声信号。 第二和第三扬声器被配置为分别根据第一和第二调节声信号产生第二和第三声音。
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