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公开(公告)号：US11570545B2
公开(公告)日：2023-01-31
申请号：US17463436
申请日：2021-08-31
发明人： Akihiko Enamito , Osamu Nishimura , Tatsuhiko Goto
摘要： An acoustic inspection apparatus includes a vibration sound source, a microphone group, and a processor. The vibration sound source emits a vibration sound to an inspection target object. The microphone group includes a first microphone arranged near the inspection target object and a second microphone arranged to have an interval with respect to the first microphone. The processor calculates a first impulse response between the first and second microphones, denoises a component corresponding to the vibration sound from the first impulse response, converts, into a frequency characteristic, a second impulse response obtained from the first impulse response, calculates acoustic energy between the first and second microphones based on the frequency characteristic, and determines an abnormal state of the inspection target object based on the acoustic energy.
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公开(公告)号：US11417824B2
公开(公告)日：2022-08-16
申请号：US16556277
申请日：2019-08-30
发明人： Yongfang Li , Takahiro Omori , Takashi Usui , Osamu Nishimura , Kazuo Watabe
IPC分类号： H01L41/04 , H01L41/047 , H03H21/00 , H03H9/02
摘要： According to one embodiment, a sensor module includes at least one sensor and at least one switch. The sensor includes a first piezoelectric element. The first piezoelectric element includes a first electrode. The first piezoelectric element is set with a resonance frequency to resonate at a vibration frequency of a detection target. The switch includes a second piezoelectric element. The second piezoelectric element includes a second electrode connected to the first electrode and a third electrode electrically separated from the second electrode.
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公开(公告)号：US10578587B2
公开(公告)日：2020-03-03
申请号：US15691178
申请日：2017-08-30
摘要： According to one embodiment, a method is used for diagnosing a deterioration of a utility pole having at least one bolt and a plurality of holes provided for attaching the bolt. In the method, an impact is applied to the bolt. Elastic waves generated due to the impact are detected by a sensor shaped like a bolt. The sensor is attached to at least one of the holes. A propagation situation of the elastic waves in the utility pole is derived, based on the elastic waves detected, and each position of the bolt and the sensor.
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公开(公告)号：US09747885B2
公开(公告)日：2017-08-29
申请号：US15066112
申请日：2016-03-10
发明人： Tatsuhiko Goto , Osamu Nishimura , Akihiko Enamito
IPC分类号： G10K11/178
CPC分类号： G10K11/178 , G10K11/17813 , G10K11/17853 , G10K2210/1161 , G10K2210/3016 , G10K2210/3028
摘要： According to one embodiment, a noise reduction system for reducing noise including impact noise repetitively generated at a time interval includes the following elements. The error signal generator generates an error signal based on the noise being detected. The delay signal generator has a time delay characteristic and delays a signal, which is generated based on the error signal, to generate a delay signal, the time delay characteristic being determined based on an imaging sequence or pre-scanning by the MRI device and corresponding to the time interval. The control filter generates the first control signal from the delay signal. The loudspeaker unit includes at least one pair of a first filter and a control loudspeaker and a transmission unit.
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公开(公告)号：US09628931B2
公开(公告)日：2017-04-18
申请号：US14658510
申请日：2015-03-16
CPC分类号： H04S1/005 , H04S7/302 , H04S7/304 , H04S2400/11 , H04S2420/01
摘要： According to one embodiment, an acoustic control apparatus includes an acquisition unit, a detection unit, a correction unit, and an output unit. The acquisition unit acquires a first acoustic signal. The detection unit detects an information sound. When the detection unit detects the information sound, the correction unit corrects the first acoustic signal to a second acoustic signal by convoluting the first acoustic signal with a first function. The first function represents an acoustic transfer characteristic from a virtual position to a listening position. The virtual position is located along a first direction from the listening position. The output unit outputs the second acoustic signal.
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公开(公告)号：US20150312695A1
公开(公告)日：2015-10-29
申请号：US14739380
申请日：2015-06-15
IPC分类号： H04S7/00
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：US20150271603A1
公开(公告)日：2015-09-24
申请号：US14644949
申请日：2015-03-11
发明人： Tatsuhiko GOTO , Akihiko Enamito , Osamu Nishimura
CPC分类号： H04R5/033 , H04R1/2807 , H04S2420/07
摘要： According to an embodiment, a speaker system includes filters, speakers, and a sound collection unit. Each of the filters filters a first signal to generate a second signal. The speakers are arranged so that transfer characteristics from the speakers to an evaluation point are different from each other. Each of the speakers converts the second signal generated by a corresponding one of the filters into a sound wave. The sound collection unit combines sound waves output from the speakers to generate a combined sound wave. The filters are formed so that a transfer characteristic from the first signal to an output signal matches a target transfer characteristic, the output signal indicating a sound pressure of the combined sound wave at the evaluation point.
摘要翻译： 根据实施例，扬声器系统包括滤波器，扬声器和声音收集单元。 每个滤波器对第一信号进行滤波以产生第二信号。 扬声器被布置成使得从扬声器到评估点的传送特性彼此不同。 每个扬声器将由相应的一个滤波器产生的第二信号转换成声波。 声音收集单元组合从扬声器输出的声波以产生组合的声波。 滤波器被形成为使得从第一信号到输出信号的传递特性与目标传输特性匹配，该输出信号表示评估点处的组合声波的声压。
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公开(公告)号：US12125493B2
公开(公告)日：2024-10-22
申请号：US17652592
申请日：2022-02-25
IPC分类号： G10L21/0208 , G10L25/84 , H04R5/04 , H04S7/00
CPC分类号： G10L21/0208 , G10L25/84 , H04R5/04 , H04S7/302 , G10L2021/02087 , H04S2420/01
摘要： An online conversation management apparatus includes a processor. The processor acquires, across a network, reproduction environment information from at least one terminal that reproduces a sound image via a reproduction device. The reproduction environment information is information of a sound reproduction environment of the reproduction device. The processor acquires azimuth information. The azimuth information is information of a localization direction of the sound image with respect to a user of the terminal. The processor performs control for reproducing a sound image of each terminal based on the reproduction environment information and the azimuth information.
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公开(公告)号：US11959883B2
公开(公告)日：2024-04-16
申请号：US17821946
申请日：2022-08-24
发明人： Tatsuhiko Goto , Akihiko Enamito , Osamu Nishimura
CPC分类号： G01N29/11 , G01N29/045 , G01N29/4445 , G01N2291/015 , G01N2291/0258 , G01N2291/105
摘要： According to an embodiment, a diagnostic apparatus includes a sound-emitting unit, at least one measurement unit, and a processor. The sound-emitting unit includes a plurality of speakers arranged at equal angular intervals on a circumference of a circle, and is configured to emit a first vibration sound to a target by using the speakers. The at least one measurement unit is arranged on a central axis of the circle, and is configured to measure a vibration of the target generated in response to the first vibration sound, or a second vibration sound radiated from the target due to the vibration. The processor is configured to diagnose the target based on an output from the at least one measurement unit.
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公开(公告)号：US20200292505A1
公开(公告)日：2020-09-17
申请号：US16556286
申请日：2019-08-30
发明人： Yongfang Li , Takahiro Omori , Takashi Usui , Osamu Nishimura , Kazuo Watabe
IPC分类号： G01N29/42 , G01M13/028 , G01H11/08 , G01N29/12
摘要： According to one embodiment, a sensor module includes a sensor and a diagnosis circuit. The sensor includes piezoelectric transducers and switches. The piezoelectric transducers have different resonance frequencies. The switches are provided to correspond to the piezoelectric transducers, respectively. Each of the switches outputs an output signal corresponding to a voltage generated by an inverse piezoelectric effect of a corresponding piezoelectric transducer of the piezoelectric transducers. The diagnosis circuit diagnoses, based on a difference in pattern of the output signal, whether vibration has newly occurred in the sensor, and switch an output destination of the output signal of the sensor according to a result of the diagnosis.
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