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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
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Akihiko Enamito , Osamu Nishimura , Tatsuhiko Goto
Abstract: 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
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Yongfang Li , Takahiro Omori , Takashi Usui , Osamu Nishimura , Kazuo Watabe
IPC: H01L41/04 , H01L41/047 , H03H21/00 , H03H9/02
Abstract: 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
Applicant: Kabushiki Kaisha Toshiba
Inventor： Keiichiro Someda , Kazuo Watabe , Osamu Nishimura , Michihiko Inukai
Abstract: 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
Applicant: Kabushiki Kaisha Toshiba
Inventor： Tatsuhiko Goto , Osamu Nishimura , Akihiko Enamito
IPC: G10K11/178
CPC classification number: G10K11/178 , G10K11/17813 , G10K11/17853 , G10K2210/1161 , G10K2210/3016 , G10K2210/3028
Abstract: 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
Applicant: Kabushiki Kaisha Toshiba
Inventor： Akihiko Enamito , Keiichiro Someda , Takahiro Hiruma , Osamu Nishimura
CPC classification number: H04S1/005 , H04S7/302 , H04S7/304 , H04S2400/11 , H04S2420/01
Abstract: 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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Patent Agency Ranking
公开(公告)号：US20150312695A1
公开(公告)日：2015-10-29
申请号：US14739380
申请日：2015-06-15
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Akihiko Enamito , Osamu Nishimura , Takahiro Hiruma
IPC: H04S7/00
CPC classification number: H04S7/302 , H04S1/002 , H04S2420/01
Abstract: 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.
Abstract translation: 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
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Tatsuhiko GOTO , Akihiko Enamito , Osamu Nishimura
CPC classification number: H04R5/033 , H04R1/2807 , H04S2420/07
Abstract: 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.
Abstract translation: 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：US12273691B2
公开(公告)日：2025-04-08
申请号：US18176213
申请日：2023-02-28
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Tatsuhiko Goto , Osamu Nishimura , Akihiko Enamito
Abstract: According to one embodiment, a noise reduction system includes a microphone, a loudspeaker, and processing circuitry. The processing circuitry switches an operating mode between a control mode and a path characteristic measurement mode, includes a control filter that generates a control signal that causes the loudspeaker to output a control sound for reducing noise, based on a detection signal obtained by detecting a first sound including the noise with the microphone, measures a path characteristic including an acoustic characteristic between the loudspeaker and the microphone, and generates the control filter by using a measurement result of the path characteristic and a noise feature signal including a feature of the noise.
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公开(公告)号：US10018597B2
公开(公告)日：2018-07-10
申请号：US15075621
申请日：2016-03-21
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Junko Hirokawa , Kazuo Watabe , Takahiro Omori , Takashi Usui , Osamu Nishimura , Akihiro Kasahara
CPC classification number: G01N29/14 , G01N29/07 , G01N29/36 , G01N2291/0234 , G01N2291/2698
Abstract: According to an embodiment, a detection system detects deterioration of a rope through at least one sheave. The system includes a plurality of sensors and a calculator. The sensors are configured to detect an elastic wave generated from the rope and convert the elastic wave into a detection signal. At least one of the sensors is installed near an end portion of the rope. At least one of the sensors is installed at the sheave. The calculator is configured to calculate a position of the rope where the elastic wave has been generated, based on a propagating speed of the elastic wave, time difference information of a plurality of detected times of the elastic waves detected by the respective sensors, and positional information indicating positions of the respective sensors.
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公开(公告)号：US09756447B2
公开(公告)日：2017-09-05
申请号：US14739380
申请日：2015-06-15
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Akihiko Enamito , Osamu Nishimura , Takahiro Hiruma
CPC classification number: H04S7/302 , H04S1/002 , H04S2420/01
Abstract: 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.
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