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.

Abstract: A diagnostic apparatus includes an excitation unit, a first sound reception unit, a second sound reception unit, and a processor. The processor designates a plurality of various volumes for the excitation unit. The processor calculates a first reference impulse response, a second reference impulse response, a first evaluation impulse response, and a second evaluation impulse response. The processor calculates a correlation transfer function. The processor calculates a difference between a first evaluation characteristic and a first reference characteristic. The processor diagnoses a measurement object based on the difference and a characteristic that a volume of a vibration radiation sound shifts from a dead zone to a rise region to a linear region to a saturation zone in this order as a volume of the excitation sound changes.

Abstract: To allow an electronic control unit to be replaced with good work efficiency and prevent foreign matter from entering a casing during maintenance work, the connector connection structure includes an internal connector positioned inside a casing, an external connector positioned outside the casing and an electronic control unit electrically connected between the external connector and the electronic control unit wherein the electronic control unit includes a main part that opposes an opening formed in the casing when the internal connector is connected thereto, and a first conductive connection portion and a second conductive connection portion provided on either end of the main part and configured to be connected to the internal connector and the external connector respectively, and a first seal member is provided on an outer periphery of the main part, the first seal member closing the opening when the external connector is not connected to the electronic control unit and the internal connector is connected

Abstract: To prevent electric conductance impairment of an electric connecting part between an electronic control unit and an internal connector in a reliable manner even when the electric connecting part between the electronic control unit and the internal connector is placed in an environment where oil mist or electroconductive substances are present, the electronic control unit includes a main part, a first conductive connection portion provided at a lower end of the main part and configured to be electrically connected to the internal connector, and an outer shell member extending downward so as to surround the first conductive connection portion, and to be open only at a lower end thereof, and wherein the internal connector is provided with a housing including a part defining an annular recess opened upward on an outer periphery thereof, the lower end of the outer shell member being received in the annular recess when the electronic control unit is connected to the internal connector.

Abstract: A sound inspection apparatus that includes at least three microphones, a removing unit, and an estimation unit. The removing unit calculates an impulse response based on a sound pressure of a radiation sound collected via a reference microphone and a first microphone, calculates an impulse response based on the sound pressure of the radiation sound collected via the reference microphone and a second microphone, and removes a component corresponding to the vibration sound from the calculated impulse response. The intensity calculation unit calculates an intensity of the radiation sound based on the impulse response from which the vibration sound is removed, and the estimation unit estimates, based on the calculated intensity, a site where an abnormality in the inspection target object has occurred.

Abstract: 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.

Abstract: According to one embodiment, a sound absorption apparatus includes a front plate, a back plate, a diaphragm, a supporting member, a second frame, and a third frame. The front plate has a sound hole. The back plate faces the front plate. The diaphragm is provided between the front plate and the back plate. The supporting member supports the diaphragm. The supporting member includes a first frame attached to the diaphragm, a first member located inside the first frame and attached to the diaphragm, and a connecting member connecting the first frame and the first member. The second frame forms a first space between the front plate and the diaphragm. The third frame forms a second space between the back plate and the diaphragm.

Abstract: An information processing apparatus includes a memory storing instructions, and one or more processors configured to execute the instructions to acquire at least one of information indicating a payment method used by a customer who intends to use a payment device and information indicating a registration method of a product of the customer as customer information, acquire a status of a payment device including at least one of information indicating a payment method available in the payment device and information indicating a registration method of a product available in the payment device and an operation status of the payment device, and output guidance information indicating a payment device conforming to the customer information based on the customer information and the status.

Abstract: An information processing apparatus includes a memory storing instructions, and storing store data including the number of unpaid customers who are unpaid in a store, the number of operating payment devices, and the number of waiting customers who are waiting for payment in a payment devices, at each of a plurality of time points, and one or more processors configured to execute the instructions to acquire the number of currently operating payment devices, calculate the number of currently unpaid customers based on the sensor data of the store, specify past store data in which the number of unpaid customers and the number of operating payment devices similar to the number of currently unpaid customers and the number of currently operating payment devices are associated with each other, and determine the number of required payment devices based on the specified store data.

Abstract: A connection structure for a connector to be connected to a connection part of a circuit board supported by a holder, wherein the connection part and the connector are detachably joined, and the holder is provided with: a circuit board restricting part configured to engage with the circuit board electrically connected to the connector to restrict movement of the circuit board in a direction separating from the connector; and a connector restricting part configured to engage with the connector electrically connected to the circuit board to restrict movement of the connector in a direction separating from the circuit board.

Abstract: It is an object to provide a trimmer that can trim a fore-edge portion of a bound material except a cover and that can be excellent in productivity and cost. A cover has flap portions adjacent to the fore-edge portion of the bound material, a trimmer includes: a trim cutter that trims the bound material; a blade receiving portion that receives an edge of the trim cutter; a base portion and a pressure portion that nip and position the bound material; and a pair of guide portions arranged for movement in a direction close to or away from the bound material, wherein the guide portions are inserted between the book block and the cover so as to peel the cover together with the flap portions up when the fore-edge portion of the bound material is trimmed by the trim cutter.

Abstract: 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.

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.

Abstract: According to one embodiment, a sound absorption device includes: a first plate having a plurality of first holes; a second plate facing the first plate in a first direction; a first frame connecting the first plate and the second plate; and a third plate supported by the first frame so as to vibrate in the first direction within the first frame. A first space is formed in the first frame between the first plate and the third plate. A second space is formed in the first frame between the second plate and the third plate. The third plate includes a first portion and a second portion, the second portion having a higher vibration speed than the first portion.

Abstract: A connector includes a housing having an elastic locking piece and a terminal hole defining a terminal receptacle compartment extending in an insertion direction; and a terminal member to be inserted into the terminal receptacle compartment from rear to front along the insertion direction, wherein the terminal member has a first opening configured to be engaged with the locking piece when the connector is assembled, and a second opening defined on the front side of the first opening, and wherein a projection is formed on the terminal member and prevents the locking piece from being engaged with the second opening when the terminal member is inserted or removed, which prevents a user from wrongly perceiving that the insertion of the terminal member is completed despite not having achieved engagement between the locking piece and the first opening.

Abstract: A connector includes a housing defining a terminal holding chamber extending in a prescribed direction, a terminal member inserted to the terminal holding chamber along a prescribed insertion direction, and a retainer attached to the housing by being inserted to the housing along a direction perpendicular to the insertion direction so as to engage with a locking portion of the terminal member and thereby prevent the terminal member from coming off, wherein the terminal member is a bent article made of a plate material including a protruding portion having a top portion on one side in the direction along which the retainer is inserted to the housing, and the protruding portion has an end surface facing in the insertion direction of the terminal member and constituting the locking portion.

Abstract: In general, according to one embodiment, a sound inspection apparatus includes: at least three microphones, a removing unit, and an estimation unit; the removing unit calculates an impulse response based on a sound pressure of a radiation sound collected via reference microphone and a first microphone, calculate an impulse response based on the sound pressure of the radiation sound collected via the reference microphone and a second microphone, and remove a component corresponding to the vibration sound from the calculated impulse response; the intensity calculation unit calculates an intensity of the radiation sound based on the impulse response from which the vibration sound is removed; the estimation unit estimates, based on the calculated intensity, a site where an abnormality in the inspection target object has occurred.

Abstract: 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.

Abstract: According to one embodiment, an acoustic diagnostic apparatus includes a speaker, a sound receiving unit, a positioning mechanism, first through third calculation units, and an evaluation unit. The speaker emits a sound wave to a diagnosis target. The sound receiving unit includes two microphones to receive a sound wave from the target. The positioning mechanism positions the sound receiving unit. The first calculation unit calculates impulse responses of the microphones. The second calculation unit calculates, based on the impulse responses, an intensity value on a measurement axis passing through the microphones. The third calculation unit calculates a sound absorption coefficient from the intensity value. The evaluation unit diagnoses the target by evaluating an acoustic characteristic based on a change in the sound absorption coefficient.

Abstract: According to one embodiment, an inspection apparatus includes a vibration sensor, a microphone, and a processor. The vibration sensor detects a vibration of an inspection target object to which the vibration is excited. The microphone arranged near the inspection target object and collects a radiated sound from the inspection target object. The processor calculates an impulse response between the vibration sensor and the microphone. The processor denoises an unnecessary component from the impulse response. The processor converts the impulse response into a frequency characteristic. The processor calculates acoustic energy between the vibration sensor and the microphone based on the frequency characteristic. The processor determine the presence/absence of an abnormal state of the inspection target object.