摘要:
According to one embodiment, a sound corrector includes a signal outputter, a response signal, a frequency specifier, a coefficient specifier, a filter, and an outputter. The signal outputter outputs a measurement signal to measure acoustical properties of an object to be measured. The response signal receiver receives a response signal from the object in response to the measurement signal. The frequency specifier specifies a resonant frequency at a resonance peak from the response signal. The coefficient specifier specifies a correction coefficient of a correction filter for reducing the resonant frequency based on the specified resonant frequency. The filter performs filtering on a signal to be output to the object using the correction filter with the correction coefficient. The outputter outputs the signal having undergone the filtering to the object.
摘要:
According to one embodiment, an acoustic apparatus comprises an electro-acoustic transducer with a first function of converting an electric signal to an acoustic signal and a second function of converting an acoustic signal to an electric signal, the electro-acoustic transducer configured to convert a measuring electric signal to a measuring acoustic signal using the first function, and to convert an acoustic response signal responding to the measuring acoustic signal from an object to an electric response signal using the second function, a switch configured to switch the first function to the second function, or vice versa, and a switch controller configured to control a function switching of the switch in accordance with a sound source signal.
摘要:
According to one embodiment, an acoustic apparatus comprises a measuring signal generator, a transducer configured to convert a measuring signal to a measuring sound and to convert a characteristic vibration of the transducer due to the measuring sound, to a characteristic vibration signal, an analysis module configured to analyze the characteristic vibration signal in order to output a physical quality of a characteristic vibration of the transducer, a controller configured to set a first state in which the transducer converts an electric signal to an acoustic signal or a second state in which the transducer converts an acoustic signal to an electric signal. The measuring signal generator is connected to the transducer in the first state and the analysis module is connected to the transducer in the second state.
摘要:
According to one embodiment, an acoustic correction apparatus includes: a signal obtaining module configured to obtain an acoustic signal from a target space including an object and an external space; a signal output module configured to output to the target space a measurement signal; a coefficient identifying module configured to identify, on the basis of a response acoustic signal, a correction coefficient of a correction filter that reduces a resonance frequency component of a resonance in the object; a filtering module configured to use the correction filter, and filter the signal provided to the object; a noise cancelling module configured to remove, on the basis of the acoustic signal, a noise component comprised in the acoustic signal from the filtered signal; and an output module configured to output the acoustic signal, from which the noise component is removed by the noise cancelling module, to the object.
摘要:
According to one embodiment, A microphone-earphone includes a speaker connected to an acoustic device configured to measure acoustic characteristics of a listener's external auditory canal, and configured to output an acoustic signal toward the listener's external auditory canal, a microphone device disposed outside the listener's external auditory canal, an acoustic tube including one end connected to the microphone device and the other end opening to the listener's external auditory canal, and a housing including an opening portion which accommodates the speaker and is so disposed as to guide sound, which is output from the speaker, to the listener's external auditory canal. An inside diameter of the acoustic tube is less than a diameter of the opening portion.
摘要:
According to one embodiment, a signal processing apparatus, includes: an output module configured to output a sound source signal to an external environment; a receiver configured to receive a response signal responding to the sound source signal output by the output module; an extracting module configured to extract a noise component signal from the response signal received by the receiver using an inverse filtering process of a frequency characteristic, the frequency characteristic being set in advance by dividing a measurement response signal responding to a measurement sound source signal used to measure the external environment from the measurement source signal, the measurement source signal being one of the sound source signal output by the output module; and a removing module configured to remove the noise component signal from the sound source signal output by the output module after the extraction of the noise component signal.
摘要:
A fuel cell system (1) which includes: a fuel cell (2) to be supplied with a gas for power generation, the gas unused for the power generation to be discharged out of the fuel cell (2); a circulation flow path (8) through which the discharged gas is resupplied to the fuel cell (2); a variable flow rate circulation pump (6) for circulating the gas through the circulation flow path (8); a valve (7) for discharging the gas in the circulation flow path (8) to the outside thereof; a voltage sensor (22) for measuring voltage of the fuel cell (2); and a controller (32) for controlling the circulation pump (6) and the valve (7). The circulation pump (6) and the valve (7) are controlled based on the voltage (CV) measured by the voltage sensor (22).
摘要:
An electronic component analyzing apparatus is provided with a fixing part configured to hold a substrate to which an electronic component is soldered; a gripper configured to grip the electronic component; a transmission part coupled to the gripper, and configured to transmit an external force to the gripper as a force acting in a direction away from the substrate; and a support part configured to pivotally support the transmission part.
摘要:
A semiconductor device includes a substrate, an electronic component and a resin member. The substrate has a first electrode. The electronic component is provided on the substrate, and has a second electrode electrically connected to the first electrode. The resin member alleviates an external stress to the second electrode of the electronic component. The resin member is disposed on the substrate at a region separated from the electronic component.
摘要:
An exhaust gas purifying apparatus has a first housing including a DOC converter and DPF, and a second housing including an SCR converter, the housings disposed in parallel on the outer side of a frame such that the exhaust upstream ends thereof are positioned on the outer side in the vehicle width direction. An outlet port of the first housing and an inlet port of the second housing are communicatively connected through a communication pipe. The first housing is dividable into a first casing accommodating the DOC converter and a second casing accommodating the DPF, the two casings separably fastened by bolts. The inlet port of the first casing housing is bent inwardly in the width direction and detachably fastened to an exhaust pipe, the distal end of which opens outwardly in the width direction, through bolts. The second casing and housing are fixed to the frame through two brackets.