Abstract: A microphone according to an embodiment includes: an ear chip including a cylindrical part with a hollow part formed therein, and a contact part disposed outside the cylindrical part and configured to come into contact with an inner wall surface of an ear canal; a cable lead out to a gap between the cylindrical part and the contact part; and a microphone element disposed in the hollow part and connected to the cable.

Abstract: A filter determination system, a filter determination device, a filter determination method and a program with which a filter can be appropriately determined are provided. A processing device according to this embodiment includes a frequency response acquisition unit that acquires a frequency response of a filter for an audio signal, a smoothing unit that smoothes the frequency response and obtains a smoothed response, a candidate point determination unit that determines candidate split points based on a bottom position of the smoothed response, and a split point determination unit that determines one or more band split points from the candidate split points.

Abstract: A signal processing device of an embodiment includes a measurement signal generation unit that generates a measurement signal to be output from the sound source, a sound pickup signal acquisition unit that acquires sound pickup signals picked up by a plurality of microphones, a sound source information acquisition unit that acquires sound source information about a horizontal angle of a sound source, filters that have a passband set based on the sound source information and output a filter passing signal in response to input of the sound pickup signals, a phase difference detection unit that detects a phase difference between two sound pickup signals based on the filter passing signal, and a determination unit that determines a result of measurement of the sound pickup signals by comparing the phase difference with an effective range set based on the sound source information.

Abstract: A signal processing device according to an embodiment includes a measurement signal generation unit that generates a first measurement signal and outputs the signal to headphones, a sound pickup signal acquisition unit that acquires a first sound pickup signal obtained by picking up the first measurement signal by a microphone, a signal analysis unit that calculates a frequency response of the first sound pickup signal, a fit determination unit that determine a fit of the headphones by comparing a response value of the frequency response in a specified frequency band with a reference value, and a display unit that outputs gradual results of the determination in accordance with a percentage of the response value with respect to the reference value.

Abstract: A superconducting wire has a tape-like shape, and includes a superconducting layer. An amount of heat required to raise temperature from 77 K to 300 K, for a unit region having a length of 1 m and a width of 4 mm in the superconducting wire, is more than or equal to 200 J and less than or equal to 500 J.

Abstract: An oxide superconducting wire includes an oriented metal substrate, an intermediate layer formed on the oriented metal substrate, and an oxide superconducting layer formed on the intermediate layer. The oriented metal substrate has an in-plane orientation ?? of 7° or less. The intermediate layer is formed of a single layer.

Abstract: A superconducting wire includes a multilayer stack and a covering layer (stabilizing layer or protective layer). The multilayer stack includes a substrate having a main surface and a superconducting material layer formed on the main surface. The covering layer (stabilizing layer or protective layer) is disposed on at least the superconducting material layer. A front surface portion of the covering layer (stabilizing layer or protective layer) located on the superconducting material layer (front surface portion of the stabilizing layer or upper surface of the protective layer) has a concave shape.

Abstract: An out-of-head localization filter determination system according to an embodiment includes headphones, a microphone unit, an out-of-head localization device, and a server device. The out-of-head localization device transmits user data based on measurement data to the server. The server device includes a data storage unit configured to store a plurality of first and second preset data acquired for a plurality of persons being measured, a comparison unit configured to compare the user data with the plurality of second preset data, and an extraction unit configured to extract first preset data from the plurality of first preset data based on a comparison result.

Abstract: A superconducting wire according to one embodiment of the present disclosure includes: a substrate having a first surface and a second surface; a superconducting layer having a third surface and a fourth surface; and respective coating layers. The second surface is opposite to the first surface. The fourth surface is opposite to the third surface. The superconducting layer is disposed on the substrate such that the third surface faces the second surface. The respective coating layers are disposed on the first surface and the fourth surface. Adhesion strength between the substrate and the coating layer disposed on the first surface is lower than adhesion strength between the superconducting layer and the coating layer disposed on the fourth surface.

Abstract: A processor of a filter generation device according to an embodiment includes an extraction unit that extracts a first signal having a first number of samples from samples preceding a boundary sample of a sound pickup signal, a signal generation unit that generates a second signal containing a direct sound from a sound source and having a second number of samples larger than the first number of samples based on the first signal, a transform unit that transforms the second signal into a frequency domain and generates a spectrum, a correction unit that increases a value of the spectrum in a correction band and generates a corrected spectrum, an inverse transform unit that inversely transforms the corrected spectrum into a time domain and generates a corrected signal, and a generation unit that generates a filter based on the sound pickup signal and the corrected signal.

Abstract: A sound pickup device according to this embodiment includes a microphone part placed at a sound pickup position in close proximity to an ear hole without blocking an ear canal, and positioned so as to face outside of the ear canal, and a wire having flexibility and extending to the sound pickup position. Further, in this embodiment, at least part of the wire is formed along an auricle.

Abstract: A superconducting wire includes: a substrate having a first main surface and a second main surface opposite to the first main surface; and a superconducting material layer disposed on the first main surface of the substrate. The superconducting material layer is disposed to cover at least a part of a side surface of the substrate in a width direction of the substrate.

Abstract: A superconducting wire includes a multilayer stack and a covering layer (stabilizing layer or protective layer). The multilayer stack includes a substrate having a main surface and a superconducting material layer formed on the main surface. The covering layer (stabilizing layer or protective layer) is disposed on at least the superconducting material layer. A front surface portion of the covering layer (stabilizing layer or protective layer) located on the superconducting material layer (front surface portion of the stabilizing layer or upper surface of the protective layer) has a concave shape.

Abstract: A microphone according to an embodiment includes: an ear chip including a cylindrical part with a hollow part formed therein, and a contact part disposed outside the cylindrical part and configured to come into contact with an inner wall surface of an ear canal; a cable lead out to a gap between the cylindrical part and the contact part; and a microphone element disposed in the hollow part and connected to the cable.

Abstract: An out-of-head localization processing apparatus according to the embodiments includes a filter selection unit configured to select a preset filter, an out-of-head localization processing unit configured to perform out-of-head localization processing using the preset filter selected, headphones configured to output, to a user, a signal of a test sound source, an input unit configured to accept a user input, a sensor unit, a three-dimensional coordinate calculation unit configured to calculate three-dimensional coordinates of a localized position of a sound image based on a detection signal from the sensor unit, and an evaluation unit configured to evaluate, based on the three-dimensional coordinates of each of the preset filters, a filter optimal for the user from the plurality of preset filters.

Abstract: A measurement device according to this embodiment includes a peak detection unit that detects positive and negative peaks included in a sound pickup signal, a sign determination unit that determines a positive or negative sign based on amplitudes at the negative and positive peaks detected by the peak detection unit, a peak group separation unit that separates a peak sequence composed of the peaks with the determined sign into a plurality of peak groups, a maximum amplitude detection unit that detects a maximum amplitude in each of the plurality of peak groups, a signal cutout unit that cuts out the sound pickup signal at cutout timing based on the maximum amplitude and generates a plurality of cutout signals, and a signal adding unit that adds the plurality of cutout signals.

Abstract: A transfer characteristics measurement unit measures first transfer characteristics from left and right sound sources to left and right microphones, respectively. An environmental measurement unit picks up environmental measurement signals output from the left and right sound sources with use of the left and right microphones, sets an amplitude level of transfer characteristics measurement signals and a tap length of the transfer characteristics, picks up sounds with use of the left and right microphones in a state where no sound is output from the left and right sound sources, and measures second transfer characteristics. A correction unit corrects a low frequency range of the first transfer characteristics based on the second transfer characteristics.

Abstract: A filter generation device includes left and right speakers, left and right microphones, and a processor that generates filters in accordance with transfer characteristics from the left and right speakers to the left and right microphones based on sound pickup signals. The processor includes a direct sound arrival time search unit that searches for a direct sound arrival time by using a time at which an absolute value of an amplitude reaches its maximum, a left and right direct sound determination unit that determines whether signs of amplitudes at the direct sound arrival time match, an error correction unit that, when the signs do not match, corrects cutout timing so that the direct sound arrival times coincide, and a waveform cutout unit that cuts out the transfer characteristics.

Abstract: An out-of-head localization processing apparatus according to an embodiment includes headphones, left and right microphones, a measurement unit configured to measure left and right headphone transfer characteristics, respectively, an inverse-filter calculation unit configured to calculate inverse filters of the headphone transfer characteristics, a correction unit configured to calculate correction filters by correcting the inverse filters, and an input unit configured to receive a user input. The correction unit corrects the inverse filters by using a predefined correction function in a first frequency band. The correction unit corrects the inverse filters according to a correction pattern selected based on the user input in a second frequency band.

Abstract: A measurement device according to this embodiment includes a peak detection unit that detects positive and negative peaks included in a sound pickup signal, a sign determination unit that determines a positive or negative sign based on amplitudes at the negative and positive peaks detected by the peak detection unit, a peak group separation unit that separates a peak sequence composed of the peaks with the determined sign into a plurality of peak groups, a maximum amplitude detection unit that detects a maximum amplitude in each of the plurality of peak groups, a signal cutout unit that cuts out the sound pickup signal at cutout timing based on the maximum amplitude and generates a plurality of cutout signals, and a signal adding unit that adds the plurality of cutout signals.