Audio-Technica Corporation

Provided is an earphone device that enables desired functions without causing stress to users when the device is worn in an ear. The earphone device includes a sound emitting unit to be worn in the user's ear. The unit includes an antenna receiving an audio signal, a driver unit driven by the audio signal received by the antenna, and a battery storing power for the antenna. The battery is charged with the unit accommodated in a charger. The unit is inactive with the unit accommodated in the charger and active with the unit removed from the charger. The unit in the active state includes first and second operating modes. When a state of the unit is switched from the inactive state to the active state, the operating mode of the unit for a predetermined time after the switching is the first operating mode.

An earphone includes a housing that is connected with a nozzle for emitting sound to the outside, a fixed pole that is fixed inside the housing, a diaphragm that is provided so as to divide a space inside the housing into two, and vibrates in accordance with a potential difference generated between the diaphragm and the fixed pole facing each other, a support part that supports the diaphragm such that a portion of the diaphragm is in contact with the fixed pole, and an adjustment hole that is formed so as to penetrate a wall of the housing on a side opposite to the one having the nozzle, from the perspective of the diaphragm, and adjusts a pressure inside the housing. A through-membrane hole penetrating the diaphragm is formed in the portion of the diaphragm.

Provided is an earphone device capable of solving issues arising from the left and right sound emitting units being physically separated. The earphone device 1 includes a first sound emitting unit to be worn on one ear of a user and a second sound emitting unit be worn on the other. The first sound emitting unit includes a first antenna 141, a first driver unit 13, a first storage battery 16, and a first magnet for attachment to the second sound emitting unit. The second sound emitting unit includes a second antenna 241, a second driver unit 23, a second storage battery 26, and a second magnet for attachment to the first sound emitting unit. The first sound emitting unit is physically separable from the second sound emitting unit and the first and second sound emitting units are magnetically attached to each other by the first and second magnets.

An electroacoustic transducer includes: a diaphragm that has a main dome disposed on the central part, and a sub dome that annularly surrounds the main dome, with inner and outer circumferences each forming a circle of a predetermined radius; a support part that fixedly supports an outer peripheral edge of the sub dome; and a voice coil that is provided on the back side of the diaphragm and vibrates the diaphragm. The sub dome has a plurality of first vertices and a plurality of second vertices, which differ in at least one of (i) a distance from the outer peripheral edge in the radial direction and (ii) a position in the height direction, and are located at predetermined intervals in the circumferential direction. The plurality of first vertices and the plurality of second vertices are located on an annular curved surface that is continuous in the circumferential direction.

To provide an earphone with high sound quality while reducing pressure on a diaphragm. An earphone 1 including a diaphragm 6 , a driver unit 5 including the diaphragm on a front surface, a unit cap 2 that accommodates the driver unit, and an acoustic tube 3 connected to a front surface of the unit cap and forming a front air chamber on a front surface of the diaphragm, in which the unit cap includes a unit holding wall 21 that holds a side wall of the driver unit, and a communication hole 22 that communicates, on a front side relative to the unit holding wall, an inner side and an outer side of the unit holding wall and the front surface and a rear surface of the unit cap, and a central axis of a unit accommodating portion 21 a defined by the unit holding wall is deviated from a central axis of the unit cap.

Provided is to achieve high call quality and improve wearability. A wireless earphone 1 includes a driver unit ( 50 ), a first microphone ( 80 ), a second microphone ( 90 ), and a housing ( 10 ) that accommodates the driver unit ( 50 ), the first microphone ( 80 ), and the second microphone ( 90 ). The housing ( 10 ) includes a first accommodating portion ( 13 ) that accommodates the first microphone ( 80 ), a second accommodating portion ( 14 ) that accommodates the second microphone ( 90 ), and a main body ( 11 ) that is connected to each of the first accommodating portion ( 13 ) and the second accommodating portion ( 14 ). The first accommodating portion ( 13 ) is projectingly provided from the main body ( 11 ). The second accommodating portion ( 14 ) is projectingly provided from the main body ( 11 ) in a direction different from a projecting direction of the first accommodating portion ( 13 ).

An earpiece whose inner cylinder is not crushed when the earpiece is inserted into an ear canal of a user is provided. An earpiece according to the present invention includes an inner cylinder 1 that includes one open end and the other open end and is attached to a sound conduit C of an earphone E, and an outer cylinder 2 connected to the one end of the inner cylinder and extending in an umbrella shape toward the other end of the inner cylinder so as to cover an outer surface 1 b of the inner cylinder. The inner cylinder includes a fitting part 11 into which a tip of the sound conduit is fitted, and a sound guide part 12 configured to guide sound wave from the sound conduit to an ear canal. The sound guide part includes a constant diameter part 121 that has a constant inner diameter toward the one end side from the other end side and is disposed adjacent to the fitting part, and an expanded diameter part 122 that has an inner diameter continuously expanding toward one end side from the other end side and is disposed adjacent to the constant diameter part. The other end of the expanded diameter part is disposed closer to the other end side compared to a boundary B between an inner surface 2 a of the outer cylinder and the outer surface of the inner cylinder in an axial direction orthogonal to a radial direction of the inner cylinder. The length between an inner surface 122 a of the expanded diameter part and the outer surface of the inner cylinder in the radial direction of the expanded diameter part is the shortest at the boundary.

A headphone structure includes a driver unit; a baffle plate that holds the driver unit and has an acoustic hole through which a sound generated by the driver unit passes; an acoustic member disposed on a position closer to an outer edge of the baffle plate than the acoustic hole in the baffle plate; and an ear pad disposed on a surface of the acoustic member opposite to a surface that contacts the baffle plate.

An earphone includes a resonance circuit that outputs an adjusted signal obtained by making a signal component of a predetermined frequency contained in an electric signal outputted from a sound source device larger than a signal component of another frequency, a fixed electrode that is fixed to a housing, a diaphragm that is provided facing the fixed electrode and that vibrates according to a potential difference generated between the diaphragm and the fixed electrode on the basis of the adjusted signal, a contact part that contacts a partial region of the diaphragm and presses the partial region against the fixed electrode, and a sound emitting part that emits sound generated by vibration of the diaphragm to the outside of the housing.

A noise-cancelling headphone 1 includes a headphone unit ( 14 ), a baffle plate ( 13 ) to which the headphone unit is attached, an ear pad ( 12 ) attached to the baffle plate, a housing ( 11 ) attached to the baffle plate, a first microphone ( 16 ) that collects external noise, a first buffer amplifier unit ( 151 ) that performs impedance conversion to a signal from the first microphone and output the impedance-converted signal, a second microphone ( 17 ) that collects internal noise, a second buffer amplifier unit ( 152 ) that performs impedance conversion to a signal from the second microphone and outputs the impedance-converted signal, and a noise-cancelling signal generating circuit ( 154 ) that generates a noise-cancelling signal, based on a combined signal by combining the signal from the first buffer amplifier unit with the signal from the second buffer amplifier unit.