Audio-technica Corporation

Kabushiki Kaisha Audio Technica

Daisuke Yoneyama

Takashi Nara

Koji Otsuka

Yutaro Kumagai

Naoto Nakamura

Yumi Shimazaki

Shohei Tokoi

Kensuke Iizuka

Battery charger for earphones

Earphone

Battery charger for earphone

A headphone in which the air pressure in a front cavity can be released to an external space, and whose characteristics in a low frequency range can be simply and finely adjusted is provided. The headphone includes: a driver unit; a baffle member holding the driver unit; the passage forming member attached to the baffle member and forming a vent passage with the baffle member; an ear pad defining a first space; and a cover member defining a second space. The baffle member includes: a first surface facing the first space; a second surface facing the second space; and a first through hole communicating with an internal space of the vent passage. The passage forming member includes a second through hole communicating with the internal space of the vent passage. The second space communicates with an external space of the cover member. The first space communicates with the second space through the first through hole, the vent passage, and the second through hole.

Headphone

A headphone includes a driver unit, the first housingthat forms a first air chamberon a back side of the driver unit, the second housingthat forms a second air chamberon an opposite side of an inner surface different from an inner surface where the driver unitis provided in the first housing, and a damperprovided in the second housing. In the first housing, an openingthat communicates between the first air chamberand the second air chamberis formed.

A headphone includes a feedback microphone that receives a front air chamber sound including an external sound, the feedback microphone being provided on a front air chamber side, a driver unit that emits a noise-canceling sound into the front air chamber, the noise-canceling sound canceling at least a part of the sound included in the front air chamber sound received by the feedback microphone, a balanced microphone that receives the noise-canceling sound emitted from the driver unit, the balanced microphone being provided in a region on a side of the driver unit opposite the front air chamber, and a sound generating part that generates the noise-canceling sound by adding a signal based on the noise-canceling sound received by the balanced microphone to a signal based on the front air chamber sound received by the feedback microphone.

Noise-cancelling headphone

Growing community of inventors

Kanagawa, Japan

Daisuke Yoneyama