Earphone
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United States of America Patent
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Aug 27, 2019
Grant Date -
Jun 7, 2018
app pub date -
Jun 8, 2016
filing date -
Jun 17, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
An earphone (1) is provided that includes a first vibration plate (31) for vibration by a first piezoelectric element (32) and a cylindrically-shaped casing (2) for transmission of the vibration of the first vibration plate (31) to ear canal cartilage. The first vibration plate (31) is disposed inside the casing (2). The earphone (1) has a structure whereby an amount of sound leakage, which is due to transmission of the vibration of the first vibration plate (31) to the air, is low. The ear canal cartilage transmits sound to the eardrum of only one ear, thereby enabling localization of sound. The woofer (3) maintains sound pressure at low frequencies.
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