Research output: Contribution to journal › Article
Abstract
When a listener's tragus is vibrated by ultrasound with amplitude modulation of audible sound, an audible sound is perceived. We have been developing an ultrasound earphone based on this interesting phenomenon. We consider that audible sound can be produced by the ultrasound transmitted from an actuator to the external auditory canal. This earphone reproduces a sufficiently loud high-frequency band sound. On the other hand, it cannot reproduce low-frequency band sound. A bone conduction earphone that actuates facial bones by audible band vibration easily leaks sound to the air in the high-frequency band. We propose a hybrid ultrasonic earphone system combined with audible band bone conduction vibration. This system enables an earphone to transmit sound that is not close to a listener's ears, and sound leakage is small. We report the structure of this system and this characteristic.
abstract = "When a listener's tragus is vibrated by ultrasound with amplitude modulation of audible sound, an audible sound is perceived. We have been developing an ultrasound earphone based on this interesting phenomenon. We consider that audible sound can be produced by the ultrasound transmitted from an actuator to the external auditory canal. This earphone reproduces a sufficiently loud high-frequency band sound. On the other hand, it cannot reproduce low-frequency band sound. A bone conduction earphone that actuates facial bones by audible band vibration easily leaks sound to the air in the high-frequency band. We propose a hybrid ultrasonic earphone system combined with audible band bone conduction vibration. This system enables an earphone to transmit sound that is not close to a listener's ears, and sound leakage is small. We report the structure of this system and this characteristic.",
author = "学 岡本 and 正人 三好 and 章俊 片岡 and 眞一郎 岩宮",
year = "2005",
month = "11",
day = "17",
language = "Japanese",
volume = "105",
pages = "25--30",
journal = "IEICE technical report",
issn = "0913-5685",
publisher = "一般社団法人電子情報通信学会",
number = "403",
}
TY - JOUR
T1 - 可聴骨伝導を併用した超音波ヘッドホン
AU - 岡本, 学
AU - 三好, 正人
AU - 片岡, 章俊
AU - 岩宮, 眞一郎
PY - 2005/11/17
Y1 - 2005/11/17
N2 - When a listener's tragus is vibrated by ultrasound with amplitude modulation of audible sound, an audible sound is perceived. We have been developing an ultrasound earphone based on this interesting phenomenon. We consider that audible sound can be produced by the ultrasound transmitted from an actuator to the external auditory canal. This earphone reproduces a sufficiently loud high-frequency band sound. On the other hand, it cannot reproduce low-frequency band sound. A bone conduction earphone that actuates facial bones by audible band vibration easily leaks sound to the air in the high-frequency band. We propose a hybrid ultrasonic earphone system combined with audible band bone conduction vibration. This system enables an earphone to transmit sound that is not close to a listener's ears, and sound leakage is small. We report the structure of this system and this characteristic.
AB - When a listener's tragus is vibrated by ultrasound with amplitude modulation of audible sound, an audible sound is perceived. We have been developing an ultrasound earphone based on this interesting phenomenon. We consider that audible sound can be produced by the ultrasound transmitted from an actuator to the external auditory canal. This earphone reproduces a sufficiently loud high-frequency band sound. On the other hand, it cannot reproduce low-frequency band sound. A bone conduction earphone that actuates facial bones by audible band vibration easily leaks sound to the air in the high-frequency band. We propose a hybrid ultrasonic earphone system combined with audible band bone conduction vibration. This system enables an earphone to transmit sound that is not close to a listener's ears, and sound leakage is small. We report the structure of this system and this characteristic.