ACOUSTIC SIGNAL OUTPUT DEVICE

Abstract: there is provided an acoustic signal output device that does not completely block the ear canal and is capable of suppressing sound leakage into the surroundings. there is provided an acoustic signal output device including a structure portion provided with one or more sound holes to emit an acoustic signal ac to outside and one or more sound holes to emit an acoustic signal ac to the outside. the sound holes are each positioned at an eccentric location offset in the b1-direction from a central axis of the structure portion. a sound pressure level of the acoustic signal ac that is emitted from the sound holes into a first space is lower than a sound pressure level of the acoustic signal ac that is emitted from the sound holes into a second space. here, the first space is a space positioned on the b1-direction side relative to the sound holes , the second space is a space positioned on the b2-direction side relative to the sound holes , and the b2 direction contains an opposite direction component of the b1 direction.

Inventor(s): Tatsuya KAKO, Hironobu CHIBA, Jun IWASE, Hiroaki SATO, Kazunori KOBAYASHI

CPC Classification: H04R1/347 ({for obtaining a phase-shift between the front and back acoustic wave})

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