Earphone without impulse noise and conductive hearing loss

Details Earphone without impulse noise and conductive hearing loss Earphone without impulse noise and conductive hearing loss

1999-06-11

2000-07-04

Kuntz, Curtis A.

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Plural or compound reproducers

381370, 381371, 379430, 181129, H04R 2500

Patent

active

060849762

ABSTRACT:
An earphone without impulse noise and conductive hearing includes a loudspeaker having a first sound output end for producing a high intensive sound wave and a second sound output end for producing a low intensive sound wave, and an earphone housing which includes a housing body, a sound output hood and a sound collecting hood. The housing body has a first open-end, a second open-end and a receiving chamber therein for mounting the loudspeaker. A sound output hood, which has a plurality of meshes thereon, is positioned in front of the first sound output end of the loudspeaker. The sound collecting hood, which has a plurality of meshes thereon, is positioned in front of the second sound output end of the loudspeaker. In which, the high intensive sound wave produced at the first sound output end emits outside the housing body through the meshes of the sound output hood and returns between the second sound output end of the loudspeaker and the sound collecting hood inside the housing body through a sound inlet provided around the housing body. Thereby the high intensive sound wave and the low intensive sound wave are constructively and destructively interfered between the sound collecting hood and the second sound output end of the loudspeaker to form a combined sound wave with high-clarity sound interval to emit through the meshes of the sound collecting hood.

REFERENCES:
patent: 4005278 (1977-01-01), Gorike

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