Multiple channel earphone

Details Multiple channel earphone Multiple channel earphone

2007-10-30

2007-10-30

Le, Huyen (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Plural or compound reproducers

C381S309000, C381S371000

Reexamination Certificate

active

10907047

ABSTRACT:
A multiple channel earphone is provided with an external tube disposed on the earphone main body. The earphone includes a case, a case extension unit, and a cover. A main sound field is formed in an interior chamber enclosed by the case, the case extension unit and the cover. By adjusting the space in the external tube, the spatial effect of the sound field is significantly increased. The proposed multiple channel earphone selectively has a mechanism for sound field balancing by the sounds generated from these two sub-speakers spaced apart from each other for better sound quality. The sound field of the proposed multiple channel earphone can also be spaced apart into two physically separated sound fields by disposing an external chamber on the earphone main body.

REFERENCES:
patent: 3943304 (1976-03-01), Piribauer
patent: 7155025 (2006-12-01), Weffer
patent: 2432832 (2004-12-01), None
patent: WO 2004/112423 (2004-12-01), None
patent: WO 2004/112423 (2004-12-01), None

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