Headphone

Details Headphone Headphone

2006-09-19

2006-09-19

Le, Huyen (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Plural or compound reproducers

C381S371000, C381S382000

Reexamination Certificate

active

07110563

ABSTRACT:
Headphones or earphones are commonly known as electro-acoustic transducers used by a single listener. The invention relates to combing insert and non-insert electro-acoustic transducers in a headphone element. In this way a combination of a wide-low frequency reproduction (insert type) and a wide-high frequency reproduction (non-insert type) are obtained.

REFERENCES:
patent: 4239945 (1980-12-01), Atoji et al.
patent: 6259796 (2001-07-01), Lin
patent: 2006/0067555 (2006-03-01), Tsai

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