Communications earpiece and method of attenuating acoustical...

Details Communications earpiece and method of attenuating acoustical... Communications earpiece and method of attenuating acoustical...

2006-05-23

2006-05-23

Ni, Suhan (Department: 2646)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Plural or compound reproducers

C381S324000, C381S382000

Reexamination Certificate

active

07050599

ABSTRACT:
A communications earpiece includes a member shaped to fit within an ear canal. The member has a passageway extending therethrough. There is a filter communicating with the passageway. The filter has a passageway extending therethrough and is aligned with the passageway in the member. The passageway in the filter has at least a portion which is narrower than the passageway in the member. Preferably the passageway in the filter has a first section and a second section. The second section is narrower than the first section and the passageway in the member. A method of attenuating acoustical signals in the communications earpiece is also provided. The earpiece has a member shaped to fit within an ear canal. The member has a passageway extending therethrough. The method comprises placing a restriction in the earpiece which is substantially narrower than the passageway and which communicates with the passageway.

REFERENCES:
patent: 2545731 (1951-03-01), French
patent: 2573132 (1951-10-01), French
patent: 3732382 (1973-05-01), DeWitt
patent: 4311206 (1982-01-01), Johnson
patent: 4375016 (1983-02-01), Harada
patent: 4683587 (1987-07-01), Silverman
patent: 5488205 (1996-01-01), Major

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