Speaker apparatus

Details Speaker apparatus Speaker apparatus

2008-04-01

2008-04-01

Ensey, Brian (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Having acoustic wave modifying structure

C381S340000

Reexamination Certificate

active

07352875

ABSTRACT:
The present invention provides a speaker apparatus which has a simple structure and a high directivity and which can emit sound. The speaker apparatus includes a hood having an opening at a front end with a sound reflecting inner wall shaped like a rotating surface and provided at least on the opening side, the sound reflecting inner wall having a focus behind the opening, the hood being formed with an internal space, and a sound processing section having a vibrating surface and a sound emitting circuit both provided in the hood, the sound emitting circuit vibrating the vibrating surface. Consequently, the diameter of the vibrating surface of the sound processing section, which diameter determines the spread, outside the hood, of a sound emitted by the speaker apparatus, can be considered to be larger than its actual dimension.

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patent: 2002/0070073 (2002-06-01), Matsumoto et al.
patent: 2003/0021435 (2003-01-01), Nakaso

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