Diaphragm for attenuating harmonic response in an electroacousti

Details Diaphragm for attenuating harmonic response in an electroacousti Diaphragm for attenuating harmonic response in an electroacousti

1979-09-04

1986-04-08

Crosland, Donnie L.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

181166, H04R 726

Patent

active

045814961

ABSTRACT:
A circular diaphragm typically edge mounted to the housing of an electroacoustic transducer includes a plurality of inwardly curved slots isolated by a circular ridge formed in the diaphragm to thereby increase the compliance of the diaphragm at the center of the circular ridge. Portions of the slots are overlapped to maintain a substantially rectangular section of the diaphragm between the slots. The slotting and rectangular sections of the diaphragm allow the center of the circular ridge to flex in a piston-like manner whereby higher frequency flexural modes of the diaphragm are either reduced or completely eliminated.

REFERENCES:
patent: 1040294 (1912-10-01), Hoffman et al.
patent: 1757451 (1930-05-01), Crane
patent: 1882974 (1932-10-01), Schlenker
patent: 1918422 (1933-07-01), Nystrom
patent: 1990409 (1935-02-01), Lawrance
patent: 1997790 (1935-04-01), Heidrich
patent: 2815823 (1957-12-01), Olson et al.
patent: 3464514 (1969-09-01), Mochida et al.
patent: 3549829 (1970-12-01), Heidrich

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