Multiport underwater sound transducer

Details Multiport underwater sound transducer Multiport underwater sound transducer

1990-12-06

1993-02-02

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367163, 367174, 367176, 310337, 181160, 181182, H04R 1700

Patent

active

051843323

ABSTRACT:
A multiport underwater sound transducer including a hollow resilient housing enclosing a volume with at least two ported resonant chambers and a transduction driver disposed within the volume with opposite sides of the driver driving the two chambers. The two ports are set to resonate at slightly different frequencies and the tranducer proudces an additive output at frequencies between the two slightly different frequencies due to phase reversals of oppositely phased sound waves.

REFERENCES:
patent: 3562451 (1971-02-01), Mullen, Jr.
patent: 4413198 (1983-11-01), Bost
patent: 4549631 (1985-10-01), Bose
patent: 4628528 (1986-12-01), Bose et al.
patent: 4821244 (1989-04-01), Wood

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