Acoustic transducer having multiple frequency resonance

Details Acoustic transducer having multiple frequency resonance Acoustic transducer having multiple frequency resonance

1978-03-27

1980-04-08

Tomsky, Stephen J.

Acoustics

Plural diaphragm sound sources

Plural chambers

181152, 181155, 181159, 181199, G10K 1300, H04R 700, H05K 500

Patent

active

041967909

ABSTRACT:
An acoustic transducer for reproduction of sound over a wide frequency band. The transducer consists of an elongated partially enclosed chamber having a sound source at one end and wherein the cross-sectional area of the chamber is decreased with distance along the length of the chamber away from the sound source. A curved wall is included in the chamber to serve as an expanding horn, the lower end of which is provided with an elongated slot aperture which widens exponentially as a function of the length of the chamber through which sound energy is delivered to the aperture of the horn.

REFERENCES:
patent: 2787332 (1957-04-01), Fulmer
patent: 2816619 (1957-12-01), Karlson
patent: 2819772 (1958-01-01), Bryan
patent: 2896736 (1959-07-01), Karlson
patent: 3590941 (1971-07-01), McKenzie

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