Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having acoustic wave modifying structure
Patent
1998-10-08
2000-02-22
Tran, Sinh
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Having acoustic wave modifying structure
381337, 381339, 181152, H04R 2500
Patent
active
060289473
ABSTRACT:
The present invention is a waveguide device having a body of molded, foam plastic with a speaker end and an open end and an even number of segments with a flat surface in a plane parallel to the speaker end. The segments have inside wall surfaces which flare increasingly outwardly from the speaker, and these inside wall surfaces have a speaker end length, L.sub.1, determined by the following formulas, L.sub.1 minimum=0.7.times.w.sub.s /0.0012 g/cm.sup.3 .times.1/A.sub.SE, and L.sub.1 maximum=1.2.times.w.sub.s /0.0012 g/cm.sup.3 .times.1/A.sub.SE, wherein L.sub.1 is a straight line length of the lower portion of the segment wall surface, w.sub.s is the weight of a speaker cone in grams/cm.sup.3, and A.sub.SE is the cross-sectional area of the speaker end in square centimeters. The waveguide body also includes an end plate with a speaker face and anchor inserts for attachment of a speaker thereto. The anchoring inserts are embedded in the waveguide body.
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Faraone Alexander
Lemon John W.
Glynn, Esq. Kenneth P.
Single Source Technology and Development, Inc.
Tran Sinh
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