Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having acoustic wave modifying structure
Patent
1997-05-16
2000-02-29
Kuntz, Curtis A.
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Having acoustic wave modifying structure
381186, 381182, H04R 2500
Patent
active
060319208
ABSTRACT:
A sound focusing speaker system includes a sound focusing lens having an upper parabolic portion and a coaxial lower parabolic portion, each defined by different parabolic equations. A conical skirt is also provided adjacent the lower parabolic portion, and a lower lip is provided around the conical skirt. A speaker driver system is provided within the sound focusing lens. The speaker system includes a high frequency driver, a low frequency driver, and a sound dispersion lens into which the low frequency driver fires. The high frequency driver is vertically aligned with the focus of the upper parabolic portion, and a central portion of the sound dispersion lens is vertically aligned with the focus of the lower parabolic portion. The conical skirt contains reflected waves. The coaxial dual parabolic sound focusing speaker system is optimized to accurately reproduce a broad frequency spectrum of sound and to reflect the sound into a substantially vertical beam. As a result, optimal sound reproduction is provided and the sound is confined to a relatively controlled vertical beam. A second embodiment is provided in which the sound focusing lens is provided with an internal baffle to partially separate two halves of the sound focusing lens. The sound focusing lens may be used with stereo speaker drivers to provide two beams of sound and providing stereo sound imaging.
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Secret Sound.RTM. --The Unique Directional Speaker System sales brochure from Museum Tools, at least as early as Apr., 1991.
Gallagher Thomas A.
Gordon David P.
Harvey Dionne N.
Jacobson David S.
Kuntz Curtis A.
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