Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having acoustic wave modifying structure
Patent
1998-02-26
2000-04-25
Kuntz, Curtis A.
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Having acoustic wave modifying structure
381337, 381338, 381342, 181152, 181153, H04R 2500
Patent
active
060553200
ABSTRACT:
A directional speaker system includes an enclosure having an inner surface, an outer surface, an open end, and a closed end, a speaker driver directed toward the open end and mounted near the closed end of the enclosure, an in-line phase plug mounted in front of the speaker driver for manipulating the wavefront of sound waves produced by the speaker driver, and a preferably frustoconical shaped wave guide provided between the speaker driver and the open end of the speaker enclosure. The in-line phase plug preferably has a plurality of channels. The open end of the enclosure is preferably provided with an acoustically absorbent material around its inner perimeter. A second acoustically absorbent material is provided between the speaker driver, the in-line phase plug, and the wave guide, and the speaker enclosure. The in-line phase plug, wave guide phase plug and baffle plate operate to flatten the wavefront.
REFERENCES:
patent: 1120858 (1914-12-01), Stallforth
patent: 1866921 (1932-07-01), Black
patent: 2228024 (1941-01-01), Abrahams
patent: 2643727 (1953-06-01), Leon
patent: 3647284 (1972-03-01), Elings et al.
patent: 3776361 (1973-12-01), Rolle
patent: 3832888 (1974-09-01), Langlois
patent: 3895188 (1975-07-01), Ingraham
patent: 3908095 (1975-09-01), Jinsenji
patent: 3982607 (1976-09-01), Evans
patent: 4157741 (1979-06-01), Goldwater
patent: 4421200 (1983-12-01), Ferralli et al.
patent: 4629030 (1986-12-01), Ferralli
patent: 4801941 (1989-01-01), Sabet-Peyman
patent: 4836328 (1989-06-01), Ferralli
patent: 4964100 (1990-10-01), Srour et al.
patent: 4967873 (1990-11-01), Hacchow et al.
patent: 5033456 (1991-07-01), Pell et al.
patent: 5050436 (1991-09-01), Kunii et al.
patent: 5109423 (1992-04-01), Jacobson et al.
patent: 5199075 (1993-03-01), Fosgate
patent: 5220608 (1993-06-01), Pfister
patent: 5268539 (1993-12-01), Ono
patent: 5532438 (1996-07-01), Brown
patent: 5822443 (1998-10-01), Kim
patent: 5832099 (1998-11-01), Wiener
Secret Sound.RTM.-The Unique Directional Speaker System sales brochure from Museum Tools, at least as early as Apr., 1991.
Burgess Steven
Wiener David
Gallagher Thomas A.
Gordon David P.
Harvey Dionne N.
Jacobson David S.
Kuntz Curtis A.
LandOfFree
Directional horn speaker system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Directional horn speaker system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Directional horn speaker system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1000013