Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1988-08-16
1990-10-23
Isen, Forester W.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
381 93, 381 86, H04R 2700
Patent
active
049658336
ABSTRACT:
A voice enhancer system for a car includes a pair of microphones positioned adjacent to the front seats of the car, and a pair of loudspeakers positioned adjacent to the rear seats. The microphones are connected to the loudspeakers, via an amplifier/electrical conditioning unit, by electrical wiring positioned behind the car's upholstery. The conditioning unit, which includes filters and a frequency shifter is adjusted to prevent acoustical `howl-around` within the enclosure of the car. For voice enhancement from the rear to the front of the car, microphones may be positioned adjacent to the rear seats, and loudspeakers may be positioned adjacent to the front seats, these components being connected together, via a second amplifier/electrical conditioning unit, by electrical wiring.
REFERENCES:
patent: 1060851 (1913-05-01), Pape
patent: 1182926 (1916-05-01), O'Brien
patent: 1272993 (1918-07-01), Pape
patent: 2723316 (1955-11-01), Goodell et al.
patent: 3105877 (1963-10-01), Miller et al.
patent: 3168619 (1965-02-01), Harrison
patent: 3238302 (1966-03-01), Curchaek
patent: 3665106 (1972-05-01), Parshad
patent: 4506380 (1985-03-01), Matsui
patent: 4588859 (1986-05-01), Liberman
patent: 4589133 (1986-05-01), Swinbanks
patent: 4641344 (1987-02-01), Kasai et al.
patent: 4817160 (1989-03-01), De Koning et al.
Brook, "A Frequency Shifter for Public Address Systems" Electronics Australia, vol. 37, No. 5, pp. 54, 55, 57, 59, Aug. 1975.
Firth Ian M.
McGregor Thomas
Wemyss George A.
Hall James D.
Isen Forester W.
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