Electrical audio signal processing systems and devices – Binaural and stereophonic – Hearing aid
Patent
1985-11-27
1987-11-03
Isen, Forester W.
Electrical audio signal processing systems and devices
Binaural and stereophonic
Hearing aid
381 89, H04R 500
Patent
active
047047291
ABSTRACT:
The single acoustic box with spatial effect for stereophonic musical reproduction systems, according to the invention, consists of an outer shell having at the top a loudspeaker for low-frequency sounds and on the lateral walls at least two loudspeakers for medium- and high-frequency sounds, positioned opposite to each other, and is equipped with a separating circuit having two inputs connectable to an amplifier of a stereophonic musical reproduction system and several outputs for low-frequency signals, unified and connected to the loudspeaker for low-frequency sounds and for high-frequency signals, divided between the two stereophonic reproduction channels, connected to two or more loudspeakers for medium - and high frequencies.
The spatial effect is perceived by the listener due to the multiple reflections of the acoustic waves against the walls of the installation site.
REFERENCES:
patent: 2768702 (1956-10-01), Lowry
patent: 3054856 (1962-09-01), Arany
patent: 3688864 (1972-09-01), Guss
patent: 4326099 (1982-04-01), Maille
patent: 4528691 (1985-07-01), Edwards
Franzini Angelo
Fricker Eric
Dubno Herbert
Fricker France
Isen Forester W.
Ross Karl F.
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