Soundstage boundary expansion system

Details Soundstage boundary expansion system Soundstage boundary expansion system

1984-01-27

1986-04-29

Isen, Forester W.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Hearing aid

381 1, 1791155DV, H04R 500

Patent

active

045861927

ABSTRACT:
A system for providing the effect of an extended soundstage comprises a pair of stereophonic loudspeakers, each having a movable or vibrational element driven by a pair of voice coils including a principal or main voice coil and an auxiliary or enhancement voice coil. The principal voice coil of each speaker is driven in a customary manner from one channel of a stereophonic amplifier, while the enhancement voice coil is driven in a reversed phase sense from the output of the opposite channel, and sound is effectively provided over an extended apparent source having dimensions beyond the spacing between the loudspeakers.

REFERENCES:
patent: 2205365 (1940-06-01), Schwaen
patent: 3892927 (1975-07-01), Lindenberg
patent: 4160882 (1979-07-01), Driver
patent: 4308423 (1981-12-01), Cotten
patent: 4309570 (1982-01-01), Carver
patent: 4357498 (1982-11-01), Tsuchiya et al.
patent: 4438297 (1984-03-01), Kawamura

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