Means and method of reducing interference in multi-channel repro

Details Means and method of reducing interference in multi-channel repro Means and method of reducing interference in multi-channel repro

1973-10-31

1976-03-16

Cooper, William C.

179 1G, H04H 500

Patent

active

039447480

ABSTRACT:
Means and method of reducing the distortion or channel separation due to interference voltages between the reproduction channels in multi-channel reproduction of acoustic sounds in systems having at least two different channels are described. The steps are deriving a control voltage from the low and high interference voltages which occurs in a channel which is proportional to the magnitude of the interference voltages, and using the control voltages as an adjustment to control the distortion or channel separation. The control voltages may be derived from a single channel. The control voltages may be combined to yield a single control signal. Both equal-phase distortion and phase-opposition distortion may be suppressed.

REFERENCES:
patent: 3539729 (1970-11-01), Von Recklinghausen
patent: 3673342 (1972-06-01), Muller
patent: 3745254 (1973-07-01), Ohta
patent: 3753159 (1973-08-01), Burwen
patent: 3786193 (1974-01-01), Tsurushima
patent: 3823268 (1974-07-01), Modafferi

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