Electrical audio signal processing systems and devices – Binaural and stereophonic – Stereo speaker arrangement
Reexamination Certificate
2007-06-12
2007-06-12
Pendleton, Brian Tyrone (Department: 2615)
Electrical audio signal processing systems and devices
Binaural and stereophonic
Stereo speaker arrangement
C381S027000, C381S307000
Reexamination Certificate
active
11147447
ABSTRACT:
In a loudspeaker system with main and sub-speakers, a modified and inverted left surround signal is added to the signals driving the right main speaker and a modified and inverted right surround signal is added to the signals driving the Left Main Speaker for the purpose of creating more credible rear located phantom sound images. In a system using variations of a difference signal to create phantom rear located sound images, the components of the difference signal are modified by introducing a time delay to one of the components for the purpose of preventing the components of the difference signal from substantially canceling each other. The components of the difference signal may be modified by altering the relative level and frequency response of the components for the purpose of preventing the components of the difference signal from substantially canceling each other. In a system using variations of the difference signal to create phantom sound images, cost effective means are provided to isolate individual amplifier channels so as to block potentially damaging current flows without degrading performance.
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Britannia Investment Corp.
Pendleton Brian Tyrone
Sterne Kessler Goldstein & Fox P.L.L.C.
Tran Con P
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