Circuit for improving the stereo image separation of a stereo si

Details Circuit for improving the stereo image separation of a stereo si Circuit for improving the stereo image separation of a stereo si

1995-06-30

1998-06-02

Kuntz, Curtis A.

Electrical audio signal processing systems and devices

Binaural and stereophonic

381 17, 381 63, 381103, H04R 500, H03G 500

Patent

active

057613133

ABSTRACT:
By using special frequency response manipulation in the difference channel of a stereo signal, the stereo image will appear to extend beyond the actual placement of the loudspeakers. This is accomplished by shaping the difference channel response to simulate the response one would be subjected to if the sources were physically moved to the virtual positions. The circuit includes a summing and high frequency equalization circuit to which the left and right stereo signals are applied, and a difference forming and human ear equalization circuit also to which the left and right stereo signals are applied. The outputs from these circuits are cross-coupled to form left and right channel outputs.

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