| 摘要 |
A first and a second input signals, composing a stereophonic pair, are amplified in respective channels, added by adder means in a desired phase relationship, chosen between completely in phase and 180 DEG out of phase, and the sum signal thus produced is processed by a transfer bloc having a desired transfer function, and is superimposed on the signal in the first channel with opposite phase, and is then superimposed on the signal in the second channel with a 180 DEG out of phase or in phase relationship, according to whether the input signals are added respectively in phase or with opposite phase.
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