Also the same for playback-equalization. In tape recording, the internal and complementary alteration of the frequency response of input signals prior to recording and output signals after playback. By boosting highs prior to recording and reducing them after playback, some tape noise is eliminated. In addition, the equalization curve can compensate for nonlinear response of the specific type of recording tape in use. There are a number of standard record/playback curves. See also pre-emphasisRIAA.

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