A New Method of Disc Recording for Reproduction with Reduced Distortion: The Tracing Simulator
By means of an analog-computer technique, geometric playback distortions are simulated during disc recording. Second- and third-order harmonics are recorded so that the vertical and lateral components are free of tracing distortion in playback and pinch-effect distortion is removed in lateral recording. The method also offers the possibility of correcting the vertical recording angle by electrical means.
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