| 摘要 |
PURPOSE:To eliminate a noise caused by the signal lack of drop-out, head switching, etc., by recording plural signals by providing a prescribed time difference to each other, executing the time matching of plural signals which are reproduced, and replacing a lacking part with other signal when the plural signals are lacked. CONSTITUTION:The FM sound signal of a right side signal is delayed by a delaying circuit 17 and becomes as shown by figure C. In a drop-out part in which envelope levels of parts R3-R6 of a signal shown by figure C are shown by zero,a switch 20 fetches a signal from a terminal (b), therefore, the sound signal of figure D is fetched from a terminal 24 connected to the movable contact piece of the switch 20. In the same way, the sound signal of figure E is fetched from a terminal 25. In figures D, E, parts r1-r6 show the right side signal which demodulate the FM sound signals of parts R1R6, and parts l1-l6 show a left side signals which demodulate the FM sound signal of parts L1-L6. The right side signal and the left side signal whose time positions correspond to each other have the correlation of some extent, therefore, can be compensated by replacing the drop-out part of the right (left) side signal with the left (right) signal of the same time position. |
