| 摘要 |
PURPOSE:To make edition, by giving a delay to the voice reproduction signal of a slave tape by the head distance time exclusively used for playback and recording of a slave tape recording and playback device, in editing an original tape on the slave tape. CONSTITUTION:The frequency band of an audio analog input signal is limited at LPFs 1, 13 to prevent the folded noise at signal sampling and the signal is quantized at AD converters 2, 14. This quantized signal is added with a code making error detection and another code for data correction, at error detection and correction code addition circuits 3, 15, and it is modulated at modulation circuits 4, 16 and recorded as audio digital signal on an original tape 5 and a slave tape 17 at respectively audio recording heads Hd2 and Hd5. In this case, the output of an error detection, compensation, and correction circuit 20 is delayed by the time of l/V=T, when making the stationary tape speed as V(cm/s) and the head distance as l(cm). |
