| 摘要 |
<p>PURPOSE:To visually increase the S/N for a magnetic tape on which the analog signal is recorded, by recording the control signal at the area where no recording signal is recorded and performing the muting when the control signal is detected during the reproduction. CONSTITUTION:A tape is set with the input of a performance key, and a CPU15 decides the input of a low-pass filter 13. the filter 13 produces a signal when the control signal recorded on the tape is supplied and turns off a muting circuit 10 by the signal applied from an A/D converter 14 via a control line (j). At the same time, the CPU15 sends a performance command signal to a mechanical controller 19. In the fast forward mode of the tape, the CPU15 decides the fast forward through the function of a keyboard and sends the control signal to the controller 19 for the high-speed winding of the tape. With the start of the fast reproduction, the CPU15 detects the control signal given from a low-pass filter 17 and gives the control to the tape travelling in order to obtain the normal performance mode.</p> |
