| 摘要 |
<p>PURPOSE:To automatize program searching by providing a mechanism control part which sets a mechanism to the rewinding state when the output of an audio signal detecting part is set and the output of a microphone signal detecting part is in the reset state over a certain time and sets the mechanism to the reproducing state when the output of a play signal music start detecting part is set. CONSTITUTION:If a user turns off the switch of a microphone 1 in hand when to sing again from the beginning, the output of a microphone input signal detecting part 4 goes to the low level.Since a tape recorder is in the reproducing state, the output of an audio signal detecting part 8 is in the high level. If this state continues over a certain time T, a comparison detecting part 9 sets the high-level output and issues a rewinding instruction to a mechanism control part 10. The play signal from an audio multiplex tape 5 is sent to a regenerative amplifier 13 from a play-side reproducing head 12 and is amplified by the amplifier 13, and a no-signal part, namely, the music start is detected by a play signal music start detecting part 14 which detects whether a signal exists or not, and the high-level output is set, and a reproducing instruction is issued to the mechanism control part 10 to set a mechanism 11 to the reproducing state.</p> |
