| 摘要 |
PURPOSE:To provide an automatic playing device which permits even a beginner with no sense of musical tempo to clearly know the tempo change in automatic play caused by his own operation. CONSTITUTION:When operational force is applied on the rotational direction of a turntable, it is accelerated. When the operational force is applied in the direction opposite to the rotational direction, it is decelerated. When the turntable changes its rotational speed due to the acceleration or deceleration, a tempo data B corresponding to changing turntable speed is set in a register A (SD10). At this state, when the corresponding servo data is applied to a motor servo circuit (SD5), the turntable is driven at accelerated or decelerated speed by spplying operational force. When automatic play is performed at the tempo stored in the register A (SD6), the tempo of an automatic play changes into the one corresponding to the speed of a driven turntable. |
