| 摘要 |
PURPOSE:To control a slide projector synchronizing with playing by utilizing an MIDI signal for controlling an electronic musical instrument. CONSTITUTION:A data for controlling the level of sound volume is extracted out of the MIDI signal inputted by an input port 5 by a selection circuit. Based on the data, a light control circuit 3 controls the light quantity of the slide projector in response to the level of the sound volume. |
