| 摘要 |
PROBLEM TO BE SOLVED: To display the temporal flow of the musical sounds of a plurality of tracks in a graphic picture on a display device. SOLUTION: A CPU 21 receives pitch data from a keyboard 2 and switch data from various switches 22, transmits the instructions of sound generation and sound tuning off to a sound source 23 based on the inputted data and outputs audio signals to a speaker 12 and an audio output terminal 13 through an amplifier 24. In this case, picture data of the graphic picture, which shows the temporal flow of the musical sounds of a plurality of tracks, are plotted in a RAM 25 and are transferred to a VDP 27. The VDP 27 converts the picture data into the picture data to be displayed on a screen, writes the data into a VRAM 28, the picture data equivalent to one picture are read from the VRAM 28, RGB analog signals are converted into video signals by an RGB.ENCODER 29 and the signals are transmitted to a television receiver from a video output terminal 14. |
