| 摘要 |
PURPOSE:To allow whether additive sounds are displayed simultaneously with perfor mance sounds or not to be displayed on the display device on a keyboard at the time of simultaneously producing the performance sounds and the additive sounds by automatic performance processing. CONSTITUTION:A memory means 12b stores the performance sound data generated by actual operations and the additive sound data consisting of the pitch different from the pitch of the performance sounds. A performance control means 15 reads the performance sound data and the additive sound data successively out of the memory means 12b and automatically executes desired performance by subjecting the performance sounds and additive sounds of the corresponding pitch to sound production processing. A performance display means displays the keyboard 16 corresponding to the pitch of at least either of the performance sounds and the additive sounds in such a manner that this keyboard 16 can be visually recognized while the performance control means 15 produces the performance sounds and the additive sounds. The keyboard 16 corresponding to the pitch of the performance sounds by the actual key touch operations among the sounds currently under production by the performance control means 15 or the additive sounds added afterward can easily be recognized in this way and the keyboard 16 corresponding to the pitch currently under production can be easily recognized. |
