| 摘要 |
PROBLEM TO BE SOLVED: To provide a performance method of music data and a music performance device capable of easily varying a performance speed. SOLUTION: The performance data on a piece of music and time information showing performance time are stored in a memory part (ST11). A tempo input key is operated for measuring the beat of the music and a time interval and setting the performance speed from a mean time (ST12). The data and the information are read out (ST13), and when the time interval until the next key operation does not satisfy ST15 and ST16 (ST14), the time information is processed so as to become the set performance speed (ST18), and the data are supplied to a sound source part at the timing of this information, and a musical signal is generated. The key operation satisfied ST15 is made invalid, and when satisfying ST16, the mean time is calculated newly, and the performance speed is reset. When the key operation does not exist, and ST30 is satisfied, the advance of the performance is stopped (ST31). The processing from ST13 is repeated until the output of the data in a memory are finished. Only by changing the time interval by the operation by the tempo input key, the performance speed is varied easily. |
