| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic music box which can reproduce music fitted into usage environment with a simple structure.MEANS FOR SOLVING THE PROBLEM: A reproduction group of pieces of music to be targeted is selected from a music data storage part which stores pitch and timing of a plurality of pieces of music, and reproduction order in the group is automatically determined on the basis of a previously stored random number. A new piece of music is weighted so as to have high reproduction frequency. A piece of music reproduced a predetermined number of times is replaced from the reproduction group on the basis of the random number. The reproduction group is configured by pieces of music with similar tempo or beat, and tempo of the pieces of music is revised and standardized so as to correspond to continuous lulling movement for rocking a baby. The timing of a music signal is given 1/f fluctuation using information where a start point of previously stored 1/f fluctuation data is changed by a random number. Ritardando and rubato with the 1/f fluctuation are applied to the timing of the music signal. An attenuated audio signal given the 1/f fluctuation is coupled with the pitch of the music signal and syllabic nasal start timing data.SELECTED DRAWING: Figure 1 |
