| 摘要 |
PROBLEM TO BE SOLVED: To convert an analog acoustic signal to MIDI (musical instrument digital interface) codes being suitable for displaying a musical score and reproducing a sound source. SOLUTION: An original sound waveform is inputted as digital data by an acoustic data input means 10. Parameters for display and parameters for reproduction are prepared in a parameter setting means 30, an encoding processing means 20 generates a code train for display having low temporal density and a code train for reproduction having high temporal density using these parameters, these code trains are divided into each MIDI track and outputted to a recording medium 50 by a code train output means 40. A display reproduction device 60 performs musical score display using a code train for display, and performs sound source reproduction using a code train for reproduction. When edition for a code train for display in performed by a code editing means 70, equal edition is performed automatically also for a code train for reproduction, and consistency is kept. |
