| 摘要 |
PROBLEM TO BE SOLVED: To make watermark information in MADI data so that the MIDI data can not be easily removed without being destructed and the quality of the MIDI data is not lost. SOLUTION: The watermark information processor is constituted of an event extracting means 4 for extracting continuous pitch bending events from MIDI data 1, a watermark information dividing means 5 for dividing watermark information 2, a watermark information padding means 6 for making the information 2 in respective relative time intervals generated by respective events, a resampling means 7 for resampling respective events so that the timewise transition of respective events is the same as that obtained before making the information 2 based on respective relative time intervals supplied from the means 6 and including the watermark information 2, and an event changing means 8 for substituting respective events of the original. MIDI data 1 for respective events outputted from the means 7 and outputting the converted MIDI data 3. |
