A Matching Method between Music Scores and Performance Data in a Realtime Person-Computer Ensemble System

摘要

A person-computer ensemble system is one of time-concerned cooperative systems, which performs secondo (the second part) in an en semble played by a computer-controlled piano cooperating with primo (the leading part) played by a person performer. In the realtime performance, to determine which key is touched, or played, by the person performer, the matching algorithm between the score and the realtime input from the person performer is essential. Especially, if there are some mistouches (playing incorrectly) or other mistake, error, etc., the program does not determine which note is per formed just now and which note of the secondo will be done just after now. Therefore, the matching method that corrects these mistouches is very important. In this paper, a simple and efficient matching algorithm is proposed.