A protocol for a musical session in a sound field where synchronization between musical notes is not guaranteed

摘要

Recently, two-way application systems on the Internet have become increasingly popular. When a musical session is performed via the network, it is necessary to interact in real time; however, there is the problem of delay, and the time lag between the musical notes may become an impediment. For this problem, we propose a new protocol for a musical session called Mutual Anticipated Session (M.A.S.), which is a type of ensemble that controls the timing of the sounds and composes music like in a canon-like style. In the M.A.S., one player's performance precedes the other players', so we call this performance "precedent musical performance", and within the precedent musical performance, we call the time lapse between the players' performance "precedent time." The remote ensemble system is constructed by using M.A.S, and we investigate the usability of the M.A.S. system and the suitability of the precedent time.