| 摘要 |
PROBLEM TO BE SOLVED: To accurately match even two phrases and to match even transposition and the pitch of a phrase relatively accurately. SOLUTION: A matching source phrase is divided into steps of specific unit length (step S1). A matching object phrase is divided into steps of specific unit length (step S2). The starting measure lines of the matching source phrase and matching object phrase are matched with each other and both the steps in the same timing from the measure lines of both the phrases are made to correspond to each other (step S3). Intervals (pitch difference) of notes of both the phrases in the respective steps made to correspond to each other are found and the numbers of groups of steps having the same intervals as to the intervals obtained in all the steps are summed up (totaled) by the intervals (step S4). The rate of the total value of the interval having the maximum total value to the whole is found as a degree of matching (step S5). The degree of matching is compared with a threshold to decide a matching, similar, or non-similar state. |
