| 摘要 |
PROBLEM TO BE SOLVED: To provide an attack time detecting device of low cost, a short processing time, and good detecting accuracy. SOLUTION: This attack time detecting device is constituted so that it is provided with an acoustic signal data storing means 2 storing the acoustic signal data of a musical composition, a predictive residual computing means 3 computing predictive residual from the acoustic signal data of the musical composition by a linear prediction method, and a judging means 4 judging the local peak of predictive residual or the local peak of the time variation quantity of predictive residual so as to set the time as the attack time. Hereby, the attack time of good detecting accuracy is obtained in a short time. |
