INFORMATION GENERATION APPARATUS, INFORMATION GENERATION METHOD AND INFORMATION GENERATION PROGRAM

摘要

To improve detection rate of types of musical instruments as compared with conventional methods by improving detection accuracy of sound producing positions within a musical composition. A sound-producing-position detection section (3) is provided, which uses a detection threshold value that is variable according to a speed (tempo) of a musical composition in order to detect a sound producing position of a musical instrument which plays the musical composition, by using a difference value of a residual power value obtained as a result of an LPC analysis over a musical composition data (Sin) which corresponds to the musical composition.