DEVICE, METHOD, AND PROGRAM FOR PROCESSING SOUND SIGNAL

摘要

PROBLEM TO BE SOLVED: To provide a device for processing sound signals capable of making a decision on an expression of a performance which is highly consistent and guaranteed to be the best. SOLUTION: A plurality of expression modes of a song are modeled as respective states, the probability that a section including a frame or a plurality of continuous frames lies in a specific state is calculated with respect to a prescribed observed section based on the characteristic parameters obtained by dividing the sound signals at intervals of 25 ms, and the optimum route of state transition in the prescribed observed section is determined based on the calculated probabilities to decide expression modes of the sound signals and sections thereof. COPYRIGHT: (C)2007,JPO&INPIT