AUTOMATIC SCORE TAKING METHOD AND APPARATUS

摘要

PURPOSE:To prevent that segmentation is performed by error by a noise component, by dividing a section wherein power data is larger than a threshold value into small sections and finely dividing the large section at the rising change point of power data. CONSTITUTION:A CPU 1 divides a section wherein the power data of an acoustic signal at an analytical point is below a threshold value and a section wherein said power data is the threshold value or more. Next, the CPU 1 applies start and finish marks to the first and last of the section equal to or more than the threshold value and subsequently calculates the change function of power in the section wherein power data is the threshold value or more and then extracts the rising changing point of power on the basis of the calculated change function to finely divide the section equal to or more than the threshold value. By this method, it can be prevented that segmentation is performed erroneously by a noise component and processing on and after such as intervale identification processing can be well executed.