DETECTOR, DETECTION PROGRAM AND DETECTION METHOD

摘要

PROBLEM TO BE SOLVED: To suppress decline of accuracy in results of detection of a mental state.SOLUTION: A detector 10 obtains voice data of an utterer. The detector 10 computes a basic frequency of voice, and indexes which can evaluate the flatness of spectra indicating high-pass frequency components of voice from the obtained voice data. The detector 10 computes sets of the basic frequency and the indexes by using a "2 mass model of vocal cords" using various parameters. The detector 10 determines parameter values used in computing a set of feature quantities with the minimum difference in feature quantities among sets of feature quantities. The detector 10 detects the mental state of the utterer by using the determined parameters.