The cry of an object infant is acquired in procedure 1, and the cry is converted into time-series data on a sound feature parameter by sound feature analysis (procedure 2). From the time-series data, an affect sound model held in advance in a database (X), and segment occurrence information held in advance in a database (Y), the affect giving the highest general similarity is determined, and it is judged that it is the affect of the infant (procedure 3). The affect sound model held in the database (X) is made by converting the cry of an infant having a predetermined affect into time-series data on a sound feature parameter by sound feature analysis, and by subjecting the sound feature parameter of each affect to appearance distribution learning processing (procedure X1 to X3). The segment occurrence information held in the database(Y) is created by dividing the cry of the infant having a predetermined affect into sound feature segments according to the sound feature, labeling them to convert them into sound feature segment-series data, and subjecting them to occurrence order learning processing for each affect (procedure Y1, Y2). The invention provides a method for accurately judging the affect of an infant on the basis of the voice uttered by the infant and a device and computer program for executing the method.
INFANT EMOTION JUDGING METHOD, AND DEVICE AND PROGRAM THEREFOR