Sound detection equipment, sound detection method, the sound feature quantity detecting device, the sound feature quantity detection method, sound segment detection device, sound interval detection method and program

摘要

There is provided a sound detecting apparatus including: a feature value extracting unit which extracts a feature value per every predetermined time from an input time signal; a feature value maintaining unit which maintains a feature value sequence of a predetermined number of detection target sound items; and a comparison unit which respectively compares a feature value sequence extracted by the feature value extracting unit with a feature value sequence of the maintained predetermined number of detecting target sound items and obtains detection results of the predetermined number of detection target sound items every time the feature value extracting unit newly extracts a feature value, wherein the feature value extracting unit includes a time frequency transform unit and a likelihood distribution detecting unit, smooths the obtained likelihood distribution in frequency and time directions, and extracts a feature value per the predetermined time.