1. An interesting section extracting device for extracting an interesting section interesting to a user from a video file with reference to an audio signal included in the video file such that a specified time is included in the interesting section, the interesting section extracting device comprising: an anchor model storage unit storing anchor models that respectively represent features of a plurality of types of sound pieces; a specified time obtaining unit configured to obtain the specified time; a likelihood vector generating unit configured to calculate likelihoods for feature vectors that represent features of the audio signal, in one-to-one correspondence with unit sections of the audio signal by using the anchor models, and generate likelihood vectors having the calculated likelihoods as components thereof; and an interesting section extracting unit configured to calculate a candidate section, which is a candidate for the interesting section to be extracted from the video file, by using the likelihood vectors and extract, as the interesting section, a part or a whole of the candidate section including the specified time.