1. A method of classifying a homogeneous audio segment comprising a sequence of audio samples, said method comprising the steps of: forming a sequence of frames along said sequence of audio samples, each said frame comprising a plurality of said audio samples; dividing said segment into a plurality of audio clips, each audio clip being associated with a plurality of said frames; extracting for each frame at least one frame feature; extracting for each audio clip a clip feature vector from frame features of frames associated with said audio clip; and classifying said segment based on a continuous action defining the distribution of said clip feature vectors.