Today,digital audio applications are part of our every dayl ives.Popular examples include audio CDs, MP3 audio players, radio broadcasts, TV or video DVDs, video games, digital cameras with sound track, digital camcorders, telephones, telephone answering machines and telephone enquiries using speech or word recognition. Various new and advanced audiovisual applications and services become possible based on audio content analysis and description. Search engines or specific filters can use the extracted description to help users navigate or browse through large collections of data. Digital analysis may discriminate whether an audio file contains speech, music or other audio entities, how many speakers are contained in a speech segment, what gender they are and even which persons are speaking. Spoken content may be identified and converted to text.