6. A method according to claim 4 , further comprising segmenting the audio stream into the windows.
6. A method according to claim 4 , further comprising segmenting the audio stream into the windows. 7. A method according to claim 6 , further comprising: digitizing the audio stream to obtain a digitized audio stream; and dividing the digitized audio stream into digitized blocks; wherein the step of dividing is performed prior to the step of segmenting and the step of segmenting comprises a step of segmenting the digitized blocks.