The method includes analyzing digitized communication input signals by current blocks of 20ms, to define {TAIL ~ the stationary or non stationary state} of {HEAD ~ any current block} 
The method includes analyzing digitized communication input signals by current blocks of 20ms , to define { TAIL ~ the stationary or non stationary state } of { HEAD ~ any current block }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD