Patent ID: 8380494

Claim:
A method of reducing total bandwidth requirement in voice communication using packet transmission, said method comprising the steps of: sampling audio signals and converting said sampled audio signals into sampled digital signals of frames; computing spacings of order statistics of said frames and deriving the entropy of each of the frames; setting a threshold for a first set of frames derived from said entropy of said first set of frames, wherein said first set of frames comprises two or more frames, and setting the threshold of a second set of frames that is subsequent to said first set of frames to be equal to the threshold of the first set of frames plus an increment, wherein said second set of frames comprises one or more frames; recalculating the threshold if there is a change in one of x max and x min , wherein x max is set equal to the maximum entropy attained up to a current frame, wherein the x min is set equal to the x max if the current frame is marked as an inactive speech frame, and wherein the x min is set equal to the minimum entropy observed up to the current frame in a contiguous set of exclusively active speech frames in said second set of frames if the current frame is marked as an active speech frame; marking the second set of frames, wherein the step of marking comprises marking the second set of frames as inactive speech frames when the entropy of the second set of frames is greater than the threshold of the first set of frames, and marking the subsequent frames as active speech frames when the entropy of the subsequent frames is lesser than the threshold of the first set of frames; and transmitting only the active speech frames.