CELP compressed algorithms (e.g., G729, G723, GSM, etc.) are pervasively used in the emerging VoIP phone calls. It is desired (e.g., for security reason) in many VoIP applications to identify the speaker. This paper investigates an innovative scalable approach to achieve the speaker ID directly from the compressed voice packets. A set of feature vector is first identified and grouped from the compressed voice stream, and then fast clustering mechanism is employed to classify the voice packets for real time speaker identification.
By: Charu Aggarwal, David Olshefski, Debanjan Saha, Zon-Yin Shae, Philip S. Yu
Published in: RC23499 in 2005
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