Robust Speaker Verification Based on Multi Stage Vector Quantization of MFCC Parameters on Narrow Bandwidth Channels

This paper presents a very low bit rate and robust client-server-based speaker verification system using MFCC parameters. Two aspects are proposed and assessed including very low bit rate transmission of test utterance feature vectors from client to server, and robust speaker verification in situations where training and test environment noise conditions including noise types and SNRs are different and unknown for speaker verification system. Very low bit rate transmission of feature vectors are achieved using Multi Stage Vector Quantization technique (MSVQ).