Accuracy of automatic speaker recognition for telephone speech signal quality

This paper was performed by examining the accuracy of speaker identification on telephone quality voice signals. Speaker recognizer was implemented using HTK. Influence of the considered telephone channels on transmitted voice signal is seen through its basic characteristics, types of the applied codecs and the effects caused by the condition of the transmission channel. These effects were observed by a factor of transmission error probability, while the VoIP telephone channels were analyzed and the appearance of echo. Simulation of the appropriate codecs and the probability of various errors made during transmission by using publicly available library of software tools, ITU-T STL2005, while the echo phenomenon was simulated using effect Delay / Echo-Simple suite Sony Sound Forge 9.0.