Model for speech signal quality estimation in packet network of electricity supply industry

• Main Authors: Lebl Aleksandar, Mitić Dragan, Matić Vladimir, Markov Žarko
• Format: Article
• Language: English
• Published: Faculty of Technical Sciences in Cacak 2019-01-01
• Series: Serbian Journal of Electrical Engineering
• Subjects: delay effects; electricity supply industry; internet telephony; power system transients; quality of service
• Online Access: http://www.doiserbia.nb.rs/img/doi/1451-4869/2019/1451-48691903405L.pdf
• ISSN: 1451-4869; 2217-7183

In this paper we present the dilemma dealing with the choice of speech segment duration and the calculation of speech signal quality in the packet telephone network of Electricity supply industry (ESI). The analyzed signal is packetized by one packet. The characteristic of this network is that disturbances of long duration in power system produce burst packet loss. The longer speech segments increase the packet delay, but decrease the number of lost packets in one burst, and vice versa. Here we present why it is better to choose speech segments of short duration. Also, we suggest the corrected method for the calculation of speech signal quality in packet network under the influence of long duration disturbances. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. TR32007 and Grant no. TR32051]