Advances in voice quality measurement in modern telecommunications
Digital Signal Processing
Speech bandwith requirements in IPsec and TLS environment
ICCOMP'09 Proceedings of the WSEAES 13th international conference on Computers
Speech quality evaluation in IPsec environment
ICNVS'10 Proceedings of the 12th international conference on Networking, VLSI and signal processing
Real-time applications on virtualized machines
ACC'11/MMACTEE'11 Proceedings of the 13th IASME/WSEAS international conference on Mathematical Methods and Computational Techniques in Electrical Engineering conference on Applied Computing
Automated speech quality monitoring tool based on perceptual evaluation
WORLD-EDU'12/CIT'12 Proceedings of the 6th international conference on Communications and Information Technology, and Proceedings of the 3rd World conference on Education and Educational Technologies
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Speech quality evaluation is one of the fundamental aspects of telecommunications which has been frequently discussed since the inception of Internet telephony. Voice services providers should ensure adequate connection quality to end users. Using speech quality evaluation, they try to identify possible issues and to prevent service quality degradation as early as when the network is being designed. This article focuses on a non-intrusive method of speech quality evaluation in accordance with ITU-T recommendation G.107, known as the E-model. Real measurements that were carried out depending on codec tandeming in the communication system and causing the packet loss in IP telephony differed from results obtained using the PESQ method. This lead the authors to carry out an experiment in which the given scenario would be measured, its results assessed and a correction function that would fine-tune the E-model for tandeming was drafted.