—In VoIP applications, packet loss causes a major
impact on perceived speech quality. This impact is affected by
some factors like packet loss locations, loss size and loss pattern.
In this paper, we have investigated using perceptual-based
objective measurement methods the impact on loss location on
perceived speech quality and the relationships between
convergence time and loss location for two different codecs
(G.729 and G.723). Experimental result shows that loss location
has a severe effect on perceived speech quality. The convergence
time rely on the speech content e.g. voiced/unvoiced. In terms of
unvoiced segments, the convergence time is stable as in voiced
phases it varies. But it associate degree bound at the top of the
segment. Our method allows a more accurate measurement of
the exact effect of packet loss on perceived speech quality. As
most of the internet subscribers of Asian countries use very low
internet bandwidth. Hence, the goal of this analysis is to
propose to change some parameters of this system so that the
quality of voice may be kept in a tolerable limit using only 5kbps
to 5.5kbps where this codec uses at least 6.4kbps. In a real life
environment it is tested practically in research that it is possible
to transmit voice satisfactorily using 5.3 kbps by changing some
parameter described in this paper.
—G.723, G.729, annexb = no, RTP, UDP.
N. A. Shafi is with the Network Operations Center of Inspire Systems
Limited in Dhaka, Bangladesh (e-mail: firstname.lastname@example.org).
Al Kawser is with the Network Operations Center of Inspire Systems
Limited in Dhaka, Bangladesh (e-mail: email@example.com).
O. Farrok is with the Department of Electrical and Electronic
Engineering, Ahsanullah University of Science and Technology (AUST)
Cite:N. A. Shafi, Al Kawser, and O. Farrok, "Practical Field Overview Voice Quality of RTP Packet Size Analyze on Codec G729 Annexb = no in Low Bandwidth Area of Bangladesh," International Journal of Computer Theory and Engineering vol. 7, no. 1, pp. 62-65, 2015.