Abstract—In this paper the latest development G.729 which is an audio data compression algorithm has been analyzed and implemented to save a noticeable bandwidth. Different effects of AnnexB=yes and AnnexB=no has been observed in the G.729 codec which has the standard bandwidth of 8 kbps. As most of the internet subscribers of Asian countries use very low internet bandwidth 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 6kbps where this codec uses at least 6.4kbps. In a real life environment it is tested practically that it is possible to transmit voice satisfactorily using less than 6.4 kbps by changing some parameter described in this paper.
Index Terms—G.729 codec, AnnexB=yes, AnnexB=no, RTP (real-time transport protocol), VAD (voice activity detector).
N. A. Shafi is with the Zamir Telecom Limited, 4-6 Davenant Street, Unit # A, London E1 5NB, England (e-mail: nahid_apee@yahoo.com).
O. Farrok is with the Department of Electrical and Electronic Engineering, Ahsanullah University of Science and Technology (AUST), Dhaka-1208, Bangladesh (e-mail: omarruet@gmail.com).
M. M. Ali is with the Department of Electrical and Electronic Engineering, Rajshahi University of Engineering and Technology (RUET), Rajshahi-6204, Bangladesh (e-mail: mmali.ruet@gmail.com).
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Cite:N. A. Shafi, O. Farrok, and M. M. Ali, "An Analysis of VoIP Communication and Overview of Bangladesh Practical Field," International Journal of Computer Theory and Engineering vol. 5, no. 3, pp. 574-577, 2013.
