H. P. Singh and S. Singh
Computationally Efficient Signal Quality Improvement Method for VoIP System
1345 - 1350
2012
6
11
International Journal of Electronics and Communication Engineering
https://publications.waset.org/pdf/6730
https://publications.waset.org/vol/71
World Academy of Science, Engineering and Technology
The voice signal in Voice over Internet protocol (VoIP) system is processed through the best effort policy based IP network, which leads to the network degradations including delay, packet loss jitter. The work in this paper presents the implementation of finite impulse response (FIR) filter for voice quality improvement in the VoIP system through distributed arithmetic (DA) algorithm. The VoIP simulations are conducted with AMRNB 6.70 kbps and G.729a speech coders at different packet loss rates and the performance of the enhanced VoIP signal is evaluated using the perceptual evaluation of speech quality (PESQ) measurement for narrowband signal. The results show reduction in the computational complexity in the system and significant improvement in the quality of the VoIP voice signal.
Open Science Index 71, 2012