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http://dx.doi.org/10.7776/ASK.2014.33.1.075

Packet Loss Concealment Algorithm Based on Robust Voice Classification in Noise Environment  

Kim, Hyoung-Gook (광운대학교 전파공학과)
Ryu, Sang-Hyeon (광운대학교 전파공학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.33, no.1, 2014 , pp. 75-80 More about this Journal
Abstract
The quality of real-time Voice over Internet Protocol (VoIP) network is affected by network impariments such as delays, jitters, and packet loss. This paper proposes a packet loss concealment algorithm based on voice classification for enhancing VoIP speech quality. In the proposed method, arriving packets are classified by an adaptive thresholding approach based on the analysis of multiple features of short signal segments. The excellent classification results are used in the packet loss concealment. Additionally, linear prediction-based packet loss concealment delivers high voice quality by alleviating the metallic artifacts due to concealing consecutive packet loss or recovering lost packet.
Keywords
VoIP; Packet loss concealment; Voice classification; Adaptive thresholding approach;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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