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Delay, jitter and packet loss significantly degrade the speech quality in VoIP applications, especially in VoWLAN. In order to solve this problem, different jitter buffer and error concealment techniques are introduced. In this paper, we propose a new simple but effective error concealment method for VoIP, which uses the contour tendency of the last two packets to predict and recover the current packet...
Speech quality evaluation is a very important research topic. In addition, the real time property of packet-switched network (e.g., the Internet) applications requires a fast and effective audio quality evaluation method. Mean opinion score (MOS) is reliable, but the listening test is very expensive, time-consuming, and sometimes impractical. The existing objective quality assessment methods require...
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