Modification of Two-Side Pitch Waveform Replication Technique for VoIP Packet Loss Concealment(Network)

概要

論文の詳細を見る
Speech quality of VoIP (Voice over Internet Protocol) may potentially be degraded by transmission errors such as packet loss and delay which are basically inevitable in best- effort communications. This study investigates an error concealment technique for such degradation by using a receiver-based technique called pitch wave form replication. For enhancing the conventional technique, this study proposes a wave form reconstruction technique that also takes account of the pitch variation between the backward and forward frames of gap frames. From experimental results of objective evaluation, it is indicated that the proposed technique may potentially be useful for improving the speech quality, compared with the conventional technique.
社団法人電子情報通信学会の論文
2004-04-01