Adaptive delay concealment for Internet voice applications with packet-based time-scale modification

Fang Liu; JongWon Kim; C.-C. Jay Kuo

doi:10.1117/12.420809

22 March 2001 Adaptive delay concealment for Internet voice applications with packet-based time-scale modification

Fang Liu, JongWon Kim, C.-C. Jay Kuo

Proceedings Volume 4209, Multimedia Systems and Applications III; (2001) https://doi.org/10.1117/12.420809
Event: Information Technologies 2000, 2000, Boston, MA, United States

Abstract

For Internet audio applications, much effort has been involved in packet-level error control and delay jitter concealment. In this paper, a packet-based time-scale modification scheme for speech signal is applied to provide adaptive delay concealment at the receiver of an Internet voice session. The adaptive playout algorithm strives to minimize receiver packet droppings for late-arrival packets and premature packets while keeping the end-to-end delay constrained. By stretching the voice segment up/down and incorporating the silence interval, the proposed algorithm could adapt quickly to accommodate fluctuating delays including delay spikes. The evaluation verifies the performance of the proposed adaptive playout, which improves the received speech intelligence under a tightly bounded average playout delay.

Citation Download Citation

Fang Liu, JongWon Kim, and C.-C. Jay Kuo "Adaptive delay concealment for Internet voice applications with packet-based time-scale modification", Proc. SPIE 4209, Multimedia Systems and Applications III, (22 March 2001); https://doi.org/10.1117/12.420809

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