Performance comparison between VBR speech coders for adaptive VoIP applications

被引：4

作者：

Beritelli, F ^{[1
]}

Casale, S ^{[1
]}

Ruggeri, G ^{[1
]}

机构：

[1] Univ Catania, Dipartimento Ingn Informat & Telecomunicaz, I-95125 Catania, Italy

来源：

IEEE COMMUNICATIONS LETTERS | 2001年 / 5卷 / 10期

关键词：

IP telephony; rate control; VBR speech coding;

D O I：

10.1109/4234.957382

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

The recent introduction of new variable bit rate (VBR) speech coders has opened up new perspectives for the implementation of Adaptive Voice over IP (AVoIP) systems. The paper compares different VBR speech coding techniques in scenario in which the rate of the single sources is dynamically adapted to the workload conditions. The coders compared are the AMR, the M-3 R and the G.729. Using source and rate control mechanism models, performance was evaluated in terms of loss probability, offered throughput and mean CMOS with varying numbers of sources. The use of header compression mechanisms was also evaluated.

引用

页码：423 / 425

页数：3