Performance analysis of the network communication based on AMR speech coding by using NS

JIA Long-tao; BAO Chang-chun

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Performance analysis of the network communication based on AMR speech coding by using NS

更新时间：2024-10-14

- Performance analysis of the network communication based on AMR speech coding by using NS
- Issue 6, Pages: 121-125(2006)
- 作者机构：
  
  1. 北京工业大学电子信息与控制工程学院
  2. 北京工业大学电子信息与控制工程学院,北京,100022
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN912.3
- Published：2006
- 稿件说明：
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JIA Long-tao, BAO Chang-chun. Performance analysis of the network communication based on AMR speech coding by using NS[J]. 2006, (6): 121-125.
DOI：

JIA Long-tao, BAO Chang-chun. Performance analysis of the network communication based on AMR speech coding by using NS[J]. 2006, (6): 121-125. DOI：

摘要

目前

几乎所有的语音电话系统(VoIP)都采用固定速率传输

这使得网络丢包

特别是连续丢包无法避免

因此导致了严重的语音质量下降。针对这一问题

给出了一种新的抗分组丢失的网络语音通信系统

并用网络仿真软件NS(networksimulator)对该系统进行了性能分析

仿真实验证明

所提出的网络语音通信系统在网络丢包、平均延迟和主观听觉方面明显优于传统的IP语音电话系统。

Abstract

Most of the VoIP systems were based on the speech codec with a fixed rate

which maked packet-loss serious

especially for continuous packet-loss.The degradation for the speech quality would be caused by the kind of packet-loss.A network communication system for preventing packet-loss was given.The performance of the system was analyzed by using advanced NS.The simulation results show that the proposed system outperforms traditional IP system over the packet-loss

average delay and subjective listening quality.

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Waveform interpolation speech coding algorithm at 2.4kbit/s based on wavelet transform

Frame erasure concealment method used for wideband embedded speech codec

8～64kbit/s super-wideband embedded speech and audio coding algorithm

Improved embedded wideband speech codec fitting EV-VBR standard

Related Author

WANG Jing

KUANG Jing-ming

XIE Xiang

ZHU Heng

BAO Chang-chun

LI Rui

JIA Mao-shen

XIN Jie

Related Institution

Department of Electronic Engineering,Beijing Institute of Technology

北京理工大学电子工程系

Speech and Audio Signal Processing Lab,School of Electronic Information and Control Engineering,Beijing University of Technology

北京工业大学电子信息与控制工程学院语音与音频信号处理研究室

Speech and Audio Signal Processing Lab,School of Electronic Information and Control Engineering,Beijing University of Technology

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