基于DSP的VoIP路由器用户板的设计与实现  

Design and realization of User Board in VoIP router based on DSP

作　　者：宋道元[1] 王永灵[1] 王进军[1] 黄本雄[1] 

机构地区：[1]武汉华中科技大学电子信息与工程系,430074

出　　处：《微计算机信息》2003年第3期55-57,共3页Control & Automation

摘　　要：介绍了一种基于DSP的VoIP路由器用户板的设计.包括音频处理、语音编解码、回声抵消、信令音的产生与检测等功能。采用TI公司的低功耗定点数字信号处理器TMS320VC5402作为语音编解码器。实现了ITU-TG.723.1的全部功能和回声抵消功能。本文讲述用户板的硬件结构和工作流程。A user interface board implementation in VoIP router based on DSP is presented in this paper. This board includes some functions, such as audio processing, voice CODEC, echo canceller, signaling generating and detecting and etc. Its core is TMS320VC5402 in charge of voice CODEC, which has fulfilled all functions of ITU-T G.723.1 and the echo canceller function. Some details of hardware design and processing procedure are discussed in this paper.

关 键 词：DSP VOIP 路由器 用户板 设计 网络电话 语音通信 

分 类 号：TN916.1[电子电信—通信与信息系统] TN915.05[电子电信—信息与通信工程]