基于UDA1341和FM1182的嵌入式语音网络传输系统设计  

Design of embedded audio network transmission systems based on UDA1341 and FM1182

作　　者：孙锐[1] 徐骏[1] 李景[1] 张红星[1] 凌强[1] 王嵩[1] 

机构地区：[1]中国科学技术大学信息学院,安徽合肥230027

出　　处：《微型机与应用》2012年第2期18-21,24,共5页Microcomputer & Its Applications

基　　金：国家自然科学基金(60904012);新世纪优秀人才项目(NCET-10-0917)资助

摘　　要：针对当前语音网络传输系统中存在的环境噪声、回波、设备工作不稳定等问题,提出了一种新型的嵌入式语音网络传输系统设计方案。该系统以ARM9嵌入式处理器S3C2410为核心,ARM Linux为实时操作系统,CS8900为网络传输芯片,UDA1341为音频编解码芯片,使用了一种新型的芯片FM1182进行语音处理,能够很好地实现噪声抑制和回波抵消。给出了相关硬件的电路设计方案,同时介绍了软件实现流程,并详细介绍了语音缓冲区的算法。To solve the problem of ambient noise, echo, and equipment instability in current audio network transmission systems, a new embedded audio network transmission system was designed. This system is based on ARM9 embedded processor S3C2410, ARM Linux operation system, CS8900 network chip, UDA1341 CODEC and uses a new chip FMl182 for voice processing which serves to do noise suppression and echo cancellation. The relevant hardware circuits and the software implementation process were shown while a key voice buffer algorithm to improve the audio quality was introduced.

关 键 词：嵌入式系统 UDA1341 FM1182 语音传输 多线程 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]