基于Nios Ⅱ的语音加密传输系统设计  

Design of voice encryption transmission system based on Nios Ⅱ

作　　者：严迎建[1] 任方[1] 付小兵[1] 王志新[1] 

机构地区：[1]信息工程大学电子技术学院,河南郑州450004

出　　处：《电子技术应用》2009年第9期61-64,69,共5页Application of Electronic Technique

摘　　要：设计并实现了一个基于Nios Ⅱ的语音加密传输系统。介绍了进行语音信号处理的功能模块,包括语音采集回放模块、基于G.729A的语音压缩与解压缩模块和基于AES的数据加解密模块。在控制模块的协调下,使得语音数据通过MODEM能够在公共电话网中安全地传输,实现了语音的保密通信。A voice encryption transmission system is designed based on Nios Ⅱ. The function modules process voice signals is introduced in detail, including voice sampling and playing module, voice compression and decompression module based on G.729 and data encryption and decryption module based on AES. With the harmonizing of the control module, voice is able to transmission safely across the PSTN using MODEM. So it can realize the function of secure transmission of voice.

关 键 词：NiosⅡ 语音加密 G.729A AES 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]