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.
出处
《电子技术应用》
北大核心
2009年第9期61-64,69,共5页
Application of Electronic Technique
