嵌入式数字语音处理实验系统的设计与实现  

Design and Implementation of an Embedded Digital Audio Processing System

作　　者：伍技祥[1,2] 仲元昌[2] 李彩玲[2] 李飞[2] 

机构地区：[1]重庆工商职业学院计算机与电子工程系,重庆400052 [2]重庆大学通信工程学院,重庆400044

出　　处：《实验室研究与探索》2012年第10期46-49,共4页Research and Exploration In Laboratory

基　　金：国家创新基金项目(10C26215113031);第四届国家大学生创新性实验计划项目(101061118)

摘　　要：提出了智能化和微型化的设计理念,并充分考虑其系统的可扩展性,采用多媒体SoC微处理器Z228为核心单元,结合专用的立体声音频处理器AK4643,构建了嵌入式数字语音处理系统模型。基于该模型设计并研制了一种智能化程度高、微功耗、体积小、重量轻的嵌入式数字语音处理系统。理论分析和实验结果表明:该系统能高保真地完成语音处理,提高了便携式语音设备的整体性能。该系统已应用于便携式电子导游系统,也可推广应用于其他便携式语音设备及音视频监控系统。The design concept of inteiligentization and miniaturization was proposed and a model of embedded digital voice processing systems was constructed by taking into considering the scalability of the system, adopting Z228 multimedia SoC microprocessor as the core module, and combining with a dedicated stereo audio processor AK4643. Based on the model designed, a small-size, and light-weight embedded digital voice processing systems with a high degree of intelligence, and micro-power consumption was developed. Theoretical analysis and experimental results show that the system can complete high-fidelity audio processing, improve the overall performance of portable audio devices. The system has been used in portable electronic tour guide system. However, it can also be applied to other portable audio devices and audio ＆ video surveillance systems.

关 键 词：数字语音处理 音频格式 便携式语音设备 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]