32 bit RISC MPU+16 bit DSP英语学习机的系统设计  

System Design on 32 bit RISC MPU+16 bit DSP English Learning Machine

作　　者：黄鹏[1] 董明[1] 梁维谦[1] 刘润生[1] 

机构地区：[1]清华大学电子工程系信息科学与技术国家实验室,北京100084

出　　处：《电声技术》2008年第8期18-21,共4页Audio Engineering

摘　　要：介绍了实现具有发音评测功能的嵌入式英语学习机的软硬件系统设计。系统硬件上采用32 bit RISC MPU:S3C44B0X+16bit DSP:UniLite的结构,使该系统具有低成本、高性能的优势。软件平台采用μC/OS-II+μC/GUI,使该学习机具有较好的人机交互性和应用扩展性。采用基于CHMM的模型算法以实现发音评测功能。A measure pronunciation function of embedded hardware and software for English language learning system design is proposed. The structure of 32 bit RISC MPU：S3C44BOX ＋16 bit DSP：UniLite is used as system hardware, so that the system has low-cost, high-performance advantages. The μC/OS-Ⅱ＋μC/GUI is used as software platform, so that the learning machine has good human-computer interaction and application scalability. CHMM based on the model algorithm is used to achieve the pronunciation evaluation function.

关 键 词：英语学习机 数字信号处理 CHMM Unilite 

分 类 号：TN912[电子电信—通信与信息系统]