基于单片机的语音识别系统

目 录
摘要.............................................................................................................................................1 关键词.........................................................................................................................................1 Abstract.....................................................................................................................................1 Key words...................................................................................................................................1 引言..............................................................................................................................ቤተ መጻሕፍቲ ባይዱ..............2 1 语音识别概念.......................................................................................................................2 1.1 语音识别概述...................................................................................................................2 1．1．1 语音识别系统...........................................................................................................2 1．1．2 语音识别的步骤.......................................................................................................2 1．1．3 语音识别的原理.......................................................................................................3 2 核心微处理器的论述...........................................................................................................3 2．1 芯片的选择.....................................................................................................................3 2．1．1 SPCE061A 芯片特性简介..........................................................................................3 2．1．2 SPCE061A 指令系统..................................................................................................4 2．2 SPCE061A 单片机强大的语音功能................................................................................4 2．2．1 凌阳音频处理过程...................................................................................................4 3 系统硬件电路构成...............................................................................................................5 3．1 系统架构.........................................................................................................................5 3．2 系统主控制器.................................................................................................................6 3．3 话筒录音输入及 AGC 电路.............................................................................................6 3．4 硬件系统工作过程.........................................................................................................7 4 系统软件设计.......................................................................................................................8 4．1 系统软件结构.................................................................................................................8 4．2 主程序流程.....................................................................................................................8 4．2．1 主程序流程图...........................................................................................................8 4．2．2 A/D 转换....................................................................................................................9 4．2．3 数字滤波...................................................................................................................9 4．2．4 端点检测...................................................................................................................9 4．2．5 特征参数提取.........................................................................................................10 4．2．6 放宽端点限制的 DTW 算法.....................................................................................12 4．3 编程语言的实现...........................................................................................................13 5 系统功能检测.....................................................................................................................13 5.1 系统功能检测.................................................................................................................13 5．1．1 调试设备.................................................................................................................13 5．1．2 硬件调试.................................................................................................................13 5．1．3 软件调试.................................................................................................................13 5．1．4 联机调试.................................................................................................................14 致谢：.......................................................................................................................................14 参考文献：...............................................................................................................................14 附录 1：....................................................................................................................................15