
目录
摘要 ...........................................................................................................................................................3
1 绪论 .......................................................................................................................................................5
1.1 设计任务.............................................................................................................................5
1.2 设计要求............................................................................................................................6
2 设计的总体方案与原理 .......................................................................................................................7
2.1 设计的总体方案图............................................................................................................7
2.2 程序流程图........................................................................................................................8
2.3 设计的详细原理................................................................................................................9
2.3.1 信号采样................................................................................................................9
2.3.2 混响与延时............................................................................................................9
2.3.3 离散傅立叶变换..................................................................................................10
2.3.4 滤波器设计..........................................................................................................11
3 程序设计的步骤和过程 .....................................................................................................................13
3.1 原始语音信号时域波形和频谱......................................................................................13
3.2 采样后语音信号的时域波形和频谱..............................................................................13
3.3 对采样后的信号延时......................................................................................................14
3.4 对采样后的信号混响......................................................................................................14
3.5 单回声滤波器程序设计..................................................................................................15
3.6 多重回声滤波器程序设计..............................................................................................15
3.7 无限个回声滤波器程序设计..........................................................................................16
3.8 全通结构滤波器程序设计..............................................................................................17
4 结果分析与体会 .................................................................................................................................18
5 设计心得体会 .....................................................................................................................................25
6 主要参考文献 .....................................................................................................................................26
附录:仿真总程序 .................................................................................................................................27