目 录
目 录............................................................................................................................................I
1 引言..........................................................................................................................................1
2 语音增强算法概述..................................................................................................................1
2.1 语音增强的应用背景.........................................................................................................................1
2.2 语音信号及噪声的特点....................................................................................................................2
2.2.1 语音信号的特点.....................................................................................................................2
2.2.2 噪声特性..................................................................................................................................3
2.3 人耳的感知特性................................................................................................................................3
2.4 字化语音的加窗处理........................................................................................................................4
3 基于短时谱估计的语音增强算法..........................................................................................5
3.1 幅度谱相减法.....................................................................................................................................5
3.2 功率谱相减法.....................................................................................................................................6
3.3 维纳滤波法.........................................................................................................................................7
4 噪声估计..................................................................................................................................8
4.1 平滑噪声功率谱................................................................................................................................9
4.2 带噪语音的最小跟踪法....................................................................................................................9
5 matlab 仿真............................................................................................................................10
5.1 仿真环境...........................................................................................................................................10
5.2 仿真结果及分析...............................................................................................................................10
.................................................................................................................................................................11
总结...........................................................................................................................................13
参考文献...................................................................................................................................14
附录...........................................................................................................................................15
文献综述.....................................................................................................................................1