基于IIR滤波的语音信号处理系统matlab源码+Labview

上传者: cipai5547 | 上传时间: 2019-12-21 19:34:41 | 文件大小: 1.38MB | 文件类型: rar
滤波器设计在数字信号处理中占有极其重要的地位,IIR滤波器是滤波器设计的重要组成部分。课题基于Matlab有噪音语音信号处理的设计与实现,综合运用数字信号处理的理论知识对加噪声语音信号进行时域、频域分析和滤波。在设计实现的过程中,用巴特沃斯、切比雪夫和双线性变换法设计IIR数字滤波器,并利用Matlab作为辅助工具完成设计中的计算与图形的绘制。Matlab图形用户界面GUI的数字滤波器设计与仿真方法,不仅依赖于Matlab代码,而且充分利用控件,使得设计更加的快捷、直观、灵活性强。通过LabVIEW对所设计的系统进行仿真分析,可以有效快捷地设计IIR数字滤波器,结果的各项性能指标均达到指定要求。并对语音信号进行分帧(enframe函数),分别取浊音帧和清音帧计算短时能量和短时平均过零率等参数,并对结果进行比较分析。

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