摘要
利用FIR低通和高通滤波器,借助Matlab图形用户界面的简洁直观和操作方便的特点对带噪语音做了仿真分析,由仿真结果对比可见,带噪语音通过低通滤波器较好地保留了原始语音信息,而经过高通滤波器则留下了噪声,从而证明:语音信号主要分布在低频区,而噪声主要分布在高频区。
The sound signal with noise is simulated and anlyzed by using FIR low-pass filter and high-pass filter based on Graphical User Interface(GUI)of Matlab.By comparing simulation results,we can make the conclusion that the original sound information can be kept perfectly by sound signal with noise and noise through low-pass filter,and the noise has been left through high-pass filter.Thereafter,it can be proved that sound signal is mainly distributed in low-frequency zone,and noise is distributed in high-frequency zone.
出处
《长春工程学院学报（自然科学版）》
2015年第4期97-99,111,共4页
Journal of Changchun Institute of Technology：Natural Sciences Edition
