语音信号的数字滤波处理 加入高斯噪声再滤除,信噪比小于20分贝-Voice signal digital filter handle add further filtered Gaussian noise, signal to noise ratio is less than 20 dB

用matlab实现巴特沃斯高通滤波器的M文件。本例读取电脑自带的XP开机声音，加上低频噪声，然后滤波看效果。-With Matlab M-file Butterworth high-pass filter. This case, read the computer comes with XP start-up sound, coupled with the low-frequency noise, and then filtering to see results.