一个GUI，低通滤波器，可以滤除音频信号的噪声部分，参数可以自己设定。基本原理采用多种不同滤波器进行比较-A GUI, low-pass filter, to filter out the noise part of the audio signal, the parameter can be set. The basic principles of using a variety of different filters are compared

matlab中GUI的基本操作讲解，让初学者学会怎样使用GUI这一功能。-The basic operation of the GUI matlab explain, let beginners learn how to use the GUI this feature.