数字信号处理在音乐延时和混响处理中的应用 用到界面设置，演示非常方便。-Digital signal processing applications used in the music delay and reverb processing interface settings, the demo is very convenient.

产生一个按键按下对应的信号，加入一定的高斯白噪声，并解码检测出来。设计GUI界面模拟按键界面。(GUI MATLAB code for gui.fig % GUI, by itself, creates a new GUI or raises the existing % singleton*. % % H = GUI returns the handle to a new GUI or the handle to % the existing