这次使用的设计软件是MATLAB的GUI模块，要设计一个音乐键盘要知道一个最简单的键盘本身要有36个发音键，既21个音阶和15个辅音阶。-The use of MATLAB software is the design of the GUI module, to design a music keyboard to know one of the most simple keyboard itself will have 36 pronunciation key, already 21 scales and 15 auxiliary scales.