程序说明:

1. 程序实现了三个音乐程序的演奏,同时画出音乐波形.

2. 演奏程序,输入键盘上对应的键,(按键对应的波形值可以在程序中修改)可以演奏出音乐并显示出对应的波形.-procedures : 1. Realization of the three procedures music performances, Meanwhile painted music waveform. 2. perform procedures, keyboard input corresponding to the key, (keys corresponding to the waveform values in the process of revision) can be played music and display the corresponding waveforms.