说明：  该程序经过实际使用，是综合网上各种求小波包能量方法的正确版本，能够有效使初学者少走弯路，可直接使用，对于函数已进行了备注。
(After the actual use of the program is a comprehensive online variety seeking wavelet packet energy method the correct version, so that beginners can effectively avoid detours, can be used directly for the function has been carried out notes.)