语音特征提取，如过零率，能量比，短时能量。须导入MAV音频。-Voice feature extraction, such as zero-crossing rate, energy ratio, short-term energy. MAV audio to be imported.

近年来，在不断增长的应用前景刺激之下，微型飞行器正逐步成为一个国际 性的研究热点。MAV 在低雷诺数条件下具有的非线性飞行动力学特性、外界非 定常大气扰动、系统内的微型化和测量精度等因素，使得MAV 自主飞行控制成 为一个有别于常规无人机控制的复杂问题。-In recent years, the growing prospect stimulation under the MAV is gradually becoming an international hotspot. MAV

一套完整的四旋翼微型飞行器设计原理及程序，绝对能用。-A complete set of four rotor MAV design principles and procedures, absolutely can.