打开音频文件实现变声器，原声变女声、老人声、童声还有语速的变快变慢(Voice Changer, change the video file into women's , old men's and children's, and also change the speed of video)

此代码为简单的男女音判别代码，读者可根据增加判别因子进行更改。(This code is a simple discrimination code for men and women, and the reader can change it according to the increase of the discriminant factor.)