這是一個讓原始音訊可以再不改變音訊長度下，改變pitch的程式，因為如果音訊用resample，雖然可改變其音訊頻率音高，但是卻會有拉長音訊的副作用，因此設計了一個可以改善其缺點的小方法(實做paper ）-This is an original audio so that you can no longer change the audio down the length of the program to change the pitch because if the audio with

This program computes the pitch information of a speech utterance using modified group delay function. input: audio file, reference pitch. output:pitch

音频信号通过LM386放大，基于matlab平台实现,包含飞行器飞行中的姿态控制，如侧滑角，倾斜角，滚转角，俯仰角。- LM386 audio signal amplification, Based on matlab platform, It comprises aircraft flight attitude control, such as slip angle, tilt angle, roll angle, pitch angle.