信号的抽取与插值是改变信号抽样率最基本的方法,是数字信号处理等相关课程的重点内容。在对抽取与插值理论详细阐述基础上,利用MATLAB的图形用户界面GUI设计了信号抽取与插值的实验仿真系统。实践表明,此设计能有效辅助课堂教学和实验教学,使学生能更好地理解该部分基本理论,并锻炼了工程应用能力。 Signal extraction and interpolation is to change the signal sampling rate of the most basic method is the focus of digital signal processing and other related courses. Based on the elaboration of the theory of extraction and interpolation, an experimental simulation system of signal extraction and interpolation is designed by using MATLAB graphical user interface (GUI). Practice shows that this design can effectively assist classroom teaching and experimental teaching so that students can better understand some of the basic theory and exercise engineering application ability.