针对数字信号处理中涉及数学推导的教学难点,提出了一种直观、形象的图形分析讲解方法。由于该方法不需要直接数学推导,只涉及简单的数学知识和基本原理,符合工科学生的思维特点。实践证明采用该方法教学,可以获得良好的教学效果。 Aiming at the difficult teaching of mathematical derivation in digital signal processing, this paper presents an intuitive and vivid graphical analysis method. Because this method does not require direct mathematical derivation, it only involves simple mathematical knowledge and basic principles, which are in line with the thinking characteristics of engineering students. Practice has proved that using this method of teaching, you can get a good teaching effect.