摘要：In order to make the teaching of signal and system course more vivid, philosophical thinking is introduced in the process of classroom teaching by introducing the principle of universality and particularity of contradiction into the interpretation of Fourier series, the principle of unity and opposites of contradiction into the explanation of rectangular function and shock function, the principle of quantitative change and qualitative change into the theory of square wave function expansion, and the unity of finite and infinite opposition into the spectrum analysis of shock function. It can be closely combined. Teaching practice shows that this teaching method can effectively mobilize students’ learning enthusiasm, expand students’ thinking depth, and achieve better teaching effect.
关键词：Signal and System;Philosophical Speculation;Thinking Depth;Teaching Method
