数字信号处理中基2 FFT算法的教学研究

Teaching Research on Radix-2 FFT in Digital Signal Processing

基2 FFT算法是数字信号处理课程中的重点知识点之一.以“引导思考、授以方法、锻炼能力”为教学设计原则,探索以问题引导算法思想、分层次数学推导、应用流图计算及结合MATLAB验证多角度开展课堂教学的教学方法.作为数字信号处理课程建设的一部分,基2 FFT算法的教学研究有利于促进数字信号处理课程的教育教学发展.

Radix-2 FFT algorithm is one of focus knowledge of digital signal processing course. The instructional design principle is guide the thinking, granted the method and exercise ability. This paper explores multiple perspectives classroom teaching methods, including issue guidance the algorithm thinking, hierarchical mathematical derivation, calculation DFT by flow diagram, and verification by MATLAB. Radix-2 FFT algorithm teaching research is one part of digital signal processing course construction, and is conducive to promoting the teaching reform of digital signal processing.