CAJ | 학술논문

“信号处理”课程教学改革的一个方向是在讲授本科生“信号系统”和“数学信号处理”课程的传统内容的过程中能充分体现时代信息。本文通过对一个典型非平稳信号应用傅里叶变换、小波变换和希尔伯特黄变换三种方法进行频谱分析的比较，说明了三种方法各自的特点及使用局限性，体现了经典理论与最新技术引入之间的相互融合，达到了良好的教学效果。
“신호처리”과정교학개혁적일개방향시재강수본과생“신호계통”화“수학신호처리”과정적전통내용적과정중능충분체현시대신식。본문통과대일개전형비평은신호응용부리협변환、소파변환화희이백특황변환삼충방법진행빈보분석적비교，설명료삼충방법각자적특점급사용국한성，체현료경전이론여최신기술인입지간적상호융합，체도료량호적교학효과。
How to fully reflect the era information in teaching traditional content is one direction of teaching reform of Signal Processing courses. For a typical non-stationary signal, we use Fourier transform, wavelet transform and Hilbert Huang transform （referred to as HHT） to analyze and compare. The results show that the respective characteristic and using limitation of three methods, better reflecting the mutual integration between the classical theory and the latest technology, and achieving a good teaching effectiveness.