这个东西很重要的，关于地震反应谱和地震动的时程，傅里叶幅值谱。-This thing is very important, on the earthquake ground motion response spectra and time history, Fourier amplitude spectrum.

基于matlab的傅里叶频谱分析实验报告，可作为信号系统和通信原理的实验参考。-Based on matlab Fourier spectrum analysis experimental report, can be used as a signal system and communication principle of experimental reference