利用MATLAB强大的图形处理功能，符号运算功能和数值计算功能，实现连续时间非周期信号频域分析的仿真波形；

1、用MATLAB实现典型非周期信号的频域分析；

2、用MATLAB实现信号的幅度调制；

3、用MATLAB实现信号傅立叶变换性质的仿真波形；

-The use of MATLAB powerful graphics processing capabilities, symbolic computing and numerical computing capabilities to achieve continuous-time non-periodic signal frequency domain analysis of the simulation waveform　1, using MATLAB to achieve a typical non-periodic signal frequency domain analysis　2, using MATLAB to achieve signal amplitude modulation　3, using MATLAB for signal Fourier transform nature of the simulation waveform