diff --git a/Matlab/comm/lab1_0.m b/Matlab/comm/lab1_0.m
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+Fs=1e4;N=1e4; %定义采样频率、FFT 长度
+t=(0:N-1)/Fs; %定义时间向量
+f=Fs*(-N/2:N/2-1)/N; %定义频谱自变量 f 向量
+ft=200*(sinc(200*(t-0.6))).^2; %产生三角频谱信号
+yt=ft.*cos(2000*pi*t);
+F=fftshift(fft(yt,N))/N; %求频谱
+AF=abs(F); %求幅度谱
+AFdB=20*log10(AF); %求幅度谱/dB
+subplot(311);plot(t,yt);
+xlabel('t/s');grid on
+axis([0.55,0.65,-10,210])
+subplot(312);plot(f,AF);
+ylabel('幅度谱');xlabel('f/Hz');grid on
+subplot(313);plot(f,AFdB);
+ylabel('对数幅度谱/dB');xlabel('f/Hz');grid on
\ No newline at end of file
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diff --git a/Matlab/comm/lab1_2.slx b/Matlab/comm/lab1_2.slx
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