The sampling theorem demo program, you can clearly see that when the recovery process of the analog signal sampling rate greater than 2fs and frequency aliasing when the sampling frequency is less than 2fs process. Also includes a demonstration of the frequency of the sampling process. Very detailed. Through this demonstration program, you can certainly understand sampling theorem this basic principle in the field of communication!

tri_freqm.m
tri_freqm_fft.m
tri_pluse_freq_withFFT.m
利用FFT变换计算三角函数的频谱.m
验证抽样定理.m
sample.m

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