用于验证时域采样定理，进一步理解和使用采样定理-Used to verify the time-domain sampling theorem

matlab实现，验证奈奎斯特采样定理，对信号求傅里叶变换的数值解，数值求解，画出时域图，频域图-matlab implementation, verification Nyquist sampling theorem, Fourier transform of the signal find the numerical solution, numerical solution, draw the graph in time domain, frequency domain graph

MATLAB实现连续信号采样、频谱分析和采样信号恢复的方法。计算在临界采样、过采样、欠采样三种不同条件下恢复信号的误差，并由此总结采样频率对信号恢复产生误差的影响，从而验证时域采样定理。-MATLAB continuous signal sampling, spectral analysis and sampling signal recovery method. Calculated in a critical sampling, the oversampling signal error r