使用matlab和excel绘制原始数据图，可以一起绘制16通道，也可选择通道创建子图

使用快速傅里叶变化绘制功率谱，并绘制选择的谱估计算法

使用FIR滤波器（非递归型滤波器）获得EEG信号delta, theta, alpha, and beta波段的波形

绘制每一波段的频谱

通过绘制数个通道数据频谱图来评估信号的稳定性

-Use matlab and excel to draw the original data map, you can draw together with 16 channels, you can also choose to create sub-map channel

Use the fast Fourier transform to draw the power spectrum and plot the selected spectral estimation algorithm

The waveforms of the EEG signals delta, theta, alpha, and beta bands are obtained using a FIR filter (non-recursive filter)

Draw the spectrum of each band

The stability of the signal is　uated by plotting several channel data spectra