几个算法的试验
0、FFT傅立叶变换求频域幅值
1、FFT傅立叶变换求相位
2、线性回归
3、非线性回归
4、线性组合函数求解
5、任意曲线拟合：y=a*Sin(bx+c)
6、任意曲线拟合：y=A*[e^(-x/t1)-e^(-x/t2)]

Experimentation of several algorithms
0、FFT Fourier transform to find the frequency domain amplitude
1、FFT Fourier transform to find the phase
2、Linear regression
3、Nonlinear regression
4、Linear combination function solving
5、Any curve fitting: y=a*Sin(bx+c)
6、Any curve fitting: y=A*[e^(-x/t1)-e^(-x/t2)]