By simplifying the items of Fourier series expansion and collocating with convergence of Gauss-Newton algorithm, accurate parameters can be solved faster and the error is lower than 5%.

• 还藉著简化傅立叶级数的项数并搭配上高斯牛顿演算法的收敛特性，让精确的参数可以被快速求解，其误差都是控制在5%25以下。