In practice, finite series or sum of finite terms of weighted harmonics can be an approximation for any piece wise continuous function in a period. 应用上则可以用有限项谐波级数近似合成一周期内为片段连续之任何周期函数。
Finally, the solution of the problem can be summarized to a series of algebraic equations and solved numerically by truncating the finite terms of the infinite algebraic equations. 最终归结为对一组无穷代数方程组的求解问题，利用截断有限项的方法对其进行计算。
