这个我写的一个计算LC滤波器的程序，可以显示出最后的频率截止情况，有最平法，椭圆法等计算方法-this, I wrote a calculation of the LC filter procedures can demonstrate that the frequency of the final deadline, the most-France, oval law calculation method

巴特沃斯、切比雪夫I和椭圆滤波器设计的源程序！非常难得！ 简洁的C语言编写-Butterworth, Chebyshev I and elliptic filter design of the source! Very rare! Concise C language