下面是[语音滤波器电路]的电路图

 

BOM清单

R1= 120Kohm R2= 100Kohm R3= 470Kohm R4-7= 8.2Kohm R5= 6.8Kohm R6= 33Kohm R7= 150Kohm R8= 47Kohm C1-2-8= 2.2nF 100V polystyrene C3= 150pF C4-9= 100nF 100V C5-10= 47uF 25V C6= 100nF 100V polystyrene C7= 560pF C11= 150pF C12= 10uF 25V IC1= TL072

All resistors is 1/4W 1-2%

(：电路图)