这个装置又叫失真踏板,虽然电路简单,但其效果可与市场上某些很昂贵的吉他调音盒媲美。图2中的S1是脚踏开关。不踏时,S1a和S1b均切换到图中下位,Sk1输入插座引入的信号直接通过S1b到达Sk2输出插座,乐声保持原样。用脚踏此开关时,S1a和S1b均处于图示位置,Sk1引入的输入信号经电路处理后变成失真的信号,从Sk2输出。 This device, also called Distortion Pedal, although simple in circuit, works as well as some very expensive guitar tuning boxes on the market. S1 in Figure 2 is a foot switch. When not riding, S1a and S1b are switched to the lower part of the figure. The signal introduced by the Sk1 input socket directly passes through S1b to reach the Sk2 output socket, and the sound remains the same. With this switch on the foot, both S1a and S1b are in the illustrated position. The input signal introduced by Sk1 is distorted by the circuit and output from Sk2.