The circuit of the object of the rejection of interference of semi - differential of a stage of the input of an audio processing equipment

摘要

The circuit (CIR) has an amplifier whose input is connected to a point (GND-DSP), and a capacitor (C6) mounted between an output of the amplifier and a first resistor (R6). A terminal of the resistor is connected to a common terminal of second and third resistors (R5, R7). A terminal of the second resistor is connected to the point, and a terminal of the third resistor is connected to a reference potential, where the potential has a value equal to reference value of an audio processing equipment.