Phase shifting type audio processing system based on common-source amplifying circuit

The invention discloses a phase shifting type audio processing system based on a common-source amplifying circuit. The phase shifting type audio processing system based on the common-source amplifying circuit consists of an audio acquiring module, a frequency selecting circuit, a micro-processing circuit, a current source circuit, a two-stage low-pass filtering amplifying circuit and a phase shifting processing circuit, wherein the frequency selecting circuit is connected with the audio acquiring module; the micro-processing circuit and the current source circuit are connected with the frequency selecting circuit; the two-stage low-pass filtering amplifying circuit is connected with an outputting end of the micro-processing circuit and an outputting end of the current source circuit; and the phase shifting processing circuit is arranged at an outputting end of the two-stage low-pass filtering amplifying circuit. The phase shifting type audio processing system based on the common-source amplifying circuit is characterized in that the common-source amplifying circuit is serially connected between the micro-processing circuit and the two-stage low-pass filtering amplifying circuit. The two-stage low-pass filtering amplifying circuit is combined to the common-source amplifying circuit creatively, audio signals can be amplified in an undistorted manner under the combined action of the two amplifying circuits, a sound effect can be high, and a movie playing quality is improved.