FIELD: acoustics.
SUBSTANCE: present invention is an audio circuit and related device and control method. The audio circuit includes: the first type C port, the first microphone input module, and the second microphone input module. The first type C port includes the first contact and the second contact, the first microphone input module is connected to the first contact, and the second microphone input module is connected to the second contact; and the first microphone input module differs from the second microphone input module. In case when the first type C port and the second type C port of a headphone are in the first connection state, the first contact is connected to the third contact of the second type C port, and the second contact is connected to the fourth contact of the second type C port. In case when the first type C port and the second type C port are in the second connection state, the second contact is connected to the third contact, and the first contact is connected to the fourth contact; where the third contact is configured to connect to the first terminal of a microphone audio signal, and the fourth contact is configured to connect to the first terminal of microphone grounding.
EFFECT: increase in the recording quality.
6 cl, 4 dwg
