When using the microphone on some models of Shenzhou notebooks, there is some noise in the recorded sound, which affects the quality of the recording and the clarity of voice chat. After testing and analysis, it is found that the "Microphone" in "Volume Control" can be set to mute. The purpose is to prevent the sound input from the microphone from being amplified through the speaker circuit and avoid some noise problems.

The microphone mute set here to suppress noise is in the "Volume Control" panel, not the "Recording Control" panel, so it will not affect the normal recording function of the microphone.

The "Volume Control" panel is shown below:

"Recording Control" panel is shown below: