如何修正Stereo Mix 麥克風。

Hello Connie. If stereo mix is not capturing your voice, I suspect it is most likely the way Line is calling for its input device. Stereo Mix is there to record the audio from your system (like music or game sound), it is not a microphone input. Therefore if Line is using Stereo Mix as the microphone source, it will only send the system sounds, or silence, but will not send your actual voice.

To remedy this, initiate by pressing (Win + R) to open the run command, type mmsys.cpl, and hit Enter. This opens classic sound settings. Go to the Recording tab, right-click microphone (Realtek Audio) and set it as the Default Communication Device. This will force applications like Line to use your actual microphone. Following this, open Line's settings and confirm that Microphone (Realtek Audio) is in fact set as the input device, and not Stereo Mix.

If Stereo Mix is still interfering, you could disable it. While back in the Recording tab, right-click Stereo Mix and disable it. This should stop Line from defaulting to Stereo Mix. Also ensure manual access to your microphone has been granted by Windows 11. In settings go to Privacy & Security > Microphone. Here you should see access was granted for both device and desktop apps.

Here's the reference: How to Enable Stereo Mix if not Showing as Recording device in Windows 11/10

Note: I am providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link.

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Best regards,