If you are having issues with the noise level or sound quality from your built-in microphone in CoScreen,
Sometimes my peers tell me that it's hard to hear me and that my voice sounds robotic when in a CoScreen. At other times it works fine.
Zoom, Google Meet, MS Teams, Webex, etc, it can be caused by a "Voice Recognition" feature provided by Realtek/Fortemedia.
This sound enhancement technology is common in laptops from Lenovo, Samsung, Huawei, etc and doesn't always provide the desired outcome in terms of making your voice sound better.
If you are experiencing such issues, open the "Realtek Audio Console" and untick the option "Voice Recognition" to see if it improves (as explained in the video):