The operation steps are as follows:

1. Right click the "Small Horn" icon in the lower right corner of the system, and select "Recording Device" from the pop-up menu;

2. Right click any blank space of this tab and select "Display Disabled Devices";

3. Right click "Stereo Mix", select "Enable" in the pop-up menu, then right click again to select "Set as default device", and click OK.

1. Windows 10 is a new generation of cross platform and device application operating system developed by Microsoft.

2. QQ phone, full name is QQ voice call. This is a new communication function of mobile QQ, which can make real-time and clear voice calls between friends. Can communicate better.

This function first appeared in the mobile phone QQ4.6 version in January 2014. Since then, it has also added the multi person call function, which supports simultaneous voice calls with multiple QQ numbers.