How to connect the real machine sound card in the Win7 Hyper-v virtual machine?

1. The real machine is Win7 Enterprise Edition, and the virtual machine is also the enterprise version of Win7. (XP can only support playback without recording in the virtual machine. Microsoft documents say Win2008 R2 can support recording, but the actual operation finds that it only supports playback, doubts.) 2. The MSTSC settings in the real machine are as follows: 3. Edit registration in the virtual machine The table is as follows: Add a Dword value as shown in Figure 4. Recording device that appears after remote connection 5. Call with Lync in Virtual If you follow the above settings or not, please refer to the following settings: To enable or disable the weight of local devices and resources To target, do the following: On the RD Session Host server, open “Remote Desktop Session Host Configuration”. To open “Remote Desktop Session Host Configuration", click Start, point to “Administrative Tools",“ Remote Desktop Services", and then click “Remote Desktop Session Host Configuration”. Under "Connections", right-click the appropriate connection name and click “Properties”. In the "Properties" dialog box for the connection, click the “Client Settings” tab. Under "Redirect", do one of the following for a given local device or resource category: Select this check box to disable redirection of this type of local device or resource. Clear the check box to enable redirection of this type of local device or resource. Click “OK”.