Solution:
The solution involves reconfiguring some advanced sound settings and tweaking the Registry. Start by opening the Control Panel and selecting the Sounds And Audio Devices icon (in the Sounds, Speech, And Audio Devices category). Choose the Voice tab, locate the Voice Playback heading, and click the Advanced button. From the Advanced Audio Properties dialog box, choose its Performance tab and move the Hardware Acceleration slider to the right. It doesn't matter how far to the right, as long as the Hardware Acceleration slider is set to something other than None. Click OK to close the dialog boxes.
Before continuing to the next phase of the solution, you must make sure Dpvsetup.exe isn’t open and running on your PC. Press the CTRL-ALT-DELETE key combination to access the Task Manager and locate any references to Dpvsetup.exe or DirectPlay Voice. End all of them and close the Task Manager.
Now it’s time to edit the Registry. Open the Start menu, select Run, type regedit in the Open field, and click OK. In the Registry Editor, locate and highlight HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\DIRECTPLAY\VOICE\AUDIOCONFIG. The AudioConfig key should include a pair of nested folders labeled with hexadecimal numbers. Open both of them to reveal several Registry values, including three labeled as FullDuplex, HalfDuplex, and MicDetected.
Right-click the FullDuplex value and select Modify from the pop-up menu. In the resulting Edit DWORD Value dialog box, type 3 in the Value Data field and click OK. Repeat the procedure for the HalfDuplex and MicDetected values, setting the Edit Value fields to 3 for HalfDuplex and 2 for MicDetected. Close the Registry Editor and reboot the computer. The microphone should now work correctly. If it doesn’t, you may have a malfunctioning microphone or Game Voice control pad on your hands.
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