QT Voice can't talk what to do

First you need to make sure your microphone does not have a hardware problem, and then make the following settings:

1, using QT Independent client, in the QT voice settings to select the microphone selection device: The main sound capture driver.

2, please try to see if you can speak, if you can not speak, then switch the microphone selection device to another device, until you can talk, if you have been unable to speak, then please change a new Mike, if you can speak with other devices but can not use the main sound capture driver to speak, first look at the next Qt settings, Suppose set to the following figure

3, and then check the system recording equipment options, control panel = = Hardware and Voice = = = Manage Audio equipment

5. If the System recording device option is this, you need to change the device option to the default device and the default communication device is the same device option is