Win7 how to turn on four channels

Friends who like to watch movies, definitely want to enjoy the immersive screen and shaking music effect in the cinema, and expect to feel the atmosphere in the home appliance brain, so there is a high need for the computer's video card with sound. Below and you share all of a sudden Windows7 system download to open the four-lane approach.

1, with the right mouse button bare-screen desktop children in the lower right corner of the speaker icon to adjust the volume.

The tutorial then picks up "playback facilities".

2, in the pop-up window select the top navigation bar in the "Play" option, in the bottom of the box selected in the "Speaker", bare metal left corner of the layout options.

3, in the bottom of the window selected in the "Left Front and right front", and then the sound of the installation test, and finally always point to the next step to exit.

So far I have been basically set up, and finally found that the microphone horn does not sound. But all the speakers are normal at the time of the test? Is there a problem?

4, open Vidhdaudiodeck Control Panel, select the lower left corner of the advanced standard style, selected below the four channel.

Is there any noise in the headset?