Checking your sound settings

You’ll want to make sure that you’re actually piping in sound through your webcam and that the volume level is adequate. Many webcams have visual sound meters that light up as you speak so that you get feedback concerning your volume. One reason to check your webcam’s sound is that you may have more than one sound input device attached to your computer. If you’re unsure of which one is active, just tap the microphone — you’ll find out soon enough!
To adjust your volume:

1. Choose Start>Settings>Control Panels>Sounds and Audio Devices. The Sounds and Audio Devices window appears.
2. Click the Audio tab to open the Sound Recording window; there, click the Volume button. In the window that appears, you see a virtual sound mixer with four volume sliders. Among the sliders are two choices for audio input, Line In and Microphone. Select the check box beneath the volume slider labeled Microphone
3. Using your mouse, move the slider up or down to raise or lower the volume.