Sony VAIO VGC-RA718G Quick Start Manual page 230

Why is my microphone so sensitive to background noise?
If you find there is too much background noise when you record sound, you should adjust the microphone by following
these steps:
1. Click Start in the Windows taskbar, then click Control Panel.
2.
Click Sounds, Speech, and Audio Devices, then click Sounds and Audio Devices.
3.
From the Audio tab, locate the Sound recording section and click Volume. The Recording Control dialog box
appears.
If the volume control for the microphone is visible, skip to step 6.
4. Select the Options menu and click Properties. The Properties dialog box appears.
5. In the section, Show the following volume controls, click to select the Microphone check box. Click OK.
6.
From the Recording Control dialog box, decrease the microphone volume level by moving the slider bar down.
7.
Close the Recording Control dialog box and then close the Sounds and Audio Devices Properties window.
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