Microphone recording setting under Windows 7

First click on the small speaker in the lower right corner of the desktop to select the recording device.

Be sure to look for the microphone first, that is, some machines have their own microphone. Some can be plugged into a headset or a microphone. When inserted, two microphones will appear as shown below. You can plug in an external microphone or headset to determine which microphone you need to use. When you plug it, the microphone will disappear. And appear to confirm.

After confirming the quasi-microphone, right click on the microphone and select Set as the default device.

then select the following properties or property in the top right click the microphone in the microphone pulled level in the rightmost, the following options for strengthening the microphone 10db can be.

If there is a big whistling or tinnitus in the process of voice chat, remove the cockroach in front of the listener.

If there is noise or echo in the voice, the following three options to fight √.