Good voice recordings require a little finesse. Here are some tips on making great recordings of human speech.
Use a decent microphone – Typically, microphones that come with computers or sound cards have background noise and poor sound quality. You can get an entry-level microphone from Radio Shack for $25 and plug it directly into most sound cards. Music stores sell quality microphones for about $75. For the best possible sound, plug an external mixer directly into your sound card.
Speak up, loud and clear – Record your voice and compare it to the sound of a professional announcer. Most beginners don't speak with enough intensity or clarity.
Use a boom microphone stand – Unless you can remain absolutely still, holding the microphone in your hand will produce annoying bumps and noise in your recording. A desktop microphone stand will work, but if you touch or bump your desk, you will probably hear it.
Try a windscreen – If your recordings have lots of plosives (more commonly known as popping your P's) try using a windscreen on your microphone.
Listen to your microphone in your headphones – Hook up a pair of headphones to your sound card and listen to yourself speak while you record. This will allow you hear problems in your recording (like the car alarm in the distance) as they happen. Use the Windows Audio Mixer to do this.
On the Windows Taskbar, open the Control Panel, and click Sounds and Audio Devices
Click the Audio tab.
In the Sound Playback box, click Volume. Next, turn up the Microphone volume until you hear it in your headphones.
Careful! If you have the microphone turned up while using your computer's speakers, you may get feedback noise.