Ready to land your next voice over job? Here is a fairly detailed step-by-step guide for creating a pro quality voice over using Audacity (the free audio software). The steps here will work for any mic, but you should use at least a decent USB mic like the Samson Q1U (which you can get for 49 dollarinis). Ready? Here we go.
1. Open Audacity (use Version 1.3.12-beta)
2. Make sure your mic is set up in Audacity
– Edit/Preferences/Devices (choose the Samson mic under “Recording” and make sure it says “mono” under “channels.”
3. Click the “Record” button (big red circle) in Audacity – a track will appear and begin recording.
4. Record your voice-over
– tips: use a pop filter if you have one. If you don’t, you can make one quickly by stretching an old pair of nylon stockings over a wire hanger that you have shaped into a circle. – record in as quiet a place as possible. – keep you mouth close to the mic (3-5 inches). – keep recording even in you make a mistake. I like to clap my hand or make some other quick, loud noise after a screw-up so that I’ll see it on the track when I’m editing. Just make that mark and continue recording. You can cut the bad takes out during editing.
5. Hit the “Stop” button when you’re finished (big yellowish square).
6. Now find all the parts you want to cut out (bad takes, baby crying, phone ringing, etc.) by
highlighting that bit of audio and simply hitting the “delete” button on your computer keyboard.
7. Once you’re left with the parts you want to keep, it’s time to reduce the ambient background noise.
8. Find a section of the recording where you’re NOT talking, but the mic was recording. Usually this
will be low-level computer drive noise, electronic buzz or hum, etc.
9. Select Effect/Noise Removal in Audacity and select “Get Noise Profile.” The Noise Removal window will close. You’ve just told audacity what constitutes “noise.”
10. Select the entire audio recording (double-click on the audio), open the NR tool again, and click
“OK.” This will filter out the ambient noise and leave your voice alone (for the most part)
11. Listen carefully to the recording in headphones. You’ll likely have several “p-pops” or “plosives”
as they are commonly called. Zoom in to very beginning of an offensive p-pop (see:
http://www.homebrewaudio.com/how-to-fix-a-p-pop-in-your-audio-with-sound-editing-software for a bit more on this)
12. I find that bad p-pops tend to look like the letter “N” in the audio waveform. See pic. Select just the “N” part and then go to Effect/Equalization in Audacity.
13. Create a curve on the horizontal line that starts sloping down to the left at about the 200-250 Hz spot. Just click your mouse on the line wherever you want to create a drag-handle (4 or 5 spaced between 30Hz and 250Hz should do the trick). Then drag the 30Hz handle all the way down. Drag the next one to the right down but not as far, etc. Continue until your curve looks like the picture above.
14. Then click “OK” and listen to the result. The “p” sound should sound more natural and less like an explosion of air. You’ll also notice that the “N” shape is much smaller.
15. Next You’ll want to compress the audio just a smidge to even out the volume and give it some punch. So select the entire audio file (double-click on the blue blob somewhere) and select Effect/Compressor. Set the sliders as follows: Threshold: -12 db, Noise Floor: -40 db, Ratio: 2:1, Attack Time: 0.2 secs, Decay Time: 1.secs. Also, make sure there is a check in the box marked “Make-up Gain for 0dB after compressing.” Click “OK.”
16. Now listen carefully, through headphones, to all the audio. You may notice a few stray bits of unwanted noise in between the talking bits, so to fix those, just highlight them as you find them, and click the “Silence” tool button in Audacity (see Pic 3).
18. Lastly, save the audio in whatever format you need by selecting File/Export in audacity. 44.1KHz and 16-bit wav files are standard “CD quality” audio. Note that if you want to export the audio as mp3, you’ll need to download the Lame MP3 Encoder here: http://audacity.sourceforge.net/help/faq?s=install&item=lame-mp3 . That will install to the correct place automatically.
Hopefully that should get you a decent, professional sounding voice over very quickly.