Here are some suggestions on how to record a voice over. Ready to land your next voice over job?
This 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 Q2U (which you can get for 59 dollarinis). That's what I will assume for the example here.
Of course if you want much higher quality, you can invest in a large diaphragm condenser mic that you plug into an audio interface unit. A Focusrite Scarlett Solo Studio Bundle (mic, interface and headphones).
Audacity is a free audio recording program that works on both Mac and Windows and is incredibly powerful - especially for a free program.
2. Make sure your mic is set up in Audacity
To do that, go to Edit/Preferences/Devices (choose the Samson mic (or interface box like "Focusrite Scarlett") under "Recording" and make sure it says "mono" under "channels."
3. Click the "Record" button (big red circle) in Audacity
A new track will appear when you hit the "record" button and start recording.
4. Record your voiceover
Here are some tips for that:
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. But you can buy one for about $10 on Amazon - Auray Pop Filter.
Record in as quiet a place as possible.
Keep you mouth close to the mic (3-5 inches). Most of us record in spare rooms in our house, which means lots of echo-y, reverb-y room sound. And one quick fix to reduce that that you can apply immediately is simply to record close (that 3-5 inches I suggest) to the mic. I believe that this could be the most helpful bit of advice on how to record a voice over of everything in this post.
Keep recording even in you make a mistake. I like to clap my hands 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. I show how to do this in my post Quickly Fix Audio Recording Mistakes by Overdubbing, Part 2.
Make sure the wave forms (blue blobs) are fairly large in the track. You don't want to over do it to where they go out to the edges and beyond. But if they are too quiet - not much more than what's on the center line - then you should turn up the input level* and start again until you get fat and chunky blobs. This may be the 2nd most important piece of advice for how to record a voice over!
* If you are using an interface unit to plug your mic in, you can turn the input level knob up on that. If you have a USB mic, go into your Windows Sound control panel (or System Preferences/Sound on a Mac), click on the Recording tab, select your mic, select Properties, then select the "Level." tab. Make sure the slider is at around the 85-90 percent mark. Sometimes Windows puts this level down to like 20% for some reason.
5. Hit the "Stop" button when you're finished.
This is pretty self-explanatory. Just click the big yellowish square at the top of the scree.
6. Trim and cut.
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. Leave some space at the beginning though. You'll need that to sample background noise for noise reduction in the next step.
7. Reduce the noise.
Once you're left with the parts you want to keep, it's time to reduce the ambient background noise. Usually this will be low-level computer drive noise, electronic buzz or hum, hiss from a USB mic, etc.
Find a section (like the area before you started talking as I mentioned above) of the recording where you're NOT talking, but the mic was recording, and highlight that section. Make ABSOLUTELY SURE there are no voice or breath sounds in this selection.
On the Effect dropdown menu, choose "Noise Reduction."
In the Noise Reduction effect window, click "Get Noise Profile." The Noise Removal window will close. You've just told audacity what constitutes "noise" by sampling "just noise" from your selection.
Select the entire audio recording (double-click on the audio).
Open the Noise Reduction tool again, and click "OK." This applies noise reduction to the entire file based on that sample of "just noise."
This will filter out the ambient noise and leave your voice alone (for the most part).
8. Remove "P-Pops"
Listen carefully to the recording in headphones. You'll likely have several "p-pops" or "plosives" as they are commonly called, caused when you say the letter P or B. Here is how to get rid of those (for more detail, see my post: How To Fix A "P-Pop" In Your Audio With A Sound Editor.)
Zoom in to very beginning of an offensive p-pop. I find that bad p-pops tend to look like the letter "N" in the audio waveform. See pic below.
Select just the "N" part and then go to Effect/Equalization in Audacity.
Create a curve on the horizontal line that starts sloping down to the left at 200 Hz. See pic below.
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.
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.
This process can be very time consuming. But if you are willing to invest $59, you can SIGNIFICANTLY speed up the process of removing p-pops. Accusonus has a product that I now use every time I record my voice. It's called the ERA 4 Plosive Remover. CLICK HERE to find out more or to purchase it. You just add it as a plugin effect in Audacity.
9. Even out the volume level
There will almost certainly be a few peaks in your recording that are clearly louder than the rest. You'll want to even things up so that the audio is more consistent. The process is sometimes called "compression." (See my post: What Does Compression Mean In Audio Recording? for more on this).
Here is how to use the Compressor effect in Audacity.
Select the entire audio file (double-click on the blue blob somewhere).
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."
10. 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 below.
11. Export your audio file
Lastly, save the audio in whatever format you need by selecting File/Export
44.1KHz and 16-bit wav files are standard "CD quality" audio. You can also export the audio as mp3.