As the engineer, your key job is to select and set up the recording space, choose and position the microphone, set levels and make sure you're recording a good, clean signal at a healthy level. Like music, the louder the signal you want to record, the less audible the noise floor, but you don't want to have to speak louder than sounds natural, and you don't want to overcook things when tracking: any distortion will be very noticeable on an exposed voice part, and an otherwise great take with digital clipping won't be acceptable. If you notice clipping only when you start editing, software clip restoration tools might help to make the take usable, but it's not going to be perfect. Remember that although you may have needed to record 'hot' on analogue tape and older 16‑bit digital recording systems, modern 24‑bit A‑D converters can accommodate a much wider dynamic range, so you no longer have to track so loud: you can leave much more headroom.
Like pacing, vocal tone and inflection refer to ensuring you speak in a natural and pleasant manner. You want to be friendly and engaging, but not so much that you sound fake. No one wants to sound like a game show host. But, you also want to avoid monotone robot voice which, like pacing that’s too slow, can be boring and off-putting for listeners.
Part of great voice over work is ensuring that you pronounce each word correctly and that you speak clearly enough to be understood. Avoid mumbling but don’t shout or over-enunciate, either. Don’t worry, though. No one expects you to sound like a professional voice actor. The best thing you can do is speak naturally and clearly and the rest will follow in time.
A great performance recorded on mediocre gear will always sound better than a mediocre performance recorded on great gear. By preparing well, before the session, you'll find it far easier to relax and focus on the message and the listener. As a producer, it's important to be clear what the expected format is for the final audio file. Although there are certain 'standards', your clients' expectations will vary.Read through the script, look up any questionable words and check their pronunciation. For American English, which accounts for the majority of my work, my favourite pronunciation resource is the Merriam‑Webster on‑line dictionary (www.m‑w.com), which includes audio examples. If you don't know how to pronounce the name of a company or product, call the company's customer service centre (if anyone can pronounce it right, they can!). If you don't know how to pronounce the name of a person or city, try searching YouTube for news reports on the subject.
"Ideally the talent should be seated, staying on axis, approximately a foot away from the mic, which should be angled back from the face a bit, not parallel to it. You'll need to see what angle provides the best results, usually a few degrees off from parallel works great — and located between the forehead and the nose, not directly in line with the mouth. This will help with plosives, mouth noise, and some other issues. Movement in the booth should be limited, as the microphone is likely to pick up arms flailing, hands rubbing, page turns, stomach growling, and so on. Keep the levels consistent, moving closer if the scene calls for a whisper, or moving back for a loud voice or scream. A well‑versed narrator is capable of delivering a dynamic performance without creating dynamic levels.”
As editor, you need to turn the raw recording into the final version of the file you'll be sending to your client. Editing during a recording session can be problematic, and particularly so if you're recording in a domestic environment. How can you expect to hear the drone of the dishwasher ruining your recording if the dishwasher is still running as you edit? I'll look in more detail at setting up a voiceover recording studio next time, but for now, if recording in a separate room or isolated booth isn't an option, at least try to edit the file the following morning (or maybe at night) when there's less noise around — because hearing your recording with a fresh ear and in a quieter environment will help you to make better editing decisions, and will reveal noises that slipped your attention earlier.