Before you get down to the nitty-gritty, though, I recommend doing a test recording to ensure your equipment works properly and your audio levels are strong. You don’t need to record the entire script, but a few paragraphs will give you enough to ensure that the audio is clear, at an appropriate level, and doesn’t include any stray or ambient noises.
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.
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.
“Bunny Studio Voice is an indispensable part of my production workflow. Using them saves me time and money compared to hiring a recording studio and VO artist. Without a doubt, their best feature is customer service. Thanks to their enormous support, I have saved DAYS off my deadlines and received pitch-perfect reads. I couldn’t recommend them more”
The engineering role will probably be the most familiar to regular SOS readers, and the issues of technical quality for digital audio in voiceover work are no different than they are for any other recording session. The key difference is that some clients will expect you to deliver 48kHz files instead of the 44.1kHz ones that are usually used in the music business. The 48kHz sample rate ensures that there's an integer number of audio samples for each frame of a standard 24 or 25 frames‑per‑second video recording.