Once you’ve identified a pool of candidates based on skills and availability, look at their experience and browse their gig gallery. Listen to samples of previous voice-over work to get a sense of their style, and choose the candidate whose style you like best. You can contact them before ordering, explain your project requirements, expectations, and budget, and provide examples of work you like by the seller or someone else as an audio reference.
3. You need a simple, reliable, home-recording setup. Keep in mind: Your objective is on being the best voice talent you can be, not the best production studio or recording engineer. Nevertheless, you do need the ability to record, edit, and turnaround a proper audition. Do not run out and purchase a mic! You can’t return it, for hygienic reasons. Besides, there’s a bit of a learning curve to this and recent industry advances have made having a home “studio” easier and more affordable than ever before. You could have the best gear and the coolest toys on the block, but if you can’t use them it’s a waste. (Tip: What you’re recording on matters less than where you’re recording. Find a quiet place like a closet full of clothes to record in.)
2. You need training. “Winging it” isn’t professional because it’s unreliable, and could explain why there are so many one-hit wonders in this profession. You need a professional approach, mic technique training, and time dedicated to practice, practice, practice in order to build your skills. Your confidence will build from there. Much like circuit training fine tunes your physical acuity with continued use, technique training conditions your performance muscle. You can’t expect to run a marathon if you don’t train. Every skill level of talent benefits from proper coaching.
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.
This is the number-one issue most people bring up when they discover they have to do voice over work for their video. Let’s face it. Most of us rarely have to hear our own voices in audio recordings. We’re used to the rich, warm sound of our own voices in our own ears. There’s no way around the fact that you sound different on recording that you do to yourself.
In late 2009, my wife Simone received an email from Prague in the Czech Republic. The sender, Mirek Jirku, was heading up a project to record voice messages for the foreign‑language versions of the latest Avast! anti‑virus software. Mirek sent us eight messages to be recorded, specified the fee and deadline, and requested a slow, friendly read. He asked us to send separate stereo MP3 files (at 160kbps or higher quality) for each message, specified that we'd have to sign a non‑disclosure agreement before recording, that we'd need to invoice afterwards, and that he'd pay via a wire transfer instead of PayPal (which is often used for international payments).