You need to appreciate that there is a lot to learn and do before your first paid voice acting job. Yes, you want to get out there and start auditioning. But first, you’re going to need proper training, equipment, resources, and yes, some natural talent. The great news is that even though the voice over industry is competitive, there is plenty of voice over work out there for everyone. This guide on how to become a voice actor will give you a good idea of where to start.
Not all noise can be tackled in this way, though: you need to listen for clicks, plosives, digital glitches and the like. These can normally be acceptably repaired by using a 'heal' tool, or a pencil tool to redraw the waveform. Popped 'p's can often be 'fixed' using a high‑pass filter set at 100Hz. For a single glitch, you can zoom in and cut out the cycle of the waveform in which the glitch appears. Just be careful to start and end the cut where the waveform crosses the centre line, otherwise you'll inadvertently add another digital glitch. If glitches are frequent, it's likely that there's a problem with your audio interface's buffer settings — it may be just a playback issue.
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.
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.
It's only after this sort of processing that I'll start cleaning up the recording and dealing with the gaps of silence between spoken passages. A noise gate (or an off‑line 'strip‑silence' function) can be used to automatically mute sections that fall below a certain level. However, if not used carefully, these tools will clip the 'T's and 'P's off the ends of words, and shut out natural breathing sounds. Worse, if your recording is noisy, a noise gate will actually draw attention to the problem, since your client will be able to hear the difference between room tone and absolute muting. Another trick is to use a downward expander to reduce the noise floor of quiet sections, rather than cut out the noise completely.
Next, go back to the beginning and start editing out your mistakes. I also like to edit out any abnormally long silences between sentences or statements and any weird sounds that don’t belong. Remember, though, that pauses are ok (and even necessary) to help break up the audio and make it feel more natural and conversational, so don’t go hog wild with it.