According to Wikipedia's article on voiceover, a voiceover is:
"a production technique where a voice - that is not part of the narrative (non-diegetic) - is used in a radio, television production, filmmaking, theatre, or other presentations. The voice-over... is pre-recorded and placed over the top of a film or video and commonly used in documentaries or news reports to explain information."
It is pretty clear why you would need a voiceover for telephone systems, audio books, narrations, video games, and commercials – but did you know that many businesses are now adding voiceover their websites, business presentations, and tutorials?
Adding a voiceover offers the following advantages for your business:
Yes, a voiceover enhances your project and gives your company an edge. However, it is important to realize that a voiceover also represents you and your business, and it is therefore crucial that the voiceover be recorded professionally and by the right voice actor.
Article by Victoria Feinerman