The radio, television and film industries all have need of certain talents that are trained precisely for a specific role. While the more famous ones in this regard are folks like DJs and movie actors, but there is always some need for a voice actor in CA for instance. Actually he or she is somebody who has auditioned and passed for the job.
He may be called a voice talent in these industries. This means that he or she is someone who has good traction on the organ that resides in the throat, the human voice box. There are lots of jobs that are specific to this actor, and many instances where he can make or break a movie, a radio show or a TV show.
The talent in question probably is trained beforehand. He may have come from theater or speech and drama courses, which means that his training is for acting above and beyond the talent. Voicing of course requires the expert or professional to do the emotional stuff with the voice, which is not that easy to do.
A lot of movies also need the things like voiceovers, especially when they are animated films. This means a lot of talent is needed. In Hollywood though there is a premium on the talents to be well known real life actors or actresses, usually with a string of real movies in their belt.
That means that they know how to use their voices too. Any good actor knows how modulation, phrasing and delivery can be perfected for any character or scene. Thus they can usually do the voices needed for when there is a need to animate a character that is not human, like dragons for instance, or wolves.
In radio, the talent being discussed is about the only kind of expertise needed. Other than the music, or the ads, the DJs have to work with their own organs of communication and have to keep their throats trained and practiced. This means that they need to deliver on this all of the time, because there is practically no other way to work.
Also, there may be drama Podcasts that happen from time to time. The channels which make this work are usually the established ones, but there are lots of independents operating. Any channel can use all sorts of effects, other kinds of sounds and music, but the human actors will often anchor the shows.
These industries too often are among the most high tech, with lots of new innovations done each year. The premium is to make all the talents available be up on creativity, to make these all create great art. In fact the actor in question is someone who knows that art is a thing that is trained for and practiced every day to become perfect.
In California, this is one expertise that is integral to the entire entertainment sector that is found operating there. This is a complex and large one, and also one of the most lucrative. So the talents in this sense will be well compensated whenever or wherever they are employed here.