Our extensive research indicates that voice recognition technology is not and is not likely to be a viable profession in the foreseeable future.
The following excerpt is taken from the VITAC website, one of the largest if not the largest closed captioning companies in the world.

Would machines be better at captioning than people?
Voice recognition technology is not yet at a point where captions can be produced at a readable level.  Indeed, this is a long way off.    Some companies use “voice writers” where a trained voicer re-speaks program dialogue.    Even this results in lower quality captions than those currently created by human stenocaptioners, though

Before investing time and resources in to voice recognition and steno mask training your should research these careers with national captioning companies  and court reporting firms in your area. Our research indicates these companies are not using voice recognition technoolgy.
It should also be noted that only about 1/2 of the states allow steno mask or voice recognition by law for court reporting.

Click on the following to visit the VITAC website.
http://www.captionson.com/faq.asp