A sound engineer is a person who works in a recording studio or for a radio or television company,and whose job it is to alter and balance the levels of different sounds as they arerecorded.
[mainly British]regional note: in AM, use sound mixer
sound engineer in British English
(saʊnd ˌɛndʒɪˈnɪə)
noun
a person who works in a recording studio or for a radio or television company, and whose job it is to alter and balance the levels of different sounds as they are recorded