Definition of "sound stage"

sound stage

noun
plural sound stages
1. (film, television) A soundproof room or building used for the production of movies or of television programmes.
  Quotations
  Filmed entirely on a sound stage, with the exception of a single cutaway exterior shot (reproduced exactly in the Swedish version) , the film has all the earmarks of the "canned theatre" style: minimal camera movement […]
  1992, Robert B. Altman, Sound Theory, Sound Practice, Psychology Press, page 145