noun
[ U ] a system for reproducing sound using several speakers (= the pieces of equipment that the sound comes out of) placed around the person listening in order to produce a more realistic sound
noun
[ U ] a system for reproducing sound using several speakers (= the pieces of equipment that the sound comes out of) placed around the person listening in order to produce a more realistic sound
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005