SURROUNDING Anglicism meaning envelope, surround, derived from the verb surround, 'to surround'. SURROUND (SOUND) is called the musical effect that was used in the 60s and 70s where sounds were separated by different channels and played in multistereo mode by different speakers placed in a circle or oval of the listeners' enclosure or the auditorium or movie theater. In this way sound also came from the sides and back producing the feeling of being in the middle of many sounds coming from all sides as if you were in a live event. It came to install 6 to 9 different speakers.
