Dolby Surround 7.1 is a sound system by
Dolby Laboratories which delivers theatrical
7.1 surround sound to movie-goers. It adds two new channels to current
Dolby Digital 5.1. The first film to feature Dolby Surround 7.1 was 2010's
Toy Story 3 by
Disney and
Pixar. There are 6,000 locations capable of presenting Dolby Surround 7.1 films worldwide as of February 2015.