Yet the HDR video of Dolby Vision was only half the story, according to Scott Hecker, supervising sound editor for the film. While the same sound elements for “Batman v Superman” may be mixed in 5.1 and 7.1, it’s Atmos that truly brought the sound alive.
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http://mesalliance.org/blog/me-daily/2016/04/05/superman-v-batman-crew-praises-dolby-atmos-vision/