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Sensurround is an audio process developed in the 1970s by Universal Studios for the presentation of theatrical movies. According to Halliwell'
s Film Companion, the process involved "the augmentation of violent action on screen by intense waves of high decibel sound, enough, in some documented cases, to
crack ribs." Originally developed as a showcase for the Universal production Earthquake, the process was used in four subsequent films, Rollercoaster, Midway, and in the theatrical version of Battlestar Galactica.