Until Titanic's release, 70mm film prints used magnetic striping, which was far superior to the analog optical audio that accompanied 35mm prints. By the time Titanic came out, digital audio had taken hold and Titanic's 70mm release was the first one that inserted a DTS timing code into the film print instead of an…

Until Dolby Digital and DTS came along, one of the key advantages of 70mm was the analog magstripe that allowed for full range high fidelity six-channel audio — much better audio quality than the analog optical track. The film ran at a speed more than 2X faster than magnetic reel-to-reel audio tape, so the audio…