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Ultra stereo
The stereo optical process designed to be compatible with standard A-type Dolby Stereo prints. It is a 2-track 4-channel analog encoding and decoding system — an alternative to the Dolby A system.
The National Film and Sound Archive of Australia acknowledges Australia’s Aboriginal and Torres Strait Islander peoples as the Traditional Custodians of the land on which we work and live and gives respect to their Elders both past and present.