The engine comprises the Auro-Codec and the Auro-Matic upmixing algorithm to convert legacy content into the Auro-3D format. The Auro-3D technology consists of the Auro-3D Engine and a Creative Tool Suite. The principle employed is similar to other object based formats such as Dolby Atmos or DTS:X. The height information that is captured during recording is mixed into a standard 5.1 surround PCM carrier, and during playback the Auro-3D decoder extracts the originally recorded height channels from this stream.ĪuroMax expands on the basic layout used by Auro 11.1 and Auro 13.1 by dividing the side, rear and ceiling channels into "zones", to allow for placement of sound at discrete points along the theatre wall or ceiling as well as within the theatre itself. This additional layer reveals both localized sounds and height reflections complementing the sounds that exist in the lower surround layer. Auro-3D creates a spatial sound field by adding a height layer around the audience on top of the traditional 2D surround sound system. It is designed along three layers of sound ( surround, height and overhead ceiling), building on the single horizontal layer used in the 5.1 or 7.1 sound format.
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