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Tomlinson Holman's 10.2 surround sound, a format currently under development, uses 12 or 14 fully discrete channels, both including two height channels; front left and front right. The Dolby Atmos surround system, which allows for unlimited number of tracks, uses height channels, too.
Dolby Atmos in theaters has a 9.1 (commonly referred to as 7.1.2) channel-based "bed" channels for ambience stems or center dialogue, leaving 118 tracks for objects. [16] Atmos for home in film, television, and music uses a technique called "spatial coding" to reduce the audio to up to a maximum of 16 concurrent "elements" or audio location ...
7.1 channel surround is another setup, most commonly used in large cinemas, that is compatible with 5.1 surround, though it is not stated in the ITU standards. 7.1 channel surround adds two additional channels, center-left (CL) and center-right (CR) to the 5.1 surround setup, with the speakers situated 15 degrees off center from the listener. [24]
Dolby Atmos: This rather magical technology adds "height channels" to the listening experience — basically another way to simulate 3D sound. The Sonos Arc, for example, accomplishes this via a ...
DTS-ES Discrete provides 6.1 discrete channels, with a discrete, mastered and recorded (non-matrixed) center-surround channel; in home theater systems with a 7.1 configuration, the two rear-center speakers play in mono, as does other decoders like the Creative DDTS-100, a standalone 7.1 channel decoder which includes support for up to 6.1 when ...
The center channel is reduced in level by 3 dB and summed to the left and right channels; the surround channel is attenuated by 3 dB, passes through a band-pass filter (cutting frequencies under 100 Hz and above 7 kHz), passes through Dolby B noise reduction and is encoded on the left and right channels with opposite polarity (this is achieved ...
The Auro-3D concept and formats were developed in 2005 by Wilfried Van Baelen, CEO and founder of Galaxy Studios and Auro Technologies. The format was officially introduced to the public at the AES Convention 2006 in Paris (20–23 May) and San Francisco (6–8 October) during the workshop "Surround with Height Channels".
Auro 11.1 is a channel-based system and thus differs in capability compared to competing formats such as Dolby Atmos and DTS:X. The height layer allows for placement of background reflections and reverberations observed in nature as well as allowing for smooth panning from the base layer to the ceiling.