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Surround sound is a technique for enriching the fidelity and depth of sound reproduction by using multiple audio channels from speakers that surround the listener (surround channels). Its first application was in movie theaters .
Matrix decoding is an audio technology where a small number of discrete audio channels (e.g., 2) are decoded into a larger number of channels on play back (e.g., 5). The channels are generally, but not always, arranged for transmission or recording by an encoder, and decoded for playback by a decoder.
5.1 surround sound ("five-point one") is the common name for surround sound audio systems. 5.1 is the most commonly used layout in home theatres. [1] It uses five full-bandwidth channels and one low-frequency effects channel (the "point one"). [2] Dolby Digital, Dolby Pro Logic II, DTS, SDDS, and THX are all common 5.1 systems. 5.1 is also the ...
The Surround engine utilizes up mixing, volume and phase improvements to the input audio signal to optimize the clarity and balance of the surround sound. The Elevation engine stables the processing of 3D object-based content including Dolby Atmos and DTS:X and interlaces a height effects sound layer into each of the 12-16 speaker drivers (12 ...
Apple TV's audio chip supports 7.1 surround sound, [97] and some high definition rentals from iTunes are offered with Dolby Digital 5.1 surround sound. [98] There is an Apple TV export option in QuickTime which allows content in some formats that the device does not support to be easily re-encoded. [ 99 ]
A more expensive home cinema set-up might include a Blu-ray disc player, home theater PC (HTPC) computer or digital media receiver streaming devices with a 10-foot user interface, a high-definition video projector and projection screen with over 100-inch (8.3 ft; 2.5 m) diagonal screen size (or a large flatscreen HDTV), and a several-hundred ...
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