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The left and right surround speakers in the bottom line create the surround sound effect. 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]
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 centre from the listener. [24]
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When outputting to separate equipment over a 2-channel connection, a Dolby Digital decoder can optionally encode the output using Dolby Surround to preserve surround information. The '.1' in 5.1, 7.1, etc. refers to the LFE channel, which is also a discrete channel.
Surround channels in a 5.1 speaker setup in red Surround channels in a Dolby Pro Logic 4.0 system using two speakers in antiphase or a dipole speaker Single rear surround channel in a 6.1 system. Surround channels are audio channels in surround sound multichannel audio.
Later versions of the Live!, usually called Live! 5.1, offered 5.1-channel support which adds a center-channel speaker and LFE subwoofer output, most useful for movie watching where Dolby Digital 5.1 is decoded. The Live! implemented DOS legacy support via Ensoniq's AudioPCI DOS TSR program. Creative acquired Ensoniq in 1998 and, as part of the ...
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