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Q4：What is 7.1CH listening environment and what difference with 5.1CH ?
1.
The 7.1 channel mode is newest multi-channel audio format and technology in the market.
It includes center, subwoofer, front left, front right, left surround, right surround, left back
surround, and right back surround according to Dolby Digital and DTS ES standards.
2.
The 7.1CH content was naming Dolby Digital EX by Dolby Lab. and DTS was naming DTS-ES
(Extended Surround).
3.
The difference of 5.1CH and 7.1CH is additional 2CH. This extra 2 speakers were placed on
rear side to enrich back sound sources for entire enveloping surround feeling.
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