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Glossary

Surround Channel

In a Surround Sound system with only a single Rear Channel, that Channel will be designated the Surround Channel. There can also be multiple Surround Channels with designations like Left Surround and Right Surround. If there are more than three Rear Channels they may also be given other descriptions, but will still generally have the word Surround in their name.

Sometimes you may also see other channels of a Surround Sound system designated as Surround Channels, but this is technically inaccurate and can lead to confusion, so it's best to only refer to Rear Channels as Surround Channels.

A single Surround Channel is sometimes just referred to as Surround, as in the Channels are Left, Right, Center, and Surround.

The image below shows the position of the Surround Channel in a Dolby Matrix Surround (Dolby Surround or Pro Logic) configuration. Notice that although there's only a single Channel, two speakers are used. Due to the limitations of a single Surround Channel, modern Surround Sound systems always include at least two distinct Surround Channels.



For more information, see the glossary definitions for:

5.1 Audio 7.1 Audio AAC AAC LC AacPlus v2 AC-3 VS AC3 AUDIO_TS Dolby Dolby Digital Dolby Digital Plus Dolby Pro Logic Dolby Pro Logic II Dolby Surround Dolby TrueHD Downmix DTS DTS-HD DVD-A DVD-Audio DVD-Audio Zone DVD-Video DVD-Video Zone Frequency HE-AAC LPCM MP2 MP3 MP3+G MPA Muxing Nyquist-Shannon Sampling Theorem Rear Channel Surround Sound

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