Chapter 1: Technical overview
Dolby® Digital 5.1
Just as the ATSC has specified 1080i or 720p as the video formats required for HDTV, they have also specified a recommended audio format: Dolby Digital 5.1. Dolby Digital 5.1 provides 5 discrete channels of digital audio information for use by A/V receivers capable of decoding the 5.1 channel signal. The audio signals are broken into
Not all Digital TV programming is broadcast using Dolby Digital 5.1. For DIRECTV® programming, you can see which programs are broadcast using this
To take full advantage of the Dolby Digital 5.1 capabilities of the DIRECTV® High- Definition Receiver, you will need a Dolby Digital 5.1 compatible A/V receiver connected to the DIRECTV HD Receiver through the Dolby Digital Optical jack or the Dolby Digital Coaxial jack.
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