Once you hit play on your test download, listen carefully:
This report outlines the resources, testing methods, and technical details for Dolby Digital 5.1 surround sound test videos dolby digital 51 surround sound test video download hot
If you want the uncompressed, pure Dolby Digital experience, you need actual demo files. These are often found on enthusiast forums and manufacturer sites. Once you hit play on your test download,
To get the most accurate results, it is recommended to use "hot" or high-bitrate files that avoid the heavy compression sometimes found on standard streaming sites. What is Dolby Digital surround sound? - Xfinity Support pure Dolby Digital experience
Left and Right rear/side speakers for atmospheric effects.