What is interlaced? What is progressive?
3.22 What is Dolby Digital? (Last updated: 02/17/2002) Back to top Dolby Digital is a digital audio encoding method that provides ‘5.1’ surround sound, among other formats. With a proper system, you get five discrete channels of audio (left front, right front, center front, left rear, right rear) and a low frequency effects (LFE) channel (the ‘.1’) which usually goes directly to a sub-woofer. See also: 3.23 What is the difference between DD and Dolby Surround? 3.24 What is DTS? 3.23 What is the difference between DD and Dolby Surround? (Last updated: 02/17/2002) Back to top Dolby Surround (or ProLogic) is an analog audio encoding method that provides four-channel surround sound (left front, right front, center, rear). The separation between the channels is not as well-defined as with Dolby Digital and the single rear channel minimizes the effect of ‘positional audio’. That is, it’s very difficult to make something sound like it’s coming from behind your left shoulder. With Dolby Digita
