Are the types of decoders of multi-channel soundtracks found on DVDs and videocassettes.
\r\nDolby Digital in most cases will provide good sound quality for a mobile theater system. Dolby Digital can allow anything from 1 to 6 channels (front right, front left, rear right, rear left, center and subwoofer) of sound be decoded and then passed on to any receiver with 6-channel inputs.
\r\nPro-Logic and Pro-Logic II are methods of encoding 4 channels for Pro-Logic (left, right, center, surround) and 5 channels for Pro-Logic II (left, right, center, left surround, right surround), into a stereo (left, right) channel format to be then decoded back into 4 or 5 channels with the proper decoder. Pro-Logic technology is widely used as it can be encoded into any form of stereo audio stream, including digital files such as mpeg-1/2, MP3, audio CD's, and VHS tapes.
\r\nDTS Decoding is a little like Dolby Digital, it is a 6-channel digital surround format that provides a separate channel of sound to five speakers (right, center, left, right surround, left surround), and a subwoofer. There are fewer DTS than Dolby Digital recordings today, but popularity seems to be on the rise.
\r\n