Dolby Surround
Encyclopedia : D : DO : DOL : Dolby Surround
Dolby Surround was the earliest consumer version of Dolby's multichannel analog film sound format Dolby Stereo.
When a Dolby Surround soundtrack is produced, four channels of audio information—left, center, right, and mono surround—are matrix-encoded onto two audio tracks. The stereo information is then carried on stereo sources such as videotapes, laserdiscs and television broadcasts from which the surround information can be decoded by a processor to recreate the original four-channel surround sound. Without the decoder, the information plays in standard stereo. The Dolby Surround decoding technology was updated during the 1980s and re-named Dolby Pro Logic. The term Dolby Surround is still used, however, to describe soundtracks that are matrix-encoded using this technique.
| Dolby Surround Matrix | Left | Right | Center | Surround |
|---|---|---|---|---|
| Left Total | 1.000 | 0.000 | 0.707 | j0.707 |
| Right Total | 0.000 | 1.000 | 0.707 | k0.707 |
From Wikipedia, the Free Encyclopedia. Original article here. Support Wikipedia by contributing or donating.
All text is available under the terms of the GNU Free Documentation License See Wikipedia Copyrights for details.