Dolby Surround was the earliest consumer version of Dolby`s multichannel analog film sound decoding format Dolby Stereo. It was introduced to the public in 1982 during the time home video recording formats (such as Betamax and VHS) were introducing Stereo and HiFi capability. The term Dolby Surround is used so as not to confuse theater surround (....
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http://en.wikipedia.org/wiki/Dolby_Surround
Or Dolby Stereo. Four audio channels (left, center, right, and surround) converted to two channels r
Found on
https://www.encyclo.co.uk/local/22375
No exact match found.
