Dolby Stereo

A sound format made by Dolby Laboratories.

Dolby Stereo is a sound format made by Dolby Laboratories. There are two basic Dolby Stereo systems: the Dolby SVA (stereo variable-area) system used with optical soundtracks on 35mm film, and Dolby Stereo 70mm which refers to Dolby noise reduction on 6-channel magnetic soundtracks on 70mm prints. Dolby Pro Logic is the domestic equivalent of Dolby stereo and Dolby Surround is the name of the encoding technology used by playback software compatible with Dolby Pro Logic.

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