Dolby Stereo Logo

Dolby Stereo is Dolby Laboratories' trademark for its various stereo sound formats.

Two basic systems used this name: the Dolby SVA (stereo variable-area) system used with optical sound tracks on 35mm film, and Dolby Stereo 70mm, which referred to Dolby noise reduction on 6-channel magnetic soundtracks on 70mm prints.

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