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Dolby Analog Sr




developed by Dolby Laboratories and has been in common use in professional audio since 1986 . It is a revised version of the Dolby's earlier models, combining aspects of Dolby A, B and C (e.g. sliding band and fixed band companders) to improve the dynamic range of analogue recordings and transmissions by as much as 25 dB.

Dolby SR is used in almost all modern professional audio analogue (i.e. tape) recording by recording and postproduction engineers, broadcasters, and other audio professionals. Dolby analog soundtracks also incorporate Dolby SR technology.