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Dolby A


The first noise reduction process developed by Dolby Labs. Introduced in 1965, it was designed for use by professional recording studios to make quiet master tape recordings. In the early to mid 1970’s its use was extended to film recording studios and motion picture release prints in order to make films sound better. Almost every recording studio making analog master tapes, whether for film or strictly audio applications, will have A-type equipment manufactured by Dolby Laboratories.

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