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Compander-type Noise Reduction Systems

Filed under: archive operations,audio,history,project notes — 2010-02-20 by Richard L. Hess — Last Edit 2010-05-01 by Richard L. Hess

Note: This information has been incorporated into this page which contains a more in-depth discussion.

I received an urgent phone call yesterday from a man who had digitized several reels of 2″ 24-track analog recordings that he wished to re-mix.

The tapes were originally recorded in about 1978-1979 and he said that he needed them to have Dolby C noise-reduction processing applied to the files.

I did a bit of research, as that did not sound correct from an historic point of view.

Here is an approximate chronology of the major noise-reduction systems and their dates of introduction: (more…)



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