The Dolby B-type noise reduction system is widely used in consumer audio equipment. The requirements of the processor circuitry are discussed and the development of an integrated circuit to perform the processing function described. Design emphasis was placed on the elimination of external adjustments. The single monolithic chip contains the main circuit elements of the Dolby B-type system. Included are: four signal amplifiers, combining circuits, rectifier, variable rate integrator, overshoot suppressor, regulator circuitry, and a new highly accurate variable impedance stage.

Authors: Hoeft, W. H.; Gundry, Kenneth J.
Affiliations: Signetics Corporation, 811 East Arques Avenue, Sunnyvale, CA ; Dolby Laboratories Inc., 346 Clapham Road, London, England(See document for exact affiliation information.)
AES Convention: 47 (March 1974) Paper Number: H-2
Publication Date: March 1, 1974 Import into BibTeX
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=2554

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