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Journal Article

Dynamic Range Control of Digital Audio Signals

Authors: McNally, Guy W.

Journal of the Audio Engineering Society · Volume 32 · Issue 5 · pp. 316–327 · May 1984

Abstract

Dynamic methods for controlling the dynamic range of digitally coded audio signals are described. Block diagram representations are given for the realization of both static and dynamic characteristics of a dynamic range controller. The methods for calculating the coefficients that represent the controlling parameters are derived, and the effect of restricting the accuracy of the processing by the use of fixed-wordlength arithmetic is examined. One form of distortion introduced because of this restricted accuracy processing can be described as "zipper" noise. It was successfully removed by adaptive smoothing of the gain-control signal. The techniques were verified using a high-speed audio signal processor, thereby confirming that practical real-time digital dynamic range control is feasible.

Details

Publication
Journal of the Audio Engineering Society
Volume
32
Issue
5
Pages
316–327
Publication date
May 6, 1984
Affiliation
BBC Research Department, Kingswood Warren, Tadworth, Surrey, UK (See document for exact affiliation information.)
Type
Journal Article