Unlike common digital signal processing algorithms, dynamic range compressors are nonlinear systems with memory. Furthermore, there is no single established design approach. Thus, they allow for a large number of implementations, each with very different behavior. Following an analysis of the various design choices, the authors recommend feed-forward algorithms because they are stable and predictable. The detector is placed in the log domain after the gain computer since this generates a smooth envelope, no attack lag, and a variable knee width. Objective measures of compressor performance are also used and discussed, and source code and audio examples are available on line.

Authors: Giannoulis, Dimitrios; Massberg, Michael; Reiss, Joshua D.
Affiliation: Queen Mary University of London, London, UK
JAES Volume 60 Issue 6 pp. 399-408; June 2012
Publication Date: July 9, 2012 Import into BibTeX
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=16354

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