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Convention Paper

On Peak-Detecting and RMS Feedback and Feedforward Compressors

Authors: Abel, Jonathan S.; Berners, David P.

AES Convention 115 · Paper 5914 · October 2003

Abstract

Differential equations governing the behavior of first-order peak-detecting and RMS feedback and feedforward analog compressors are presented. Based on these equations, the relationship between feedback and feedforward compressor behavior is explored, and simple, accurate digital emulations are provided. Feedback and feedforward gain reduction trajectories are shown to be equivalent by transforming the feedback gain reduction into a feedforward gain reduction having a level-dependent time constant. This time constant has the effect of slowing down the transition into and out of compression, and accounts for much of the difference in compression character between the two architectures.

Details

Published in
AES Convention 115
AES Convention
115
Paper number
5914
Publication date
October 6, 2003
Session subject
Signal Processing
Affiliation
Universal Audio, Santa Cruz, CA (See document for exact affiliation information.)
Type
Convention Paper