This paper discusses an application of block-oriented modeling to a popular analog dynamic range compressor using iterative minimization. The reference device studied here is the UREI 1176LN, which has been widely used in music production and recording. A clone of the circuit built in a previous project has been used as a reference device to compare the results of the implementation. A parametric block-oriented model has been designed, improved, and tuned using the Levenberg-Marquardt iterative error minimization algorithm. Only input/output measurements have been performed following a gray-box modeling approach. Finally the model has been evaluated with objective scores and a listening test. This work led to very convincing modeling results.

Authors: Gerat, Etienne; Eichas, Felix; Zölzer, Udo
Affiliations: Helmut Schmidt University Hamburg, Hamburg, Germany; Helmut Schmidt University - Hamburg, Hamburg, Germany; Helmut-Schmidt-University Hamburg, Hamburg, Germany(See document for exact affiliation information.)
AES Convention: 143 (October 2017) Paper Number: 9852
Publication Date: October 8, 2017
Subject: Recording and Production

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