A method for measuring nonlinear systems having a Volterra series is presented. The Volterra series is the parallel combination of elements having series input and output filters around a power-law distortion, and may be used to represent a wide variety of systems combining filtering and memoryless distortion functions. The technique is to measure the system using a swept sinusoid at a variety of amplitudes, and to use least squares to first separate the element responses and then identify the unknown input and output filters.
Abel, Jonathan S.; Berners, David P.
Affiliation: Universal Audio, Inc.
AES Convention: 121 (October 2006) Paper Number: 6951
Publication Date: October 1, 2006
Subject: Signal Processing
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