Methods for measuring impulse responses have problems when the system under test contains elements that are nonlinear. Before exploring a new approach to the problem, the authors explain the effects of nonlinearities on traditional impulse response techniques. They show how wide maximum-length sequences have advantages over existing techniques for measuring the linear component of the response. Then they illustrate how these advantages can be applied to multiple noise sequence measurements to measure nonlinear behavior using the diagonal Volterra series expansion of the impulse response of general nonlinear systems. This approach better characterizes the system being measured.

Authors: Kemp, Jonathan; Primack, Harel
Affiliations: Department of Music, University of St. Andrews, Fife, UK; AcousticEye Ltd., 4th HaRechev St., Tel-Aviv, Israel(See document for exact affiliation information.)
JAES Volume 59 Issue 12 pp. 953-963; December 2011
Publication Date: February 1, 2012

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