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Journal Article

Aspects of MLS Measuring Systems

Authors: Vanderkooy, John

Journal of the Audio Engineering Society · Volume 42 · Issue 4 · pp. 219–231 · April 1994

Abstract

A maximum-length sequence (MLS) has mathematical properties that makeit very useful as an excitation signal for measurement in audio and acoustics. The pathology of MLS systems when there is distortion of various kinds is explored. The resulting artifacts can falsify a reverberation plot, reduce the distortion immunity of the measurement system, and give rise to spurious reflections in the impulse response, to name a few negative aspects. On the other hand, MLS systems can also allow the determination of the total distortion of an electroacoustic system when excited by a signal of any desired spectrum, and sensitive tests for determining the presence of distortion are possible due to the time-domain separation of linear and nonlinear components.

Details

Publication
Journal of the Audio Engineering Society
Volume
42
Issue
4
Pages
219–231
Publication date
April 6, 1994
Affiliation
Department of Physics, University of Waterloo, Waterloo, Ont., Canada (See document for exact affiliation information.)
Type
Journal Article