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Convention Paper

Eliminating Transducer Distortion in Acoustic Measurements

Authors: Agerkvist, Finn; Torras-Rosell, Antoni; McWalter, Richard

AES Convention 137 · Paper 9204 · October 2014

Abstract

This paper investigates the influence of nonlinear components that contaminate the linear response of acoustic transducers and presents a method for eliminating the influence of nonlinearities in acoustic measurements. The method is evaluated on simulated as well as experimental data and is shown to perform well even in noisy conditions. The limitations of the Total Harmonic Distortion, THD, measure is discussed and a new distortion measure, Total Distortion Ratio, TDR, which more accurately describes the amount of nonlinear power in the measured signal, is proposed.

Details

Published in
AES Convention 137
AES Convention
137
Paper number
9204
Publication date
October 6, 2014
Session subject
Signal Processing
Affiliation
Technical University of Denmark, Kgs. Lyngby, Denmark; Danish National Metrology Institute, Lyngby, Denmark (See document for exact affiliation information.)
Type
Convention Paper