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Convention Paper

Assessment of Nonlinearity in Transducers and Sound Systems – From THD to Perceptual Models

Authors: Voishvillo, Alex

AES Convention 121 · Paper 6910 · October 2006

Abstract

Research of audibility of loudspeaker nonlinear distortion has not shown good correlation between traditionally used metrics (harmonics and intermodulation) and the subjective performance. The problem of sound fidelity-related methods to assess nonlinearity in transducers has not been solved. Wide application of low-bit rate compression systems (MP3, etc.) demanded the development of objective measurement methods based on perceptual models. These methods however have not been used for measurement of loudspeakers and they may not be optimal for that due to the different nature of nonlinearity in transducers. Recently perceptual models created specifically for the assessment of nonlinearity in transducers have emerged. In this work analysis of the old and new methods, their comparison, and the prospects for future developments are discussed.

Details

Published in
AES Convention 121
AES Convention
121
Paper number
6910
Publication date
October 6, 2006
Session subject
Loudspeakers
Affiliation
JBL Professional (See document for exact affiliation information.)
Type
Convention Paper