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Convention Paper

Auditory Perception of Nonlinear Distortion

Authors: Geddes, Earl R.; Lee, Lidia W.

AES Convention 115 · Paper 5891 · October 2003

Abstract

A new metric to the perception of distortion was recently proposed by Geddes and Lee (2003). Psychoacoustical data were measured, correlation and regression analysis were applied to examine the relationship and predictive value of this new metric to the subjective assessment of sound quality of nonlinear distortion. Furthermore, conventional metrics such as total harmonic distortion (THD) and intermodulation distortion (IMD) were also compared. Thirty-four listeners participated in a listening task, rating twenty-one stimuli using a 7-point scale. No significant relationships were observed when comparing the subjective ratings with TDH and IMD metrics. Significant correlation (r=0.95, p<.001) was observed between the subjective ratings and the new proposed GedLee (Gm) metric. Furthermore, robust predictive power was verified utilizing the GedLee metric. GedLee metric has demonstrated remarkable potential to quantify sound quality ratings of nonlinear distortion.

Details

Published in
AES Convention 115
AES Convention
115
Paper number
5891
Publication date
October 6, 2003
Session subject
Psychoacoustics, Perception, and Listening Tests
Affiliation
Eastern Michigan University, Ypsilanti, MI ; GedLee LLC, Northville, MI (See document for exact affiliation information.)
Type
Convention Paper