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Convention Paper

Method for Objective Evaluation of Nonlinear Distortion

Authors: Pahomov, Mikhail; Na, Sr., Yong Hyuk

AES Convention 139 · Paper 9439 · October 2015

Abstract

A perceptual method is presented for assessing nonlinear distortion audibility in sound systems with high distortion levels of the original signals (mobile devices). The method is based on the Perceptual Evaluation of Audio Quality (PEAQ) standard [1]. To estimate the audibility of non-linear distortion, generating a content-dependent multitone signal and extracting a distortion signal from it is proposed. Then, the distortion signal’s properties are measured. Next, a regression analysis is applied to combine the properties to derive a metric that denotes the overall audible harmonic distortion. Experimental results on mobile handsets are provided to verify the high accuracy of the method.

Details

Published in
AES Convention 139
AES Convention
139
Paper number
9439
Publication date
October 6, 2015
Session subject
Perception
Affiliation
LG Electronics, Inc., St. Petersburg, Russia; LG Electronics, Inc., Seoul, South Korea (See document for exact affiliation information.)
Type
Convention Paper