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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.
Author (s): Pahomov, Mikhail; Na, Sr., Yong Hyuk
Affiliation:
LG Electronics, Inc., St. Petersburg, Russia; LG Electronics, Inc., Seoul, South Korea
(See document for exact affiliation information.)
AES Convention: 139
Paper Number:9439
Publication Date:
2015-10-06
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Session subject:
Perception
Permalink: https://aes2.org/publications/elibrary-page/?id=17995
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Pahomov, Mikhail; Na, Sr., Yong Hyuk; 2015; Method for Objective Evaluation of Nonlinear Distortion [PDF]; LG Electronics, Inc., St. Petersburg, Russia; LG Electronics, Inc., Seoul, South Korea; Paper 9439; Available from: https://aes2.org/publications/elibrary-page/?id=17995
Pahomov, Mikhail; Na, Sr., Yong Hyuk; Method for Objective Evaluation of Nonlinear Distortion [PDF]; LG Electronics, Inc., St. Petersburg, Russia; LG Electronics, Inc., Seoul, South Korea; Paper 9439; 2015 Available: https://aes2.org/publications/elibrary-page/?id=17995