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Journal Article Open Access

Perceived Audio Quality of Sounds Degraded by Nonlinear Distortions and Single-Ended Assessment Using HASQI

Authors: Kendrick, Paul; Li, Francis; Fazenda, Bruno; Jackson, Iain; Cox, Trevor

Journal of the Audio Engineering Society · Volume 63 · Issue 9 · pp. 698–712 · September 2015

Abstract

For field recordings and user-generated content recorded on phones, tablets, and other mobile devices, poor audio quality arises in part from nonlinear distortions caused by clipping and limiting at pre-amplification stages and by dynamic range control. Based on the Hearing Aid Sound Quality Index (HASQI), a single-ended method to quantify perceived audio quality in the presence of nonlinear distortions has been developed. Validations on music and soundscapes yielded single-ended estimates within ±0.19 of HASQI on a quality range from 0.0 and 1.0. Perceptual tests were carried out to validate the method for music and soundscapes. HASQI has also been shown to predict quality degradations for processes other than nonlinear distortions including additive noise, linear filtering, and spectral changes. By including these other causes of quality degradations, the current model for nonlinear distortion assessment could be expanded.

Details

Publication
Journal of the Audio Engineering Society
Volume
63
Issue
9
Pages
698–712
Publication date
September 6, 2015
Affiliation
Acoustics Research Centre, University of Salford, Salford, UK (See document for exact affiliation information.)
Type
Journal Article