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Journal Article

An Objective Audio Quality Measure Based on Power and Envelope Power Cues

Authors: Biberger, Thomas; Fleßner, Jan-Hendrik; Huber, Rainer; Ewert, Stephan D.

Journal of the Audio Engineering Society · Volume 66 · Issue 7/8 · pp. 578–593 · July 2018

Abstract

The generalized power spectrum model (GPSM), which has been shown to account for a large number of psychoacoustic and speech intelligibility (SI) experiments, was extended to assess audio quality. Like the GPSM, the suggested audio quality model, GPSMq, combines features from the power spectrum model (PSM) and envelope power-spectrum model (EPSM). GPSMq utilizes signal-to-noise ratios (SNRs) in the power and envelope power domains to model the addition or removal of energy by the signal processing under test. Four audio quality databases that introduce linear and nonlinear distortions to music and speech signals were assessed to cover a large variety of distortions cases. GPSMq provided better overall prediction performance than other state-of-the-art auditory-model-based objective quality measures. The results demonstrate that the power and envelope power SNR metric is appropriate for predicting audio quality for a variety of signal distortions in addition to psychoacoustics and SI. This supports the notion that the auditory system extracts a universal set of auditory features to be analyzed in a task-dependent decision stage.

Details

Publication
Journal of the Audio Engineering Society
Volume
66
Issue
7/8
Pages
578–593
Publication date
July 6, 2018
Affiliation
Medizinische Physik and Cluster of Excellence Hearing4all, Universität Oldenburg, Oldenburg, Germany; HörTech gGmbH and Cluster of Excellence Hearing4All, Oldenburg, Germany (See document for exact affiliation information.)
Type
Journal Article