Categorisation of distortion profiles in relation to audio quality

Wilson, AD ORCID: and Fazenda, BM ORCID: 2014, Categorisation of distortion profiles in relation to audio quality , in: 17th International Conference on Digital Audio Effects (DAFx-14), 1-5 Sept 2014, Erlangen, Germany.

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Since digital audio is encoded as discrete samples of the audio waveform, much can be said about a recording by the statistical properties of these samples. In this paper, a dataset of CD audio samples is analysed; the probability mass function of each audio clip informs a feature set which describes attributes of the musical recording related to loudness, dynamics and distortion. This allows musical recordings to be classified according to their “distortion character”, a concept which describes the nature of amplitude distortion in mastered audio. A subjective test was designed in which such recordings were rated according to the perception of their audio quality. It is shown that participants can discern between three different distortion characters; ratings of audio quality were significantly different (F(1; 2) = 5:72; p < 0:001; eta^2 = 0:008) as were the words used to describe the attributes on which quality was assessed (�Chi^2(8; N = 547) = 33:28; p < 0:001).This expands upon previous work showing links between the effects of dynamic range compression and audio quality in musical recordings, by highlighting perceptual differences.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Audio Quality, Perception, Distortion, Loudness
Themes: Media, Digital Technology and the Creative Economy
Subjects outside of the University Themes
Schools: Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre
Journal or Publication Title: 17th International Conference on Digital Audio Effects
Refereed: Yes
ISBN: 9783000468254
Funders: Non funded research
Depositing User: Alex Wilson
Date Deposited: 09 Sep 2014 13:17
Last Modified: 25 Nov 2019 16:00

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