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Determination and validation of mix parameters for modifying envelopment in object-based audio

Francombe, Jon, Brookes, Timothy and Mason, Russell (2018) Determination and validation of mix parameters for modifying envelopment in object-based audio Journal of the Audio Engineering Society, 66 (3). pp. 127-145.

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Abstract

Envelopment is an important attribute of listener preference for spatial audio reproduction. Object-based audio offers the possibility of altering the rendering of an audio scene in order to modify or maintain perceptual attributes - including envelopment - if the relationships between attributes and mix parameters are known. In a method of adjustment experiment, mixing engineers were asked to produce mixes of four program items at low, medium, and high levels of envelopment, in 2-channel, 5-channel, and 22-channel reproduction systems. The participants could vary a range of level, position, and equalization parameters that can be modified in object-based audio systems. The parameters could be varied separately for different semantic object categories. Nine parameters were found to have significant relationships with envelopment; parameters relating to the horizontal and vertical spread of sources were shown to be most important. A follow-on experiment demonstrated that these parameters can be adjusted to produce a range of envelopment levels in other program items.

Item Type: Article
Divisions : Faculty of Arts and Social Sciences > School of Arts > Music
Authors :
NameEmailORCID
Francombe, Jonj.francombe@surrey.ac.uk
Brookes, TimothyT.Brookes@surrey.ac.uk
Mason, RussellR.Mason@surrey.ac.uk
Date : 19 March 2018
Funders : Engineering and Physical Sciences Research Council (EPSRC)
DOI : 10.17743/jaes.2018.0011
Grant Title : Grant S3A: Future Spatial Audio for an Immersive Listener Experience at Home
Copyright Disclaimer : This work is licensed under a Creative Commons Attribution 4.0 International License.
Depositing User : Clive Harris
Date Deposited : 18 Jan 2018 15:56
Last Modified : 11 Dec 2018 11:23
URI: http://epubs.surrey.ac.uk/id/eprint/845641

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