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 > Department of Music and Media
Authors :	Name Email ORCID Francombe, Jon j.francombe@surrey.ac.uk Brookes, Timothy T.Brookes@surrey.ac.uk Mason, Russell R.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 :	05 Mar 2019 10:13
URI:	http://epubs.surrey.ac.uk/id/eprint/845641

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