Perceptual evaluation of blind source separation in object-based audio production

Coleman, Philip, Liu, Qingju, Francombe, Jon and Jackson, Philip (2018) Perceptual evaluation of blind source separation in object-based audio production In: 14th International Conference on Latent Variable Analysis and Signal Separation, 02-06 Jul 2018, University of Surrey, Guildford, UK.

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Abstract

Object-based audio has the potential to enable multime- dia content to be tailored to individual listeners and their reproduc- tion equipment. In general, object-based production assumes that the objects|the assets comprising the scene|are free of noise and inter- ference. However, there are many applications in which signal separa- tion could be useful to an object-based audio work ow, e.g., extracting individual objects from channel-based recordings or legacy content, or recording a sound scene with a single microphone array. This paper de- scribes the application and evaluation of blind source separation (BSS) for sound recording in a hybrid channel-based and object-based workflow, in which BSS-estimated objects are mixed with the original stereo recording. A subjective experiment was conducted using simultaneously spoken speech recorded with omnidirectional microphones in a rever- berant room. Listeners mixed a BSS-extracted speech object into the scene to make the quieter talker clearer, while retaining acceptable au- dio quality, compared to the raw stereo recording. Objective evaluations show that the relative short-term objective intelligibility and speech qual- ity scores increase using BSS. Further objective evaluations are used to discuss the in uence of the BSS method on the remixing scenario; the scenario shown by human listeners to be useful in object-based audio is shown to be a worse-case scenario.

Item Type:	Conference or Workshop Item (Conference Paper)
Divisions :	Faculty of Arts and Social Sciences > Department of Music and Media
Authors :	Name Email ORCID Coleman, Philip p.d.coleman@surrey.ac.uk Liu, Qingju q.liu@surrey.ac.uk Francombe, Jon j.francombe@surrey.ac.uk Jackson, Philip P.Jackson@surrey.ac.uk
Date :	6 June 2018
Funders :	Engineering and Physical Sciences Research Council (EPSRC)
DOI :	10.1007/978-3-319-93764-9_51
Grant Title :	EPSRC Programme Grant S3A: Future Spatial Audio for an Immersive Listener Experience at Home
Copyright Disclaimer :	© 2018 Springer Verlag
Related URLs :	Organisation Publisher
Additional Information :	Part of the Lecture Notes in Computer Science book series (LNCS, volume 10891)
Depositing User :	Clive Harris
Date Deposited :	05 Apr 2018 13:37
Last Modified :	05 Mar 2019 10:13
URI:	http://epubs.surrey.ac.uk/id/eprint/846119

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