Preferred levels for background ducking to produce esthetically pleasing audio for TV with clear speech

Torcoli, M, Freke-Morin, A, Paulus, J, Simon, C and Shirley, BG ORCID: https://orcid.org/0000-0001-9634-4489 2019, 'Preferred levels for background ducking to produce esthetically pleasing audio for TV with clear speech' , Journal of the Audio Engineering Society, 67 (12) , pp. 1003-1011.

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Abstract

In audio production, background ducking facilitates speech intelligibility while allowing the background to fulfill its purpose, e.g., to create ambience, set the mood, or convey semantic cues. Technical details for recommended ducking practices are not currently documented in the literature. Hence, we first analyzed common practices found in TV documentaries. Second, a listening test investigated the preferences of 22 normal-hearing participants on the Loud- ness Difference (LD) between commentary and background during ducking. Highly personal preferences were observed, highlighting the importance of object-based personalization. Sta- tistically significant difference was found between non-expert and expert listeners. On average, non-experts preferred LDs that were 4 LU higher than the ones preferred by experts. A sta- tistically significant difference was also found between Commentary over Music (CoM) and Commentary over Ambience (CoA). Based on the test results, we recommend at least 10 LU difference for CoM and at least 15 LU for CoA. Moreover, a computational method based on the Binaural Distortion-Weighted Glimpse Proportion (BiDWGP) was found to match the median preferred LD for each item with good accuracy (mean absolute error = 1.97 LU ± 2.50).

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre
Journal or Publication Title: Journal of the Audio Engineering Society
Publisher: Audio Engineering Society (AES)
ISSN: 1549-4950
Related URLs:
Depositing User: Dr Ben Shirley
Date Deposited: 14 Feb 2020 09:25
Last Modified: 03 Apr 2020 09:55
URI: http://usir.salford.ac.uk/id/eprint/56447

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