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Conference Paper Open Access

Effects of binaural rendering personalisation and reverberation on speech-on-speech masking

Authors: Daugintis, Rapolas; Alary, Benoît; Geronazzo, Michele; Picinali, Lorenzo

AES 2024 International Conference on Audio for Virtual and Augmented Reality · Paper 22 · August 2024

Abstract

This study investigates the effect of head-related transfer function (HRTF) personalisation on understanding binaurally rendered target speech masked by interfering speakers in reverberant conditions. During a listening test, participants had to identify a correct colour-number combination from a virtual talker rendered in front of them while ignoring two interfering talkers positioned either in front or at the back. The sound was rendered with either an individual HRTF or one of two non-individual ones. These were selected for each participant as the best or the worstmatching from the same HRTF dataset, based on predictions of a computational auditory model for sound localisation. Two types of reverb from measured spatial room impulse responses (SRIRs) were applied to the speech: realistic dichotic reverberation decoded from 4th-order Ambisonic SRIRs or diotic reverb based on the omnidirectional Ambisonic channel IR as a baseline. Preliminary results show that realistic dichotic reverb improves speech perception when interfering speech is co-located with the target. No significant differences were observed across HRTF conditions on a group level, but individual HRTF-related performance differences exist, requiring further intra-subject analyses and data collection to characterise the individual results.

Details

Published in
AES 2024 International Conference on Audio for Virtual and Augmented Reality
Paper number
22
Publication date
August 5, 2024
Session subject
Audio for Virtual and Augmented Reality
Affiliation
Audio Experience Design, Dyson School of Design Engineering, Imperial College London, UK; STMS, IRCAM, Sorbonne Université, CNRS, Ministère de la Culture Paris, France; Audio Experience Design, Dyson School of Design Engineering, Imperial College London, UK, and Department of Engineering and Management, University of Padova, Italy; Audio Experience Design, Dyson School of Design Engineering, Imperial College London, UK (See document for exact affiliation information.)
Type
Conference Paper