A Numerical Study into Perceptually-Weighted Spectral Differences between Differently-Spaced HRTFs

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Spatial audio rendering techniques often make assumptions about head-related transfer functions to simplify the reproduction process, however, state-of-the-art techniques require critical consideration of the transfer function accuracy. This paper uses boundary-element method HRTFs to investigate the perceptual spectral differences (PSD) that arise with distance and angle discrepancies. PSD between HRTFs at various radial distances is calculated, and between HRTFs in head- and ear-centred systems as function of radial distance. The distance at which the average and maximum PSD falls below the threshold of perception is determined. HRTF average variation reaches perceptual limits by 2–3 m, however, perceivable PSD values occur up to and beyond 10 m, indicating care must be taken when approximating either the distance or angular location of HRTFs.
Original languageEnglish
Title of host publicationAES International Conference on Immersive and Interactive Audio
PublisherAudio Engineering Society
Number of pages10
Publication statusPublished - 17 Mar 2019
EventAudio Engineering Society: International Conference on
Immersive and Interactive Audio
- York, United Kingdom
Duration: 27 Mar 201929 Mar 2019
http://www.aes.org/conferences/2019/immersive/

Conference

ConferenceAudio Engineering Society: International Conference on
Immersive and Interactive Audio
Country/TerritoryUnited Kingdom
CityYork
Period27/03/1929/03/19
Internet address

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