A Perceptual Evaluation of Individual and Non-Individual HRTFs: A Case Study of the SADIE II Database
AudioLab, Communication Technologies Research Group, Department of Electronic Engineering, University of York, York YO10 5DD, UK
*
Author to whom correspondence should be addressed.
Appl. Sci. 2018, 8(11), 2029; https://doi.org/10.3390/app8112029
Received: 14 September 2018
/
Revised: 14 October 2018
/
Accepted: 18 October 2018
/
Published: 23 October 2018
(This article belongs to the Special Issue Psychoacoustic Engineering and Applications)
As binaural audio continues to permeate immersive technologies, it is vital to develop a detailed understanding of the perceptual relevance of HRTFs. Previous research has explored the benefit of individual HRTFs with respect to localisation. However, localisation is only one metric with which it is possible to rate spatial audio. This paper evaluates the perceived timbral and spatial characteristics of both individual and non-individual HRTFs and compares the results to overall preference. To that end, the measurement and evaluation of a high-resolution multi-environment binaural Impulse Response database is presented for 20 subjects, including the KU100 and KEMAR binaural mannequins. Post-processing techniques, including low frequency compensation and diffuse field equalisation are discussed in relation to the 8802 unique HRTFs measured for each mannequin and 2818/2114 HRTFs measured for each human. Listening test results indicate that particular HRTF sets are preferred more generally by subjects over their own individual measurements.
View Full-Text
Keywords:
perception; evaluation; timbre; HRTF; binaural; spatial audio; measurement; database
▼
Show Figures
Figure 1
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
MDPI and ACS Style
Armstrong, C.; Thresh, L.; Murphy, D.; Kearney, G. A Perceptual Evaluation of Individual and Non-Individual HRTFs: A Case Study of the SADIE II Database. Appl. Sci. 2018, 8, 2029. https://doi.org/10.3390/app8112029
AMA Style
Armstrong C, Thresh L, Murphy D, Kearney G. A Perceptual Evaluation of Individual and Non-Individual HRTFs: A Case Study of the SADIE II Database. Applied Sciences. 2018; 8(11):2029. https://doi.org/10.3390/app8112029
Chicago/Turabian StyleArmstrong, Cal, Lewis Thresh, Damian Murphy, and Gavin Kearney. 2018. "A Perceptual Evaluation of Individual and Non-Individual HRTFs: A Case Study of the SADIE II Database" Applied Sciences 8, no. 11: 2029. https://doi.org/10.3390/app8112029
Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.
