data = exp_engel2022(flag)
exp_engel2022(flag) reproduces figures of the study from Engel et al. (2022). This article investigates the effects of various HRTF preprocessing methods for Ambisonics rendering. The effects are assessed by applying a model for sound localization reijniers2014, a model for sound externalization baumgartner2021, and a model for speech reception jelfs2011.
The following flags can be specified:
'fig1' | Spherical harmonics spectra |
'fig2' | Mag/phase errors per spatial order |
'fig3' | ITD/ILD per spatial order |
'fig4' | Mag/phase errors per method |
'fig5' | ITD/ILD per method |
'fig6' | Loudness per direction |
'fig7' | Models outputs per spatial order |
For the calculations, an HRTF data set will be loaded from auxdata and represented as truncated spherical-harmonics HRTFs. Then, various rendering techniques will be applied and the results will be provided as input to the models.
Warning: The processing of HRTFs does not take a long time to generate (minutes). The model results may take long time to generate (hours). Both, the processed HRTFs and model results are available as cached data.
To display Fig.1 use :
exp_engel2022('fig1'); |
To display Fig.2 use :
exp_engel2022('fig2'); |
To display Fig.3 use :
exp_engel2022('fig3'); |
To display Fig.4 use :
exp_engel2022('fig4'); |
To display Fig.5 use :
exp_engel2022('fig5'); |
To display Fig.6 use :
exp_engel2022('fig6'); |
To display Fig.7 use :
exp_engel2022('fig7'); |
Engel, Isaac, Goodman, Dan F. M., and Picinali, Lorenzo. Assessing hrtf preprocessing methods for ambisonics rendering through perceptual models. Acta Acust., 6:4, 2022. [ DOI | http ]
R. Baumgartner and P. Majdak. Decision making in auditory externalization perception: model predictions for static conditions. Acta Acustica, 5:59, 2021. Publisher: EDP Sciences. [ DOI | .html ]
S. Jelfs, J. Culling, and M. Lavandier. Revision and validation of a binaural model for speech intelligibility in noise. Hearing Research, 2011.
J. Reijniers, D. Vanderleist, C. Jin, C. S., and H. Peremans. An ideal-observer model of human sound localization. Biological Cybernetics, 108:169--181, 2014.