Imperial College London
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DrLorenzoPicinali

Faculty of Engineering, Dyson School of Design Engineering

Reader in Audio Experience Design
 
 
 
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Contact

 

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Location

 

Level 1 staff officeDyson BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Engel:2021:10.1121/10.0003437,
author = {Engel, Alonso-Martinez I and Henry, C and Amengual, Garí SV and Robinson, PW and Picinali, L},
doi = {10.1121/10.0003437},
journal = {Journal of the Acoustical Society of America},
title = {Perceptual implications of different Ambisonics-based methods for binaural reverberation},
url = {http://dx.doi.org/10.1121/10.0003437},
volume = {149},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Reverberation is essential for the realistic auralisation of enclosed spaces. However, it can be computationally expensive to render with high fidelity and, in practice, simplified models are typically used to lower costs while preserving perceived quality. Ambisonics-based methods may be employed to this purpose as they allow us to render a reverberant sound field more efficiently by limiting its spatial resolution. The present study explores the perceptual impact of two simplifications of Ambisonics-based binaural reverberation that aim to improve efficiency. First, a “hybrid Ambisonics” approach is proposed in which the direct sound path is generated by convolution with a spatially dense head related impulse response set, separately from reverberation. Second, the reverberant virtual loudspeaker method (RVL) is presented as a computationally efficient approach to dynamically render binaural reverberation for multiple sources with the potential limitation of inaccurately simulating listener's head rotations. Numerical and perceptual evaluations suggest that the perceived quality of hybrid Ambisonics auralisations of two measured rooms ceased to improve beyond the third order, which is a lower threshold than what was found by previous studies in which the direct sound path was not processed separately. Additionally, RVL is shown to produce auralisations with comparable perceived quality to Ambisonics renderings.
AU  - Engel,Alonso-Martinez I
AU  - Henry,C
AU  - Amengual,Garí SV
AU  - Robinson,PW
AU  - Picinali,L
DO  - 10.1121/10.0003437
PY  - 2021///
SN  - 0001-4966
TI  - Perceptual implications of different Ambisonics-based methods for binaural reverberation
T2  - Journal of the Acoustical Society of America
UR  - http://dx.doi.org/10.1121/10.0003437
UR  - http://hdl.handle.net/10044/1/86822
VL  - 149
ER  -
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