On the importance of impedance for perceptual relevance of HRTF

Ghorbal S, Bonjour X, Séguier R. On the importance of impedance for perceptual relevance of HRTF. In: AES Convention 148. Audio Engineering Society; 2020. Paper 10354. Available from: https://aes.org/publications/elibrary-page/?id=20771

@inproceedings{Ghorbal2020_20771,
  author = {Ghorbal, Slim and Bonjour, Xavier and Séguier, Renaud},
  title = {{On the importance of impedance for perceptual relevance of HRTF}},
  booktitle = {AES Convention 148},
  note = {Paper 10354},
  year = {2020},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=20771}
}

TY  - CPAPER
TI  - On the importance of impedance for perceptual relevance of HRTF
AU  - Ghorbal, Slim
AU  - Bonjour, Xavier
AU  - Séguier, Renaud
T2  - AES Convention 148
M1  - Paper 10354
PY  - 2020
DA  - 2020/05/06
UR  - https://aes.org/publications/elibrary-page/?id=20771
PB  - Audio Engineering Society
LA  - en
AB  - Head-Related Transfer Functions (HRTFs) are commonly seen as a way to achieve sound spatialisation. A lot of effort has been put to produce as many as possible and it often relies on acoustical measure or numerical simulation. However, for a given subject, noticeable differences exist between acoustic HRTFs and their computed counterparts. In this paper, keeping focused on one subject, we show that the acoustic impedance parameter used in simulation can explain the observed differences. We present two methods to get a frequency-dependant impedance that leads to perceptually relevant HRTFs. Those HRTFs are subjectively evaluated by localisation tests and compared to results obtained with measured HRTF, state-of-the-art HRTF and non-personalised HRTF. We also discuss the generalisation possibility of such approaches.
ER  -