A Revision and Objective Evaluation of the 1-Pole 1-Zero Spherical Head Shadowing Filter

Romblom D, Bahu H. A Revision and Objective Evaluation of the 1-Pole 1-Zero Spherical Head Shadowing Filter. In: AES Conference: 2018 AES International Conference on Audio for Virtual and Augmented Reality. Audio Engineering Society; 2018. Paper P9-2. Available from: https://aes.org/publications/elibrary-page/?id=19696

@inproceedings{Romblom2018_19696,
  author = {Romblom, David and Bahu, Hélène},
  title = {{A Revision and Objective Evaluation of the 1-Pole 1-Zero Spherical Head Shadowing Filter}},
  booktitle = {AES Conference: 2018 AES International Conference on Audio for Virtual and Augmented Reality},
  note = {Paper P9-2},
  year = {2018},
  month = aug,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=19696}
}

TY  - CPAPER
TI  - A Revision and Objective Evaluation of the 1-Pole 1-Zero Spherical Head Shadowing Filter
AU  - Romblom, David
AU  - Bahu, Hélène
T2  - AES Conference: 2018 AES International Conference on Audio for Virtual and Augmented Reality
M1  - Paper P9-2
PY  - 2018
DA  - 2018/08/06
UR  - https://aes.org/publications/elibrary-page/?id=19696
PB  - Audio Engineering Society
LA  - en
AB  - Structural models of Head Related Transfer Functions attempt to decompose complex acoustic phenomena into constituent signal processing models. The work of Brown and Duda modeled the head with two elements: a pure delay estimated from a ray-tracing formula by Woodworth and a 1-pole 1-zero shadowing ?lter. The ray-tracing formula is valid for frequencies above ˜ 2kHz while interaural time delay (ITD) is perceptually signi?cant below ˜ 1.5kHz. The frequency-dependence of the phase-derived ITDp has been shown by many authors but is not accounted for by ray-tracing assumptions. As such, the shadowing ?lter must account for the low frequency variation in ITDp. Using a numerical approximation of Rayleigh’s solution as a reference, this paper evaluates and revises the work of Brown and Duda.
ER  -