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D. Romblom, and H. Bahu, "A Revision and Objective Evaluation of the 1-Pole 1-Zero Spherical Head Shadowing Filter," Paper P9-2, (2018 August.). doi: D. Romblom, and H. Bahu, "A Revision and Objective Evaluation of the 1-Pole 1-Zero Spherical Head Shadowing Filter," Paper P9-2, (2018 August.). doi:
Abstract: 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.

@article{romblom2018a,
author={romblom, david and bahu, hélène},
journal={journal of the audio engineering society},
title={a revision and objective evaluation of the 1-pole 1-zero spherical head shadowing filter},
year={2018},
volume={},
number={},
pages={},
doi={},
month={august},} @article{romblom2018a,
author={romblom, david and bahu, hélène},
journal={journal of the audio engineering society},
title={a revision and objective evaluation of the 1-pole 1-zero spherical head shadowing filter},
year={2018},
volume={},
number={},
pages={},
doi={},
month={august},
abstract={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.},}

TY - paper
TI - A Revision and Objective Evaluation of the 1-Pole 1-Zero Spherical Head Shadowing Filter
SP - EP -
AU - Romblom, David
AU - Bahu, Hélène
PY - 2018
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - August 2018 TY - paper
TI - A Revision and Objective Evaluation of the 1-Pole 1-Zero Spherical Head Shadowing Filter
SP - EP -
AU - Romblom, David
AU - Bahu, Hélène
PY - 2018
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - August 2018
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.