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In a listening experiment with 24 participants, the localization accuracy of dynamic binaural synthesis employing individual and estimated head-related transfer functions (HRTFs) was compared to the localization accuracy with generic HRTFs in vertical and horizontal direction. The experiment featured five different HRTF estimation methods, high-frequency audiometry, proximal pointing, and individual headphone equalization. While generic Knowles Electronics Mannikin for Acoustic Research (KEMAR) HRTFs served as a baseline, individually measured ones provided a reference. Estimated HRTFs were acquired based on anthropometric data and 3D head models by means of an interaural time difference adaptation, a selection from an HRTF database, a principal component-based synthesis, and a numerical HRTF simulation. Compared to the KEMAR, measured and estimated HRTFs produced significantly smaller vertical errors, while differences in terms of the horizontal error were not significant. The HRTF synthesis qualified as the preferred estimation method by significantly reducing the vertical error for virtual sources on and below the horizontal plane, compared to the generic HRTFs.
Author (s): Frankenbach, Cornelius; Herzog, Carsten; Seitz, Julia; Fels, Janina
Affiliation:
Institute for Hearing Technology and Acoustics, RWTH Aachen University, Aachen, Germany; Institute for Hearing Technology and Acoustics, RWTH Aachen University, Aachen, Germany; Research Department, BMW Group, Garching, Germany; Research Department, BMW Group, Garching, Germany
(See document for exact affiliation information.)
Publication Date:
2025-01-07
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Permalink: https://aes2.org/publications/elibrary-page/?id=22790
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Frankenbach, Cornelius; Herzog, Carsten; Seitz, Julia; Fels, Janina; 2025; Evaluating Localization Accuracy of Dynamic Binaural Synthesis: Differences Between Individual, Estimated, and Generic HRTFs [PDF]; Institute for Hearing Technology and Acoustics, RWTH Aachen University, Aachen, Germany; Institute for Hearing Technology and Acoustics, RWTH Aachen University, Aachen, Germany; Research Department, BMW Group, Garching, Germany; Research Department, BMW Group, Garching, Germany; Paper ; Available from: https://aes2.org/publications/elibrary-page/?id=22790
Frankenbach, Cornelius; Herzog, Carsten; Seitz, Julia; Fels, Janina; Evaluating Localization Accuracy of Dynamic Binaural Synthesis: Differences Between Individual, Estimated, and Generic HRTFs [PDF]; Institute for Hearing Technology and Acoustics, RWTH Aachen University, Aachen, Germany; Institute for Hearing Technology and Acoustics, RWTH Aachen University, Aachen, Germany; Research Department, BMW Group, Garching, Germany; Research Department, BMW Group, Garching, Germany; Paper ; 2025 Available: https://aes2.org/publications/elibrary-page/?id=22790
@article{frankenbach2025evaluating,
author={frankenbach cornelius and herzog carsten and seitz julia and fels janina},
journal={journal of the audio engineering society},
title={evaluating localization accuracy of dynamic binaural synthesis: differences between individual, estimated, and generic hrtfs},
year={2025},
volume={73},
issue={1/2},
pages={05-23},
month={february},}
TY – paper
TI – Evaluating Localization Accuracy of Dynamic Binaural Synthesis: Differences Between Individual, Estimated, and Generic HRTFs
SP – 05 EP – 23
AU – Frankenbach, Cornelius
AU – Herzog, Carsten
AU – Seitz, Julia
AU – Fels, Janina
PY – 2025
JO – Journal of the Audio Engineering Society
VO – 73
IS – 1/2
Y1 – February 2025