Full-Sphere Binaural Direction-of-Arrival Estimation Incorporating Head Rotation Information

Authors:

Fleischhauer, E. ,  Jax, P.

Book Title:

Proceedings of European Signal Processing Conference (EUSIPCO)

Publisher:

EURASIP

Status:

accepted for publication

Date:

Sep. 2025

Language:

English

Abstract

We previously proposed movement-invariant beamforming (MIBF) as a binaural direction-of-arrival (DoA) estimator that incorporates head rotation information along the horizontal axis. We showed that including yaw head rotation information helps to resolve the front-back confusion problem and leads to a more robust DoA estimate during head movements. In this contribution, we extend MIBF by head rotation information along all three axes. We analyze how head rotations resolve cone-of-confusion (CoC) ambiguities through beampattern analysis and experiments on real data. We show that yaw rotations are most helpful to resolve front-back ambiguities and roll rotations are most helpful to resolve up-down ambiguities.

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