Sequential and Direct Access of HRTFs for Quasi-Continuous Angular Positions

Authors:

Antweiler, C. ,  Vary, P.

Book Title:

Proceedings of European Signal Processing Conference (EUSIPCO)

Organization:

EURASIP

Pages:

p.p. 1648-1652

Date:

Aug. 2011

ISSN:

2076-1465

Language:

English

Abstract

Binaural rendering is based on head-related transfer functions (HRTFs) to reproduce the soundfield around the listener using stereo-headphones. Especially, for the perception of moving sound sources, a high angular resolution of the measured HRTFs is needed.
A continuous HRTF representation with quasi-infinite azimuthal resolution can be obtained with a system identification approach which relies on a sequentially recursive adaptation process. As a consequence, it enables by nature the sequential access of HRTFs, e.g., for the virtualization of rotating sound sources. However, so far the direct access of a HRTF of an arbitrary azimuthal position, for a sudden change of the sound source position, is not possible without knowledge of neighboring HRTFs.
To overcome this limitation, we present a new implementation strategy enabling a flexible, i.e., a sequential and direct, access of ‘Perfect Sequence LMS based HRTFs’. We will prove that we obtain numerically the same high-quality HRTFs as before, without increase of storage requirements, and a significantly reduced computational complextity.

Download

BibTeX

Copyright © by IKS
antweiler11.pdf

This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.

---