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Convention Paper

Frequency-Domain Interpolation of Empirical HRTF Data

Authors: Carty, Brian; Lazzarini, Victor

AES Convention 126 · Paper 7725 · May 2009

Abstract

This paper discusses Head Related Transfer Function (HRTF) based artificial spatialisation of audio. Two alternatives to the minimum phase method of HRTF interpolation are suggested, offering novel approaches to the challenge of phase interpolation. A phase truncation, magnitude interpolation technique aims to avoid complex preparation, manipulation or transformation of empirical HRTF data, and any inaccuracies that may be introduced by these operations. A second technique adds low frequency non-linear frequency scaling to a functionally based phase model. This approach aims to provide a low frequency spectrum more closely aligned to the empirical HRTF data. Test results indicate favorable performance of the new techniques.

Details

Published in
AES Convention 126
AES Convention
126
Paper number
7725
Publication date
May 6, 2009
Session subject
Spatial Audio and Spatial Perception
Affiliation
National University of Ireland, Maynooth, Ireland (See document for exact affiliation information.)
Type
Convention Paper