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http://dx.doi.org/10.5050/KSNVN.2008.18.2.199

HRTF-field Reproduction for Robust Virtual Source Imaging  

Choi, Joung-Woo (삼성종합기술원, Computing & Intelligence Laboratory)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.18, no.2, 2008 , pp. 199-207 More about this Journal
Abstract
A hybrid technique that combines the advantages of binaural reproduction and sound field reproduction technique is proposed. The concept of HRTF-field, which is defined as the set of HRTFs corresponding to the various head dislocations, enables us to realize virtual source imaging over a wide area. Conventional binaural($2{\times}2$) reproduction system is redefined as a MIMO system composed of multiple control sources and multiple head locations, and HRTF variations corresponding to various head movement are quantified. Through the direct control of HRTF-field, reproduction error induced by head dislocation can be minimized in least-square-error sense, and consequential disturbances on the virtual source image can be reduced within a selected area. Simple lateralization examples are investigated, and the reproduction error of the proposed technique is compared to that of higher-order Ambisonics.
Keywords
Virtual Acoustics; Head-related Transfer Function; HRTF-field;
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