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Summary: REAL-TIME BINAURAL AUDIO RENDERING IN THE NEAR FIELD
Simone Spagnol
University of Padova
spagnols@dei.unipd.it
Federico Avanzini
University of Padova
avanzini@dei.unipd.it
ABSTRACT
This paper considers the problem of 3-D sound rendering
in the near field through a low-order HRTF model. Here
we concentrate on diffraction effects caused by the human
head which we model as a rigid sphere. For relatively close
source distances there already exists an algorithm that gives
a good approximation to analytical spherical HRTF curves;
yet, due to excessive computational cost, it turns out to be
impractical in a real-time dynamic context. For this reason
the adoption of a further approximation based on principal
component analysis, which can significantly speed up spher-
ical HRTF computation, is proposed. The model resulting
from such an approach is suitable for future integration in
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