REAL-TIME BINAURAL AUDIO RENDERING IN THE NEAR FIELD

Publication Type:

Conference Paper

Source:

SMC Conference 2009 (2009)

URL:

files/proceedings/2009/289.pdf

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 a structural HRTF model and parameterization over anthro- pometrical measurements of a wide range of subjects.