Carty, Brian and Lazzarini, Victor
Binaural HRTF Based Spatialisation: New Approaches and Implementation.
DAFx 09 proceedings of the 12th International Conference on Digital Audio Effects, Politecnico di Milano, Como Campus, Sept. 1 - 4, Como, Italy.
New approaches to Head Related Transfer Function (HRTF)
based artificial spatialisation of audio are presented and discussed
in this paper. A brief summary of the topic of audio spatialisation
and HRTF interpolation is offered, followed by an appraisal
of the existing minimum phase HRTF interpolation
method. Novel alternatives are then suggested which essentially
approach the problem of phase interpolation more directly. The
first technique, based on magnitude interpolation and phase truncation,
aims to use the empirical HRTFs without the need for
complex data preparation or manipulation, while minimizing any
approximations that may be introduced by data transformations.
A second approach augments a functionally based phase model
with low frequency non-linear frequency scaling based on the
empirical HRTFs, allowing a more accurate phase representation
of the more relevant lower frequency end of the spectrum. This
more complex approach is deconstructed from an implementation
point of view. Testing of both algorithms is then presented,
which highlights their success, and favorable performance over
minimum phase plus delay methods.
||This research is supported by the Irish Research Council for Science,
Engineering and Technology: funded by the National Development
Plan and NUI Maynooth. V. Lazzarini’s work was
supported by An Foras Feasa.
||Binaural HRTF Based Spatialisation; Head Related Transfer Function; audio spatialisation;
||Faculty of Arts,Celtic Studies and Philosophy > Music
Dr Victor Lazzarini
||12 Jan 2011 16:15
|Journal or Publication Title:
||DAFx 09 proceedings of the 12th International Conference on Digital Audio Effects, Politecnico di Milano, Como Campus, Sept. 1 - 4, Como, Italy
||Dept. of Electronic Engineering, Queen Mary Univ. of London,
||An Foras Feasa, Irish Research Council for Science, Engineering and Technology (National Development Plan)
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