URL:

files/proceedings/2010/62.pdf

Abstract:

This paper faces the general problem of modeling pinna- related transfer functions (PRTFs) for 3-D sound render- ing. Following a structural modus operandi, we exploit an algorithm for the decomposition of PRTFs into ear reso- nances and frequency notches due to reflections over pinna cavities in order to deliver a method to extract the frequen- cies of the most important spectral notches. Ray-tracing analysis reveals a convincing correspondence between ex- tracted frequencies and pinna cavities of a bunch of sub- jects. We then propose a model for PRTF synthesis which allows to control separately the evolution of resonances and spectral notches through the design of two distinct filter blocks. The resulting model is suitable for future integration into a structural head-related transfer function model, and for parametrization over anthropometrical mea- surements of a wide range of subjects.