Air Iuav archivio istituzionale della ricerca

La cupola della Cappella di Anet: indagine sui tracciati tridimensionali

Structural modeling of pinna-related transfer functions

This paper faces the general problem of modeling pinnarelated transfer functions (PRTFs) for 3-D sound rendering. Following a structural modus operandi, we exploit an algorithm for the decomposition of PRTFs into ear resonances and frequency notches due to reflections over pinna cavities in order to deliver a method to extract the frequencies of the most important spectral notches. Ray-tracing analysis reveals a convincing correspondence between extracted frequencies and pinna cavities of a b...

Estimation and modeling of pinna-related transfer functions

This paper considers the problem of modeling pinna-related transfer functions (PRTFs) for 3-D sound rendering. Following a structural modus operandi, we present an algorithm for the decomposition of PRTFs into ear resonances and frequency notches due to reflections over pinna cavities. Such an approach allows to control the evolution of each physical phenomenon separately through the design of two distinct filter blocks during PRTF synthesis. The resulting model is suitable for future integra...

Frequency estimation of the first pinna notch in head-related transfer functions with a linear anthropometric model

The relation between anthropometric parameters and Head-Related Transfer Function (HRTF) features, especially those due to the pinna, are not fully understood yet. In this paper we apply signal processing techniques to extract the frequencies of the main pinna notches (known as N1, N2, and N.3) in the frontal part of the median plane and build a model relating them to 13 different anthropometric parameters of the pinna, some of which depend on the elevation angle of the sound source. Results ...