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Anthropometric Parameters Influencing Head-Related Transfer Functions

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This study deals with the question of how much influence the head, torso, and pinna dimensions have on spatial hearing, particularly as far as children and their growth are concerned. A statistical analysis of head, torso, and pinna dimensions of subjects including children and adults of all ages has been conducted for the first time to create a detailed database. Spatial cues are derived from CAD1 models of the head using the Boundary Element Method (BEM) with a basic simplified model. Anthropometric parameters for the head and torso (height, breadth, length, and the distance from the ear to the shoulder) and for the pinna (height, breadth, and rotation angle, and cavum concha height, depth, and breadth) are analyzed and their effects are discussed. Varying each parameter individually makes it possible to isolate the effect of this parameter on the HRTF and on the spatial cues. The same approach is taken for various incidence angles. As far as the future construction of artificial heads for specific groups of population, including various ages, is concerned, the results presented here show where larger tolerances are acceptable regarding the different dimensions and where the dimensions should be chosen more accurately.
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Document Type: Research Article

Publication date: March 1, 2009

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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