In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 117, No. 4_Supplement ( 2005-04-01), p. 2580-2580
Abstract:
Computational models of head-related transfer functions (HRTFs) are useful in investigating the effects of echoes and reverberations in enclosures. These models may be computed at relatively low cost by geometric methods, such as the image source method. However, geometric methods typically ignore several important physical effects, such as diffraction, which effect the fidelity of the resulting HRTF. On the other hand, methods based on solving the wave equation, such as the finite element method, include these effects but tend to be computationally expensive. This study represents a Dirichlet-to-Neumann (DtN) map which significantly reduces the costs associated with using the the finite element method for computing HRTFs in a rectangular room, by analytically eliminating empty regions of the room. The DtN map for rooms with realistic impedance boundary conditions is developed. This work represents an extension of our previous approach for sound-hard rooms [Y. Naka, A.A. Oberai, and B.G. Shinn-Cunningham, Proc. 18th International Congress on Acoustics, Vol. IV, pp. 2477–2480 (2004)]. [Work supported by AFOSR.]
Type of Medium:
Online Resource
ISSN:
0001-4966
,
1520-8524
Language:
English
Publisher:
Acoustical Society of America (ASA)
Publication Date:
2005
detail.hit.zdb_id:
1461063-2
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