INVESTIGATION OF HEAD-RELATED TRANSFER FUNCTIONS

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Authors
  1. Racansky, D.
  2. Tchernitser, A.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);Ryerson Polytechnic Univ, Toronto ONT (CAN) Dept of Mechanical Engineering
Abstract
This is the final report for the contract entitled Investigation of Head-Related Transfer Functions with the Defence and Civil Institute of Environmental Medicine. The objective of this work was to propose the methods for the measurement of head-related transfer functions (HRTFs), implementation of binaural filters derived from obtained data, and evaluation of the fidelity of resulting simulation of free-field listening over headphones. This required conducting an extensive literature search and a thorough review of all available and relevant literature sources. In addition, a review of sound localization of humans with emphasis on the factors governing or affecting the outcome of auditory processes that mediate localization was included in this work. A brief review of application areas is presented as well. Advances in computer technology have provided the means for development of techniques which allow sound to be hear spatially when presented over headphones. These techniques are based on a simple idea: if the acoustic signals in the two ears, generated by real acoustic events, are perfectly reproduced using artifical means, the complete auditory experience will be replicated. Three-dimensional (3-D) sound technology encompasses all techniques where the outer ears as well as the effects of sound field-human head interactions are either directly implemented or modeled as digital filters. TRUNCATED
Keywords
Spatial Auditory Display;3-D auditory display;Binaural technology;HRTF (Head Related Transfer Functions);Head Related Transfer Function (HRTF);Human Binaural Signal Detection Performance;Binaural localization;Sound localization;Virtual auditory space
Report Number
DCIEM-98-CR-43 — Contractor Report
Date of publication
01 Aug 1998
Number of Pages
194
DSTKIM No
98-02734
CANDIS No
509682
Format(s):
Hardcopy;Document Image stored on Optical Disk

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