DocumentCode :
1851908
Title :
Distance simulation in virtual audio displays
Author :
Brungart, Douglas S.
Author_Institution :
Wright State Univ., Dayton, OH, USA
fYear :
1993
fDate :
24-28 May 1993
Firstpage :
612
Abstract :
Advances in the field of audio virtual reality have focused on the simulation of direction in virtual audio displays. The potential to add elementary distance cues to these displays remains largely unexploited. A number of audio cues have been identified that provide exocentric, or relative, and egocentric, or absolute, distance information. Two of these cues, intensity and first-order reflections, are examined closely in this paper. These cues can be simulated in a virtual audio display using simple geometric calculations and digital signal processing techniques. A short experiment examining the effectiveness of these cues was performed. Subjects were asked to make absolute distance judgements based on simulated sound sources while listening to loudspeakers directly or binaural recordings. Half of the trials contained intensity cues only and half contained intensity and reflection cues. The results show that the subjects were able to rank the distances correctly in each condition, but the data fail to verify the effectiveness of the reflection cue when presented over headphones
Keywords :
acoustic signal processing; aerospace instrumentation; headphones; hearing; loudspeakers; speech analysis and processing; speech synthesis; virtual machines; absolute distance information; aerospace applications; audio cues; audio virtual reality; binaural recordings; digital signal processing; distance cues; distance simulation; effectiveness; entertainment; exocentric distance information; first-order reflections; floor reflection; headphones; intensity cues; loudspeakers; simulated sound sources; virtual audio displays; Acoustic reflection; Auditory displays; Azimuth; Delay effects; Force measurement; Frequency; Headphones; Humans; Transfer functions; Virtual reality;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Aerospace and Electronics Conference, 1993. NAECON 1993., Proceedings of the IEEE 1993 National
Conference_Location :
Dayton, OH
Print_ISBN :
0-7803-1295-3
Type :
conf
DOI :
10.1109/NAECON.1993.290868
Filename :
290868
Link To Document :
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