Document Detail


Where did that sound come from? Comparing the ability to localise using audification and audition.
MedLine Citation:
PMID:  21923566     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Purpose: A prototype device was developed to allow individuals to hear ultrasound reflections off environmental obstacles. Previous studies have shown that this device allows for better distance judgement than audition and allows for effective passage through the centreline of apertures. The purpose of this research was to evaluate audification as a method to localise direct sound sources as compared to audition. Method: In an anechoic environment, participants localised point-sound sources for three conditions: auditory, audified ultrasound with receivers facing laterally, and audified ultrasound with receivers facing forward. Results: Azimuth localisation was similar within a range of-35° to 35° in front of the participant among all conditions. At the periphery,-70° and 70°, audified ultrasound was more accurate than audition for novice participants. No difference was evident in user elevation accuracy for these signals among the different conditions. Conclusion: Audification of ultrasound can be effective for localising point-source sounds in the azimuth direction, but more evidence is required to evaluate accuracy in the vertical direction. [Box: see text].
Authors:
T Claire Davies; Shane D Pinder; George Dodd; Catherine M Burns
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-9-17
Journal Detail:
Title:  Disability and rehabilitation. Assistive technology     Volume:  -     ISSN:  1748-3115     ISO Abbreviation:  -     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-9-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101255937     Medline TA:  Disabil Rehabil Assist Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
University of Auckland, Mechanical Engineering , Auckland , New Zealand.
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