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Psychoacoustic evaluation of listener localization accuracy for broadband and conventional reversing alarms.

Authors
Lakatos-S; Miller-GG
Source
16th International Congress on Sound and Vibration 2009, ICSV 2009, July 5-9, 2009, Krakow, Poland. Auburn, AL: International Institute of Acoustics and Vibrations, 2009 Jul; 7:4423-4430
Link
NIOSHTIC No.
20041987
Abstract
Two psychoacoustic tests were assessed to determine if the location and direction of vehicle-mounted alerting devices having broadband noise characteristics could be more accurately localized than those having a harmonic frequency spectrum. Reversing conditions were simulated by moving sample backup alarms on a linear sliding platform at a specified velocity. The tests moved the alarms at "direct hit" or "near miss" trajectories toward a KEMAR Manikin, with recordings repeated at 50 azimuthal increments. Participants listened to trajectories over headphones and selected the closest match from depictions of all possible trajectories. The tests revealed little or no substantive improvement in localization acuity for the alarm emitting a broadband noise signal.
Keywords
Mining-industry; Acoustics; Acoustic-signals; Acoustic-vibration; Laboratory-testing; Warning-systems; Warning-devices; Noise; Noise-analysis; Noise-control; Noise-frequencies; Motor-vehicles; Signal-devices; Sound; Hearing; Psychological-factors
Contact
Stephen Lakatos, Washington State University, Vancouver, WA 98686, USA
Publication Date
20090705
Document Type
Book or book chapter
Email Address
lakatos@vancouver.wsu.edu
Fiscal Year
2009
NTIS Accession No.
NTIS Price
ISBN No.
9781615677368
NIOSH Division
OMSHR
Source Name
16th International Congress on Sound and Vibration 2009, ICSV 2009, July 5-9, 2009, Krakow, Poland
State
WA; AL
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