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Passenger ride quality within a noise and vibration environmentThe subjective response to noise and vibration stimuli was studied in a ride quality simulator to determine their importance in the prediction of passenger ride quality. Subjects used category scales to rate noise discomfort, vibration discomfort, both noise and vibration discomfort, and overall discomfort in an effort to evaluate parametric arrangements of noise and vibration. The noise stimuli were composed of octave frequency bands centered at 125, 250, 2,000 and 4,000 Hz, each presented at 70, 75, 80, and 85 dB(A). The vertical vibration stimuli were 5 Hz bandwidth random vibrations centered at 3, 5, 7, and 9 Hz, each presented at 0.03, 0.06, 0.09, and 0.12 grms. Analyses were directed at (1) a determination of the subject's ability to separate noise and vibration as contributors to discomfort, (2) an assessment of the physical characteristics of noise and vibration that are needed for prediction of ride quality in this type of multifactor environment, and (3) an evaluation of the relative contribution of noise and vibration to passenger ride quality.
Document ID
Document Type
Technical Memorandum (TM)
Dempsey, T. K.
(NASA Langley Research Center Hampton, VA, United States)
Leatherwood, J. D.
(NASA Langley Research Center Hampton, VA, United States)
Drezek, A. B.
(Northrop Services)
Date Acquired
September 3, 2013
Publication Date
April 1, 1976
Subject Category
Behavioral Sciences
Report/Patent Number
Accession Number
Funding Number(s)
PROJECT: RTOP 504-09-21-01
Distribution Limits
Work of the US Gov. Public Use Permitted.
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