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Subjective equivalence of sinusoidal and random whole-body vibration

Subjective equivalence of sinusoidal and random whole-body vibration
Subjective equivalence of sinusoidal and random whole-body vibration

An experiment conducted to compare the discomfort produced by whole-body sinusoidal vibration with that produced by one-third-, one-, and three-octave vibration spectra is described. Seated subjects were required to adjust the level of a variable test vibration such that it produced a degree of discomfort similar to that caused by a 10-Hz sinusoidal vertical whole-body vibration at 0.75 m/sec2 rms. The test stimuli were nine sinusoidal vibrations (at 3.15, 4.00, 5.00, 6.30, 8.00, 10.00, 12.50, 16.00, and 20 Hz); nine one-third-octave bands of random vibration centered at the above frequencies, three single-octave bands (centered at 4.00, 8.00, and 16.00 Hz) and a three-octave band (centered at 8.00 Hz). The results obtained by this method indicate that the mean equivalent discomfort produced by all the random motions employed in the experiment may be predicted by weighting the vibration spectra with a filter network. A suitable filter response is that determined from a contour of equal comfort for sinusoidal or one-third-octave random vibration.

0001-4966
1140-1145
Griffin, Michael J.
24112494-9774-40cb-91b7-5b4afe3c41b8
Griffin, Michael J.
24112494-9774-40cb-91b7-5b4afe3c41b8

Griffin, Michael J. (1976) Subjective equivalence of sinusoidal and random whole-body vibration. Journal of the Acoustical Society of America, 60 (5), 1140-1145. (doi:10.1121/1.381215).

Record type: Article

Abstract

An experiment conducted to compare the discomfort produced by whole-body sinusoidal vibration with that produced by one-third-, one-, and three-octave vibration spectra is described. Seated subjects were required to adjust the level of a variable test vibration such that it produced a degree of discomfort similar to that caused by a 10-Hz sinusoidal vertical whole-body vibration at 0.75 m/sec2 rms. The test stimuli were nine sinusoidal vibrations (at 3.15, 4.00, 5.00, 6.30, 8.00, 10.00, 12.50, 16.00, and 20 Hz); nine one-third-octave bands of random vibration centered at the above frequencies, three single-octave bands (centered at 4.00, 8.00, and 16.00 Hz) and a three-octave band (centered at 8.00 Hz). The results obtained by this method indicate that the mean equivalent discomfort produced by all the random motions employed in the experiment may be predicted by weighting the vibration spectra with a filter network. A suitable filter response is that determined from a contour of equal comfort for sinusoidal or one-third-octave random vibration.

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More information

Published date: 1 January 1976

Identifiers

Local EPrints ID: 429270
URI: http://eprints.soton.ac.uk/id/eprint/429270
ISSN: 0001-4966
PURE UUID: 9a38d854-ece7-48cb-b438-2f9da000268e
ORCID for Michael J. Griffin: ORCID iD orcid.org/0000-0003-0743-9502

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Date deposited: 25 Mar 2019 17:30
Last modified: 26 Mar 2019 01:38

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