Effect of whole-body vibration in combined axes and with noise on subjective evaluation of ride quality

The relative discomfort caused by noise and vibration, how this depends on the level of noise and the magnitude of vibration, and whether the noise and vibration are presented simultaneously or sequentially has been investigated in a laboratory study with 20 subjects. Noise and vertical vibration were reproduced with all 49 combinations of seven levels of noise and seven magnitudes of vibration to allow the discomfort caused by one of the stimuli to be judged relative to the other stimulus using magnitude estimation. In four sessions, subjects judged noise relative to vibration and vibration relative to noise, with both simultaneous and sequential presentations of the stimuli. The equivalence of noise and vibration was not greatly dependent on whether the stimuli were simultaneous or sequential, but highly dependent on whether noise was judged relative to vibration or vibration was judged relative to noise. When judging noise, higher magnitude vibrations appeared to mask the discomfort caused by low levels of noise. When judging vibration, higher levels of noise appeared to mask the discomfort caused by low magnitudes of vibration. The judgement of vibration discomfort was more influenced by noise than the judgment of noise discomfort was influenced by vibration. PACs: 43.40.Ng, 43.50.Qp, 43.66.Wv Published as: The effects of sound level and vibration magnitude on the relative discomfort of noise and vibration Huang, Y. & Griffin, M. J.

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Effect of whole-body vibration in combined axes and with noise on subjective evaluation of ride quality

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The discomfort produced by noise and whole-body vertical vibration presented separately and in combination

The effects of sound level and vibration magnitude on the relative discomfort of noise and vibration

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