Human Factors Research Unit, Institute of Sound and Vibration Research, University of Southampton, Southampton SO17 1BJ, United Kingdom.
J Acoust Soc Am. 2012 Jun;131(6):4558-69. doi: 10.1121/1.4705285.
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 7 levels of noise and 7 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 level noises appeared to mask the discomfort caused by low magnitudes of vibration. The judgment of vibration discomfort was more influenced by noise than the judgment of noise discomfort was influenced by vibration.
在一项有 20 名受试者参与的实验室研究中，研究人员调查了噪声和振动引起的相对不适，这种不适程度取决于噪声水平和振动幅度，以及噪声和振动是同时呈现还是依次呈现。使用量级估计法，通过噪声和垂直振动的所有 49 种 7 个噪声水平和 7 个振动幅度的组合来重现噪声和垂直振动，以比较一种刺激引起的不适与另一种刺激引起的不适。在四个实验中，受试者同时或依次呈现刺激，对噪声与振动的相对关系进行了判断，并对振动与噪声的相对关系进行了判断。刺激同时或依次呈现对噪声和振动的等效性影响不大，但对噪声与振动的相对关系判断影响较大。在判断噪声时，较高幅度的振动似乎掩盖了低水平噪声引起的不适。在判断振动时，较高水平的噪声似乎掩盖了低幅度振动引起的不适。与振动引起的不适判断相比，噪声对振动引起的不适判断的影响更大。
