Shoenberger R W
Aviat Space Environ Med. 1976 Aug;47(8):856-62.
An intensity matching technique was used in two experiments to test the independent component method for evaluating complex vibration environments, recommended by current vibration standards; In the first experiment, seated subjects adjusted the intensity of a 25 Hz sinusoid to match the subjective intensity of 11, 17, 40, and 63 Hz simusoids, presented either singly or in combinations of two, three, or four frequencies. In the second experiment, 25 Hz was again used to match the subjective intensity of third octave bands of random vibration with center frequencies of 16, 20, 25, 31;5, and 40 Hz, presented either singly or in combinations of two, three, or four bands. The results showed that the acceleration of the matching response increased significantly as the number of sinusoids or third-octave bands in the stimulus increased; These findings indicate that the independent component evaluation method will underestimate the severity of complex vibration environments, and suggest that their perceived intensities may be more accurately reflected by the weighting technique included in the standards as an alternative evaluation method.
在两项实验中使用了强度匹配技术，以测试当前振动标准推荐的用于评估复杂振动环境的独立分量法；在第一个实验中，坐着的受试者调整25赫兹正弦波的强度，以匹配单独呈现或以两个、三个或四个频率组合呈现的11、17、40和63赫兹正弦波的主观强度。在第二个实验中，再次使用25赫兹来匹配中心频率为16、20、25、31.5和40赫兹的随机振动的倍频程带的主观强度，这些倍频程带单独呈现或以两个、三个或四个频带组合呈现。结果表明，随着刺激中正弦波或倍频程带数量的增加，匹配响应的加速度显著增加；这些发现表明，独立分量评估方法会低估复杂振动环境的严重性，并表明标准中包含的加权技术作为一种替代评估方法可能会更准确地反映其感知强度。
