Abstract
To assess high-level low frequency noise in the working environment,
adverse extra-aural effects caused by the noise should be taken into
account. The human body vibration induced by low frequency noise,
'noise-induced vibration', was measured on the body surface and the
equal-acceleration level contours of the vibration were tentatively
estimated. With these contours, we can predict the magnitude of noise-induced
vibration at every measuring position on the body surface. This is
helpful in relating the total dosage of low frequency noise with
the physical symptoms caused by the noise. But some important points
in the contours remain to be investigated and improved. When these
points are dealt with, the equal-acceleration level contours will
be useful for assessing high-level low frequency noise in the working
environment from the standpoint of predicting the adverse extra-aural
effects.
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