Abstrakt
The hazard assessment of ultrasonic noise impact on human body at
workplaces presents an open problem; it is not satisfactorily solved
comparing the fund of knowledge and standard regulations established for
the case of audible noise. Some research carried on in the Central
Institute of Labour Protection - National Research Institute, Poland, are
essential for elaboration reliable procedures for the assessment of
ultrasonic noise hazard and they have to bring to modernization and
creation the corresponding standards in this field. In the presentation,
some problems related to measurement procedures applied as well as to the
interpretation of results essential for hazard assessment of ultrasonic
noise impact on human body will be considered; in particular such cases
where some procedures elaborated for audible noise assessment are being
transferred to apply in the ultrasonic range without taking fully into
account some specific aspects of the high frequency components of the
noise.
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