The content of acoustic signals and biological effects of noise in conditions of high level of work intensity.

Background: The biological effects of noise depend on its physical parameters, combination with other hazards, the content of acoustic signals. This article aimed to analyze the difference in biological effects caused by the selection of nonverbal and verbal signals in conditions of a high level of work intensity.

Methods: Work conditions, physical characteristics of noise, levels of work intensity were studied among 75 telephone operators and 96 geophone operators.

Peculiarities of hearing impairment depending on interaction with acoustic stimuli.

Aims: The functional state of the auditory analyzer of several operators groups was study. The objective of this study was to determine some characteristics of hearing impairment in relation with features of acoustic stimuli and informative significance of noise.

Materials And Methods: 236 employees (middle age 35.