title: [Problem of evaluation of impulse noise by the impulse-background criterion].
abstract: The article narrates on the study of the impulse-background index evaluated as the difference between the levels measured with a phonemeter at the 'impulse' ('I') and 'slow' ('S') temporal characteristics and within the noise impulses' amplitude-temporal parameters. It was established that delta L was the function of both the amplitude and the impulse duration. If the impulse duration was commensurable with the constant 'S',--delta L was regularly less than 7 dBa irrespective of the actual 'impulse-background' correlation. Expositions of the noises with equal delta L and different amplitude-temporal characteristics were performed with a group of volunteers and resulted in different biologic effects. It was suggested that the delta L evaluation technique proposed by the existing hygienic standards was inadequate and needed reconsideration.
authors.forename: A G
authors.initials: AG
authors.lastname: Arakelian
mesh_terms: D000161:Acoustic Stimulation; D001301:Audiometry, Pure-Tone; D001309:Auditory Threshold / Q000502:physiology*; D006309:Hearing / Q000502:physiology*; D006801:Humans; D008954:Models, Biological; D009622:Noise; D013016:Sound; D013997:Time Factors
vernacular_title: K voprosu ob otsenke impul'snogo shuma po kriteriiu impul's-fon.