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Document ID (ISN)56037
CIS number 91-989
ISSN - Serial title Cahiers de notes documentaires - Sécurité et hygiène du travail
Year 1990
Convention or series no.
Author(s) Damongeot A., Kusy A.
Title Relevance of "grab" sampling methods for assessing the noise levels in factories
Original title Pertinence de l'échantillonnage "en aveugle" pour l'estimation des niveaux sonores en entreprises [in French]
Bibliographic information 2nd Quarter 1990, No.139, Note No.1778-139-90, p.347-361. Illus. 14 ref.
Abstract Several grab sampling techniques, proposed for assessing the A-weighted daily equivalent sound pressure level (Leq), have been tested at 28 workstations with fluctuating noise levels. The actual Leq, obtained over an 8h period, was compared with estimates obtained from a number of sampling parameters. From the difference between actual and estimated values of Leq, it appears that grab sampling generally tends to underestimate Leq (sometimes considerably) and that the predicted confidence intervals are not generally taken into consideration. In cases where grab sampling does give statistically reliable results, accuracy is better served by increasing the number of samples than their duration.
Descriptors (primary) noise; noise measurement; exposure evaluation; equivalent continuous noise
Descriptors (secondary) comparative study; description of technique
Document type D - Periodical articles
Country / State or ProvinceFrance
Subject(s) Noise, hearing and vibration
Broad subject area(s) Physical hazards
Browse category(ies) Noise
Exposure evaluation