IRSST - Institut de recherche Robert-Sauvé en santé et en sécurité du travail

Study of sound transmission through hearing protectors and application of a method for evaluating their efficiency in the workplace (part 1)

The method for evaluating the noise attenuation characteristics of hearing protectors is based on laboratory tests. However, many studies have shown that the actual effectiveness of this protective equipment is, more often than not, much lower than the results thus obtained. The authors examined the time evolution of the performance of this equipment during one work shift, with 24 workers, in different sound environments. This mainly enabled them to develop a method for measuring the real effectiveness of earmuffs and moulded ear plugs, and then to compare it to measurements taken in the laboratory.

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Additional Information

Category: Conference
On screen: Produced by:
  • Philippe Lemay - Filming and Editing
Research Project: 0099-4940
Publication no.: CF-020
Language: French
Online since: June 08, 2011
Recorded date: November 09, 2010
Format: Video
Duration: 13:28