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008210112t20062006oncd    ob   f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
0410 |aeng|beng|bfre
0861 |aD68-6/261-2006E-PDF
1001 |aNakashima, Ann, |eauthor.
24510|aImpulse noise : |bmeasurement techniques and hearing protector performance : report on scientific exchange at the French-German Research Institute of Saint-Louis / |cAnn Nakashima, DRDC Toronto ; Karl Buck, Pascal Hamery, Sébastien De Mezzo and Gilbert Brom, French-German Research Institute of Saint-Louis, France.
24610|aReport on scientific exchange at the French-German Research Institute of Saint-Louis
264 1|aToronto : |bDefence Research and Development Canada = Recherche et développement pour la défense Canada, |c2006.
264 4|c©2006
300 |a1 online resource (x, 21 pages, 3 unnumbered pages) : |bgraphs.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aTechnical memorandum ; |vDRDC Toronto TM 2006-231
500 |a"October 2006."
504 |aIncludes bibliographical references (page 13).
5203 |a"Measurements of impulse noise and the performance of several hearing protection devices were done in Saint-Louis and Baldersheim, France at the French-German Research Institute of Saint-Louis (ISL) in August 2006. Hearing protector performance was evaluated using an acoustic test fixture that was designed by ISL. Impulse noises of peak levels from 110 to 190 dB were produced by detonation of explosives. The noise attenuation achieved by a Peltor communications headset (MT15H68 FB 950) and a Peltor Optime III earmuff was measured alone and in combination with a Bilsom nonlinear earplug (Model 655). The Peltor Optime III provided slightly more attenuation than the communications headset up to about 2 kHz. When used in the combination with the earplug, similar attenuation was achieved for the two devices. A prototype AEARO earplug was also tested in the blast noise, and was found to provide good attenuation at low frequencies when used in the nonlinear mode. The performance of the Nacre QuietPro active earplug system was measured in pink noise of 85, 90 and 95 dB. The device provided good attenuation in the passive mode and adequate protection in the push-to-talk (PTT) modes. It is expected that the work performed will lead to future collaborations between DRDC Toronto and ISL in the area of protection from impulse noise and blasts"--Abstract, page i.
546 |aIncludes abstract and executive summary in French.
650 0|aEar|xProtection|xMeasurement.
650 0|aNoise|xMeasurement.
650 6|aOreille|xProtection|xMensurations.
650 6|aBruit|xMesure.
7102 |aDefence R&D Canada. |bToronto Research Centre, |eissuing body.
830#0|aTechnical memorandum (Defence R&D Canada)|vDRDC Toronto TM 2006-231.|w(CaOODSP)9.820564
85640|qPDF|s602 KB|uhttps://publications.gc.ca/collections/collection_2021/rddc-drdc/D68-6-261-2006-eng.pdf