Active standard | Published: 19/09/2012

IEC 61094-8-ed.1.0

Measurement microphones - Part 8: Methods for determining the free-field sensitivity of working standard microphones by comparison
(Microphones de mesure - Partie 8: Methodes pour la determination de l´efficacite en champ libre par comparaison des microphones etalons de travail)

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Detail information

Designation: IEC 61094-8-ed.1.0

Publication date: 19/09/2012

Pages: 61

Country: International technical standard

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Anotation

IEC 61094-8:2012 applicable to working standard microphones meeting the requirements of IEC 61094-4. It describes methods of determining the free-field sensitivity by comparison with a laboratory standard microphone or working standard microphone (where applicable) that has been calibrated according to either; IEC 61094-3; IEC 61094-2; IEC 61094-5; IEC 61094-6; or this part of IEC 61094. Methods performed in an acoustical environment that is a good approximation to an ideal free-field (e.g. a high quality free-field chamber), and methods that use post processing of results to minimise the effect of imperfections in the acoustical environment, to simulate free-field conditions, are both covered by this part of IEC 61094. Comparison methods based on the principles described in IEC 61094-3 are also possible but beyond the scope of this part of IEC 61094. La CEI 61094-8:2012 est applicable aux microphones etalons de travail satisfaisant aux exigences de la CEI 61094-4. Elle decrit des methodes pour la determination de lefficacite en champ libre par comparaison utilisant un microphone etalon de laboratoire ou un microphone etalon de travail (sil y a lieu) qui a ete etalonne dapres les indications dun des documents suivants: CEI 61094-3; CEI 61094-2; CEI 61094-5; CEI 61094-6; ou a presente partie de la CEI 61094. Les methodes employees dans un environnement acoustique constituant une bonne approximation dun champ libre ideal (par exemple une chambre en champ libre de haute qualite) et les methodes utilisant un post-traitement des resultats pour reduire au maximum leffet des imperfections de lenvironnement acoustique, afin de simuler les conditions dun champ libre, sont toutes abordees dans la presente partie de la CEI 61094. Des methodes de comparaison reposant sur les principes decrits dans la 61094-3 peuvent egalement etre utilisees, mais elles sortent du domaine dapplication de la presente partie de la CEI 61094.

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