Measurements of acoustics properties for level-dependent ear-muffs

• Autorzy: Puto D. , Kotarbińska E.
• Języki publikacji: EN

Abstrakty

EN

The aim of this paper is to present methods of acoustic measurements of level-dependent ear-muffs with an electronic sound restoration system switched off and on, according to EN 352-4. Measurements of sound attenuation and H, M, L criterion levels were carried out for a model of a level-dependent earmuff. The acoustic properties of test sites, sound field requirements and test signals are discussed. Measurements of sound attenuation were carried out in a chamber for testing hearing protectors. The chamber fulfilled the requirements of PN-EN 24869-1. Measurements of the H, M, L criterion levels were carried out in a reverberation room where the sound field of the test site complied with the requirements specified in ISO/DIS 11904-1. Both the chamber for testing hearing protectors and the reverberation room are the part of the laboratory of noise in the Central Institute for Labour Protection in Warsaw, Poland.

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2003
• Tom: Vol. 28, no. 1
• Strony: 3--18
• Opis fizyczny: Bibliogr. 16 poz., rys., tab., wykr.

Twórcy

autor

Puto D.

• Central Institute for Labour Protection, ul. Czerniakowska 16, 00-701 Warsaw, Poland

autor

Kotarbińska E.

• Central Institute for Labour Protection, ul. Czerniakowska 16, 00-701 Warsaw, Poland

Bibliografia

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• [4] E. KOTARBIŃSKA, D. TRYNKOWSKA, Z. PUSŁOWSKI, T. FIDECKI, Metody i projekty stanowisk do badań certyfikacyjnych ochronników słuchu. (Testing methods and designs of the facilities for certification testing of hearing protectors) [in Polish], Warszawa CIOP Report PBZ 0001/S4/92. 1993.
• [5] E. KOTARBIŃSKA and D. PUTO, A measurement facility for acoustic testing of level-dependent ear-muffs, [in Polish], [In:] Proceedings of the Open Seminar on Acoustics OSA’99, R. PANUSZKA (Ed.), (575-580). Zakopane, Poland, Polskie Towarzystwo Akustyczne (Polish Acoustical Society), 1999.
• [6] E. KOTARBIŃSKA, Z. PUSŁOWSKI, D. PUTO, M. SIEK, Acoustic and mechanical properties of level-dependent ear-muffs [in Polish], [In:] Proceedings of the Open Seminar on Acoustics OSA’2000, W. RDZANEK and L. LENIOWSKA (Ed.), 2, 481-486, Rzeszów - Jawor, Poland, Polskie Towarzystwo Akustyczne (Polish Acoustical Society), 2000.
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• [10] EN 352-4:2001 Hearing protectors-Safety requirements and testing - Part 4: Level-dependent ear-muffs. Brussels, European Committee for Standardization, 2001.
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• [12] PN-EN 24869-1:1999 Akustyka - Ochronniki słuchu - Metoda subiektywna pomiaru tłumienia dźwięku (English version: EN 24869-1:1992 Acoustics - Hearing protectors Subjective method for the measurement of sound attenuation), Brussels, European Committee for Standardization, 1999.
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