Efficiency of attenuating high-level acoustic impulses with double protection (earplugs and earmuffs used simultaneously)
The study aimed at attenuation obtained with simultaneously used earplugs and earmuffs (double protection) as opposed to hearing protective devices used singly. The measurements were conducted for high 170-dB peak SPL, 14-μs rise time, and 0.4-ms A duration acoustic impulses. Tests were conducted...
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| Format: | Article |
| Language: | English |
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Institute of Fundamental Technological Research Polish Academy of Sciences
2014-01-01
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| Series: | Archives of Acoustics |
| Subjects: | |
| Online Access: | https://acoustics.ippt.pan.pl/index.php/aa/article/view/1362 |
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| author | J. Żera R. Młyński |
| author_facet | J. Żera R. Młyński |
| author_sort | J. Żera |
| collection | DOAJ |
| description | The study aimed at attenuation obtained with simultaneously used earplugs and earmuffs
(double protection) as opposed to hearing protective devices used singly. The measurements
were conducted for high 170-dB peak SPL, 14-μs rise time, and 0.4-ms A duration acoustic
impulses. Tests were conducted for light and heavy earmuffs, combined with foam and
winged earplugs. The transmission loss method was used to assess the decrease in peak SPL
and increase in A, C or D durations of waveforms of impulses recorded under the hearing
protectors. The artificial test fixture (ATF, PN EN 24869-3) was used in the measurements
modified to accommodate for conditions of double protection with a simultaneous use of an
earmuff and an earplug. Results are discussed in relation to impulse noise damage risk criteria
developed by CHABA, Pfander, and Smoorenburg. Double protection provides higher attenuation
of peak SPL and a larger increase in the duration of impulses under hearing protectors,
as compared to single protection of an earplug or an earmuff. |
| format | Article |
| id | doaj-art-64e7c29fd66c452982e4e10f4b5a7c43 |
| institution | Kabale University |
| issn | 0137-5075 2300-262X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Institute of Fundamental Technological Research Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Acoustics |
| spelling | doaj-art-64e7c29fd66c452982e4e10f4b5a7c432025-08-20T03:30:19ZengInstitute of Fundamental Technological Research Polish Academy of SciencesArchives of Acoustics0137-50752300-262X2014-01-01314(S)Efficiency of attenuating high-level acoustic impulses with double protection (earplugs and earmuffs used simultaneously)J. Żera0R. Młyński1Central Institute for Labour Protection – National Research Institute, Czerniakowska 16, 00-701 WarszawaCentral Institute for Labour Protection – National Research Institute, Czerniakowska 16, 00-701 WarszawaThe study aimed at attenuation obtained with simultaneously used earplugs and earmuffs (double protection) as opposed to hearing protective devices used singly. The measurements were conducted for high 170-dB peak SPL, 14-μs rise time, and 0.4-ms A duration acoustic impulses. Tests were conducted for light and heavy earmuffs, combined with foam and winged earplugs. The transmission loss method was used to assess the decrease in peak SPL and increase in A, C or D durations of waveforms of impulses recorded under the hearing protectors. The artificial test fixture (ATF, PN EN 24869-3) was used in the measurements modified to accommodate for conditions of double protection with a simultaneous use of an earmuff and an earplug. Results are discussed in relation to impulse noise damage risk criteria developed by CHABA, Pfander, and Smoorenburg. Double protection provides higher attenuation of peak SPL and a larger increase in the duration of impulses under hearing protectors, as compared to single protection of an earplug or an earmuff.https://acoustics.ippt.pan.pl/index.php/aa/article/view/1362hearing protection devicesdouble protectionimpulse noisetransmission loss. |
| spellingShingle | J. Żera R. Młyński Efficiency of attenuating high-level acoustic impulses with double protection (earplugs and earmuffs used simultaneously) Archives of Acoustics hearing protection devices double protection impulse noise transmission loss. |
| title | Efficiency of attenuating high-level acoustic impulses with double protection (earplugs and earmuffs used simultaneously) |
| title_full | Efficiency of attenuating high-level acoustic impulses with double protection (earplugs and earmuffs used simultaneously) |
| title_fullStr | Efficiency of attenuating high-level acoustic impulses with double protection (earplugs and earmuffs used simultaneously) |
| title_full_unstemmed | Efficiency of attenuating high-level acoustic impulses with double protection (earplugs and earmuffs used simultaneously) |
| title_short | Efficiency of attenuating high-level acoustic impulses with double protection (earplugs and earmuffs used simultaneously) |
| title_sort | efficiency of attenuating high level acoustic impulses with double protection earplugs and earmuffs used simultaneously |
| topic | hearing protection devices double protection impulse noise transmission loss. |
| url | https://acoustics.ippt.pan.pl/index.php/aa/article/view/1362 |
| work_keys_str_mv | AT jzera efficiencyofattenuatinghighlevelacousticimpulseswithdoubleprotectionearplugsandearmuffsusedsimultaneously AT rmłynski efficiencyofattenuatinghighlevelacousticimpulseswithdoubleprotectionearplugsandearmuffsusedsimultaneously |