The Immediate and Long-Term Impact of Military Aircraft Noise on Hearing: A Cross-Sectional Comparison of Fighter Pilots and Ground Staff

Kuo, Chao‐Yin; Hung, Chia-Lien; Chen, Hsin-Chien; Shih, Cheng‐Ping; Lu, Rou-Huei; Chen, Chen-Wai; Hung, Li-Wen; Lin, Yi‐Chun; Chen, Hang-Kang; Chu, Da-Ming; Lin, Yuan‐Yung; Chen, Yueh-Chun; Wang, Chih‐Hung

doi:10.3390/ijerph18062982

Cited by 8 publications

(3 citation statements)

References 31 publications

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“…Acoustic comfort in aircrafts is a major concern in the aerospace industry [69]. Studies and research in the field [70][71][72][73][74][75] aim to develop technologies and solutions for passive noise control, including through the improvement of absorbent materials, design, and other interior components. Additionally, advanced methods of analysis and numerical simulation are used to assess the impact of different configurations and materials on cabin noise levels and to optimize the aircraft's interior design to enhance acoustic comfort.…”

Section: Background and Conceptual Frameworkmentioning

confidence: 99%

Quantitative analysis of predictors of acoustic materials for noise reduction as sustainable strategies for materials in the automotive industry

Gabor,

Blaga,

Caseriu

2024

Preprint

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This study proposes a qualitative analysis to identify the best predictors for ensuring passive noise control, aiming to achieve superior acoustic comfort in transportation systems. The study is based on real experimental data on materials from six different classes and employs a multidisciplinary approach, including Mann‒Whitney U tests, Kruskal‒Wallis analysis with Dunn's post hoc multiple comparisons, and multilinear regression. This research presents an analysis and evaluation of how the physical properties of various materials influence acoustic comfort, acoustic absorption class, and absorption class performance and proposes quantitative models for material selection to address sustainable strategies in the automotive industry. The results highlight significant differences between material categories in terms of acoustic absorption properties and demonstrate the importance of rigorous material selection in vehicle design to enhance acoustic comfort. Additionally, the research contributes to the development of predictive models that estimate acoustic performance based on the physical properties of materials, providing a basis for optimizing material selection in the design phase.

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Section: Background and Conceptual Frameworkmentioning

confidence: 99%

Quantitative analysis of predictors of acoustic materials for noise reduction as sustainable strategies for materials in the automotive industry

Gabor,

Blaga,

Caseriu

2024

Preprint

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“…However, exposure to excessive military noise is dangerous and may result in acute acoustic trauma, permanent hearing loss, tinnitus, hyperacusis, recruitment, distortion, or abnormal pitch perception [1,[6][7][8][9][10][11]. As isolating oneself from noise or extending the distance between oneself and a noise source is often unfeasible in military scenarios, noise is usually attenuated by using a hearing protection device (HPD) such as an earplug or earmuff, or through the use of double HPDs (earplug and earmuff).…”

Section: Introductionmentioning

confidence: 99%

Perforated Concave Earplug (pCEP): A Proof-of-Concept Earplug to Improve Sound Localization without Compromising Noise Attenuation

Fink,

Levitas,

Eisenkraft

et al. 2023

Sensors

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Combat soldiers are currently faced with using a hearing-protection device (HPD) at the cost of adequately detecting critical signals impacting mission success. The current study tested the performance of the Perforated-Concave-Earplug (pCEP), a proof-of-concept passive HPD consisting of a concave bowl-like rigid structure attached to a commercial roll-down earplug, designed to improve sound localization with minimal compromising of noise attenuation. Primarily intended for combat/military training settings, our aim was an evaluation of localization of relevant sound sources (single/multiple gunfire, continuous noise, spoken word) compared to 3M™-Combat-Arms™4.1 earplugs in open-mode and 3M™-E-A-R™-Classic™ earplugs. Ninety normal-hearing participants, aged 20–35 years, were asked to localize stimuli delivered from monitors evenly distributed around them in no-HPD and with-HPD conditions. The results showed (1) localization abilities worsened using HPDs; (2) the spoken word was localized less accurately than other stimuli; (3) mean root mean square errors (RMSEs) were largest for stimuli emanating from rear monitors; and (4) localization abilities corresponded to HPD attenuation levels (largest attenuation and mean RMSE: 3M™-E-A-R™-Classic™; smallest attenuation and mean RMSE: 3M™-Combat-Arms™4.1; pCEP was mid-range on both). These findings suggest that the pCEP may benefit in military settings by providing improved sound localization relative to 3M™ E-A-R™-Classic™ and higher attenuation relative to 3M™-Combat Arms™-4.1, recommending its use in noisy environments.

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“…Especially, military pilots are subjected to a potentially hazardous level of noise compared to commercial jet pilots, which could be a significant risk factor for irreversible hearing damage 10,11 . However, different aircraft types have different noise levels and frequencies.…”

mentioning

confidence: 99%

Prevalence and associated factors of noise-induced hearing loss among workers in Bishoftu Central Air Base of Ethiopia

Hailu,

Zeleke,

Ermias

et al. 2024

Sci Rep

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Excessive occupational exposure to noise results in a well-recognized occupational hearing loss which is prevalent in many workplaces and now it is taken as a global problem. Therefore, this study aims to assess the prevalence of noise-induced hearing loss and associated factors among workers in the Bishoftu Central Air Base in Ethiopia. An institutional-based cross-sectional study was conducted among 260 central air base workers through face-to-face interviews, an environment noise survey, and an audiometric test for data collection. Data were entered by Epi-data version 3.1 and SPSS was used to analyze the data. Finally, a statistical analysis such as descriptive and binary logistic regression analysis was applied. A P-value < 0.05 at 95% CI was considered statistically significant. The overall prevalence of noise-induced hearing loss and hearing impairments was 24.6 and 30.9%, respectively. The highest prevalence of noise-induced hearing loss was recorded for workers who were exposed to noise levels greater than 90 dBA. Out of 132 workers exposed to the average noise level of 75 dB A, only 5% of workers were affected with noise-induced hearing loss, while 128 workers exposed to an average noise level equal to or greater than 90 dB A, 19.6% of workers were identified with noise-induced hearing loss. Regarding sex, around 21.9% of male workers were identified with noise-induced hearing loss. Workers who were exposed to a high noise level workplace previously or before the Central Air Base workplace were five times (AOR = 5.0, 95% CI 1.74–14.36) more likely affected by noise-induced hearing loss than those workers not previously exposed. Those workers who were exposed to greater or equal to 90dBA noise level were 4.98 times (AOR = 4.98, 95% CI 2.59–9.58) more likely to be exposed to noise-induced levels than those who were exposed to less than 90dBA noise level. Moreover, male air base workers were 3.5 times more likely exposed to hearing impairment than female workers (AOR = 3.5, 95% CI 1.01–12.0). This study identified that the prevalence of noise-induced hearing loss and hearing impairments was significantly high. So implementation of a hearing conservation program, giving noise education, and supplying adequate hearing protective devices (HPDs) are essentials.

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The Immediate and Long-Term Impact of Military Aircraft Noise on Hearing: A Cross-Sectional Comparison of Fighter Pilots and Ground Staff

Cited by 8 publications

References 31 publications

Quantitative analysis of predictors of acoustic materials for noise reduction as sustainable strategies for materials in the automotive industry

Quantitative analysis of predictors of acoustic materials for noise reduction as sustainable strategies for materials in the automotive industry

Perforated Concave Earplug (pCEP): A Proof-of-Concept Earplug to Improve Sound Localization without Compromising Noise Attenuation

Prevalence and associated factors of noise-induced hearing loss among workers in Bishoftu Central Air Base of Ethiopia

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