On the performance of hearing protectors in impulsive noise

Smeatham, D.; Wheeler, P. D.

doi:10.1016/s0003-682x(96)00026-6

Cited by 9 publications

(5 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Issues related to the characterization of noise produced by hammers, the assessment of the risk posed by noise generated during forging, and hearing protection against this kind of noise have been dealt with over the years (Młyński et al, 2012;Taylor et al, 1984;Sulkowski, Lipowczan, 1982;Starck et al, 2002;Smeatham, Wheeler, 1998). These works show that impulse noise generated by hammers presents a risk of hearing loss.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Impulse Noise Hazard and the Use of Hearing Protection Devices in Workplaces Where Forging Hammers are Used

Młyński¹,

Kozłowski²,

Adamczyk³

2015

Archives of Acoustics

View full text Add to dashboard Cite

The impulse noise is agent harmful to health not only in the case of shots from firearms and the explosions of explosive materials. This kind of noise is also present in many workplaces in the industry. The paper presents the results of noise parameters measurements in workplaces where four different die forging hammers were used. The measured values of the C-weighted peak sound pressure level, the A-weighted maximum sound pressure level and A-weighted noise exposure level normalized to an 8 h working day (daily noise exposure level) exceeded the exposure limit values. For example, the highest measured value of the C-weighted peak sound pressure level was 148.9 dB. In this study possibility of the protection of hearing with the use of earplugs or earmuffs was assessed. The measurement method for the measurements of noise parameters under hearing protection devices using an acoustical test fixture instead of testing with the participation of subjects was used. The results of these measurements allows for assessment which of two tested earplugs and two tested earmuffs sufficiently protect hearing of workers in workplaces where forging hammers are used.

show abstract

Section: Introductionmentioning

confidence: 99%

Assessment of Impulse Noise Hazard and the Use of Hearing Protection Devices in Workplaces Where Forging Hammers are Used

Młyński¹,

Kozłowski²,

Adamczyk³

2015

Archives of Acoustics

View full text Add to dashboard Cite

show abstract

“…It is more complex and represents a short intrinsic reverberation process lasting some few tenths of milliseconds. According to the classifications found in the literature, a clapper impulse can be considered as reverberant impact pulse waveform with B-duration of about 15 ms [117].…”

Section: Wooden Clappermentioning

confidence: 99%

Review of Acoustic Sources Alternatives to a Dodecahedron Speaker

Papadakis

Stavroulakis

2019

Applied Sciences

View full text Add to dashboard Cite

An omnidirectional source is required in many acoustic measurements. Commonly a dodecahedron speaker is used but due to various factors (e.g., high cost, transportation difficulties) other acoustic sources are sometimes preferred. In this review, fifteen acoustic source alternatives to a dodecahedron speaker are presented while emphasis is placed on features such as omnidirectionality, repeatability, adequate sound pressure levels, even frequency response, accuracy in measurement of acoustic parameters and fulfillment of ISO 3382-1 source requirements. Some of the alternative acoustic sources have the appropriate features to provide usable results for acoustic measurements, some have acoustic characteristics better than a dodecahedron speaker (e.g., omnidirectionality in the high-frequency range), while some can potentially fulfill the ISO 3382-1 source requirements. Collected data from this review can be used in many areas (e.g., ISO measurements, head-related transfer functions measurements) for the appropriate selection of an acoustic source according to the expected use. Finally, suggestions for uses and future work are given aimed at achieving further advances in this field.

show abstract

“…The pulse comprises a rapid rise to a peak pressure followed by a relatively slow decay into rarefaction and recovery to steady state ambient pressure again. The peak amplitude, rise time and decay of the sound pressure history are dependent on source parameters such as volume of released gas pressure, geometric characteristics, physical construction and initial acoustic pressure 13 . The semi-reverberant impulse (see Fig.…”

Section: Impulse Noisementioning

confidence: 99%

High-amplitude impulse noise: Measurement of hearing protector attenuation using a shock tube

Birch¹,

Vergara²,

Gerges³

2009

Noise Control Eng. J.

View full text Add to dashboard Cite

The evaluation of hearing protectors for use against high-amplitude impulse noise remains the subject of research with objective testing techniques using acoustic test fixtures offering the only realistic method of providing performance data for protector design and qualification. The work presented in this paper demonstrates the use of an enclosed shock tube arrangement and acoustic test fixtures as a means of evaluating hearing protectors for use against highamplitude impulse noise. © 2009 Institute of Noise Control Engineering.

show abstract

On the performance of hearing protectors in impulsive noise

Cited by 9 publications

References 24 publications

Assessment of Impulse Noise Hazard and the Use of Hearing Protection Devices in Workplaces Where Forging Hammers are Used

Assessment of Impulse Noise Hazard and the Use of Hearing Protection Devices in Workplaces Where Forging Hammers are Used

Review of Acoustic Sources Alternatives to a Dodecahedron Speaker

High-amplitude impulse noise: Measurement of hearing protector attenuation using a shock tube

Contact Info

Product

Resources

About