scholarly journals Preliminary Estimate of a Hearing Damage Risk Criterion for Steady State Noise

1952 ◽  
Vol 24 (4) ◽  
pp. 446-446
Author(s):  
Howard C. Hardy
Keyword(s):  
Steady State ◽  
Preliminary Estimate ◽  
Risk Criterion ◽  
Hearing Damage ◽  
Damage Risk

scholarly journals Damage‐Risk Criterion for Steady‐State Noise

1963 ◽  
Vol 35 (5) ◽  
pp. 777-777
Author(s):  
Kalr D. Kryter
Keyword(s):  
Steady State ◽  
Risk Criterion ◽  
Damage Risk

Paper 1: Survey of Auditory Hazards in Power Stations and Their Evaluation in Terms of Hearing Conservation

1966 ◽  
Vol 181 (3) ◽  
pp. 5-18 ◽  
Author(s):  
W. I. Acton ◽  
R. R. A. Coles
Keyword(s):  
Noise Levels ◽  
Hearing Conservation ◽  
Secondary Sources ◽  
Advantages And Disadvantages ◽  
Power Stations ◽  
Pressure Steam ◽  
Different Types ◽  
Risk Criterion ◽  
Hearing Damage ◽  
Damage Risk

Detailed noise surveys of twenty-one modern power stations indicated that the main sources were turbo-alternators and fuel pulverizing plant, with boiler feed pumps, fans of various types, and high-pressure steam valves and pipes as secondary sources. Furthermore, noise levels increased with increasing capacity of plant. The noise levels measured in certain locations in power stations exceeded recent hearing damage risk criteria and it is likely that, unless protected, exposed personnel will eventually suffer hearing damage. The exposed personnel may be divided into two groups: those such as fitters, cleaners, etc., who are only exposed intermittently and the unit control staff who are often exposed continuously for 8-hour periods for five days every week. The principal features of noise-induced hearing loss and of a hearing conservation programme are outlined. The first steps are reduction of noise at source and in transmission; in the situations described, provision of acoustically isolated control rooms is indicated. Where noise levels exceed the damage risk criterion, even for short intermittent exposures, ear protection is required; different types of ear protector, their advantages and disadvantages, and their effects on communications and on the hearing of other important sounds will be reviewed. In addition, a programme of hearing tests (monitoring audiometry) may be desirable.

Applicability of the Leq as a damage‐risk criterion: An animal experiment

1996 ◽  
Vol 99 (3) ◽  
pp. 1621-1632 ◽  
Author(s):  
Robert Lataye ◽  
Pierre Campo
Keyword(s):  
Animal Experiment ◽  
Risk Criterion ◽  
Damage Risk

scholarly journals Comparison of Vocal Vibration-Dose Measures for Potential-Damage Risk Criteria

2015 ◽  
Vol 58 (5) ◽  
pp. 1425-1439 ◽  
Author(s):  
Ingo R. Titze ◽  
Eric J. Hunter
Keyword(s):  
Energy Dissipation ◽  
Dose Calculations ◽  
Equal Energy ◽  
Vocal Fold Vibration ◽  
Risk Criterion ◽  
Time Cycle ◽  
Vocal Intensity ◽  
Potential Damage ◽  
Voice Use ◽  
Damage Risk

Purpose Schoolteachers have become a benchmark population for the study of occupational voice use. A decade of vibration-dose studies on the teacher population allows a comparison to be made between specific dose measures for eventual assessment of damage risk. Method Vibration dosimetry is reformulated with the inclusion of collision stress. Two methods of estimating amplitude of vocal-fold vibration are compared to capture variations in vocal intensity. Energy loss from collision is added to the energy-dissipation dose. An equal-energy-dissipation criterion is defined and used on the teacher corpus as a potential-damage risk criterion. Results Comparison of time-, cycle-, distance-, and energy-dose calculations for 57 teachers reveals a progression in information content in the ability to capture variations in duration, speaking pitch, and vocal intensity. The energy-dissipation dose carries the greatest promise in capturing excessive tissue stress and collision but also the greatest liability, due to uncertainty in parameters. Cycle dose is least correlated with the other doses. Conclusion As a first guide to damage risk in excessive voice use, the equal-energy-dissipation dose criterion can be used to structure trade-off relations between loudness, adduction, and duration of speech.

Sign in / Sign up

Export Citation Format

Share Document