噪声的管理PPT(English).ppt

HearForever:Best Practices in Hearing Conservation Noise + Acoustics How We Hear Hearing Protection Selection Noise Reduction Rating (NRR) Reducing Costs + Claims for Hearing Loss Hearing Protectors + Fitting Tips Training + Motivation Noise + Acoustics Noise + Acoustics Hazardous noise exposures occur Noise + Acoustics Noise-Induced Hearing Loss Causes no pain Causes no visible trauma Leaves no visible scars Is unnoticeable in its earliest stages Accumulates with each overexposure Takes years to notice a change Noise + Acoustics Noise + Acoustics Worker’s Compensation Noise + Acoustics United States Statistics Noise + Acoustics Noise + Acoustics Noise + Acoustics Noise + Acoustics The decibel (dB) scale is a logarithmic scale, not a linear scale Noise + Acoustics Time Weighted Average Noise + Acoustics Time Weighted Average Noise + Acoustics Time Weighted Average Noise + Acoustics Regulations in the United States Noise + Acoustics Hearing Conservation Program Noise + Acoustics Overprotection/Underprotection Noise + Acoustics Noise Measurement Devices NOISE AND ACOUSTICS ~ Hierarchy of Controls Hierarchy of Controls How We Hear How We Hear The Auditory System How We Hear How We Hear The Human Cochlea How We Hear Safe Noise Levels How We Hear Loud Noise Levels How We Hear High Frequency Sounds of Speech How We Hear Normal Hearing is Understandable How We Hear NIHL Lacks Clarity How We Hear Indicators of NIHL How We Hear Audiometric Testing How We Hear Annual Audiogram vs. Baseline Hearing Protection Selection Hearing Protection Selection Hearing Protection Selection Hearing Protection Selection Hearing Protection Selection Hearing Protection Selection Hearing Protection Selection Hearing Protection Selection Hearing Protection Selection Hearing Protection Selection Hearing Protection Selection Hearing Protection Selection Hearing Protection Selection Hearing Protection Selection Hearing Protection Selection Noise Reduction Rating(NRR) Noise Reduction Rating How