Management and Organizational Studies 3344A/B Chapter Notes - Chapter 5: Sound Level Meter, Sound Pressure, Noise Reduction

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Physical agents: sources of energy that may cause injury or disease. Ambient: all-encompassing condition associated with a given environment, being usually a composite of inputs from sources all around us. Noise: any unwanted sound, most common workplace hazard. Early warning change: a deterioration of hearing in the upper frequency the earliest detectable sign of noise-induced. Sound and noise differ noise is unwanted sound. Sound is measured using hertz (hz) human can hear 20 to 20,000 hz. Just because we can"t hear the sound doesn"t mean it"s not present (e. g. dog whistle: a noise to one person may only be a sound to another. Threshold of hearing: the envelope or range of sound that the human ear can perceive or hear. Standard measurement of noise is in decibels or db (aka sound pressure level) hearing loss: 3 db = twice as loud, 10 db = ten times louder, 20 db = 100 times louder.

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