Continuous Noise

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Definition - What does Continuous Noise mean?

Continuous noise, in the context of audiometric testing, is a measurable component in an audiogram showing the cumulative noise exposure rate based on the amplitude (frequency) of successive peak cycles within one-second intervals to determine excessive noise factors. A noise dosimeter or sound level meter are instruments calibrated to mark fluctuating sound pressure distribution, also called a slow response, for every one second of excessive noise affecting hearing sensitivity levels.

SureHire explains Continuous Noise

The combined ramifications of excessive noise and prolonged exposure reflect the average time differential, or A-weighted threshold, marking the sound level ratio in a workplace environment with continuous noise serving as a culprit for hearing loss or impairment. Continuous noise exposure limits follow the time-weighted average (TWA) value at or above 85 decibels (dB) within an 8-hour schedule, accommodating a 3-decibel surplus, or exchange rate, compensating by half the duration of noise exposure. In Canada, reported cases of hearing impairment are loosely static since it does not qualify as a time-loss injury where continuous noise factors translate to gradual hearing loss that is otherwise manageable by control-based solutions inside the workplace.

A thorough evaluation of continuous noise stems from identifying noisy hazards followed by immediate removal/substitution of a less noisy counterpart, implementing administrative or engineering strategies including rotating shifts, and designating remote workspaces to mitigate noise exposure. 

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