What are the two types of noise?

The identification of noise into steady-state/continuous and impulse types is crucial in aeromedical contexts, particularly regarding exposure and its effects on human health and performance. Steady-state or continuous noise represents a constant sound level that persists over time, such as the hum of engine noise during flight. This type of noise can lead to chronic effects such as hearing loss, fatigue, and decreased performance due to prolonged exposure.

Impulse noise, on the other hand, consists of short bursts of sound, which can be significantly louder than continuous noise and typically occurs in short durations, like the noise from a gunshot or an aircraft taking off. Impulse noise can cause immediate harm or injury to hearing due to its high intensity and brief duration.

Understanding these two types of noise is essential, especially in assessing and managing risks in environments such as aviation, where noise exposure can impact pilot performance, safety, and overall crew well-being. This distinction aids in implementing appropriate measures to mitigate noise-related risks in aeromedical practice.