What does the term 'impulse noise' refer to in audiology?

Impulse noise in audiology refers to short bursts of loud sounds that occur unexpectedly and are usually of very brief duration. This type of noise can come from sources such as gunshots, explosions, or machinery. The key characteristic of impulse noise is its sudden peak in sound pressure level, which can lead to immediate auditory damage or disturbances, particularly if experienced repeatedly or at high intensities.

Understanding impulse noise is important in audiology because exposure to such sounds can contribute to hearing loss, particularly in industrial settings or environments where heavy machinery is used. The focus on the brief, intense bursts sets impulse noise apart from other forms of noise such as continuous low-level sounds or constant environmental noise, which are more predictable and less likely to cause immediate hearing damage.