What is impulse or impact noise?

Impulse or impact noise refers to short, intense sounds that occur suddenly and are typically of high energy. This type of noise is characterized by a quick onset and a rapid decrease in intensity, which is precisely what defines it as impulse or impact noise. Examples include sounds generated by tools such as nail guns, hammering, or even loud claps.

In contrast to sustained sounds or continuous noise, which are characterized by their prolonged presence and steady intensity, impulse noise is marked by its brief and explosive nature. Understanding this distinction is crucial in fields like audiology and noise control, as impulse noises can potentially lead to hearing damage due to their high decibel levels and sudden onset.

The other options describe different types of noise. Prolonged, sustained sounds pertain to consistent noise exposure that can have different impacts on hearing versus short bursts of sound. Continuous noise refers to unchanging sound levels generated by machinery, while variable frequency noise is characterized by fluctuations in sound pitch and intensity from devices rather than the sharp bursts typical of impulse sounds.