Which of the following is an example of impulse noise?

Impulse noise is characterized by short-duration, high-intensity sounds that occur suddenly and can cause immediate hearing damage or discomfort. A gunshot is a prime example of impulse noise since it produces a very loud blast that lasts only a fraction of a second. This type of sound can reach decibel levels significantly higher than typical sounds, which is why it is particularly dangerous to hearing health.

In comparison, while a train whistle may also be loud, it is generally sustained rather than a quick burst, categorizing it more as continuous noise rather than impulse noise. Traffic noise is typically consistent and can vary in intensity but does not have the instantaneous high-pressure characteristics that define impulse noise. Soft conversation, on the other hand, is low in intensity and prolonged, making it the farthest removed from the characteristics of impulse noise. Understanding the differences between these types of sounds can help in assessing noise exposure risks in occupational settings.