An impact or impulse sound is:

An impact or impulse sound is characterized by being intense and short in duration. This type of sound typically occurs suddenly and often has a high intensity due to the rapid increase in sound pressure levels. Examples include a loud clap, a gunshot, or a hammer striking a nail.

In this context, the qualities of intensity and brevity are critical in understanding how impulse sounds can affect hearing and why they are of particular concern in hearing conservation programs. They differ from other sound types, such as steady sounds, which have a constant sound pressure level over time, or sounds that are soft and gradual, which build up gradually and do not have the sudden pressure spikes characteristic of impulse sounds.

Recognizing the nature of impact or impulse sounds is essential for properly evaluating potential sound exposure risks and implementing protective measures in environments where such sounds are prevalent.