What type of noise starts and stops repeatedly?

Intermittent noise is characterized by its pattern of sporadic bursts, which start and stop at irregular intervals. This form of noise presents distinct, recognizable sounds that can be temporally spaced, creating periods of silence interspersed with sound. In practical environments, examples of intermittent noise might include machinery that operates in cycles or sounds from activities like construction where the noise is not constant.

In contrast, continuous noise is constant without breaks, and impact noise usually refers to sudden loud sounds resulting from collisions or impacts rather than a repeated pattern of sound. Consistent noise may imply a stable level of sound, but it doesn't accurately describe the repetitive start-and-stop nature defined by intermittent noise. Thus, the description of noise that repeatedly starts and stops aligns perfectly with intermittent noise.