Everyone tenses up in anticipation as they hear the countdown, “three, two, one.” Then there’s an extremely loud BOOM and blinding light. Sparks fly everywhere, and smoke fills the test area. Laughter and perhaps even a high five frequently follow.
On a daily basis, we hear sounds and noise in our environment from a variety of sources, such as television, radio, household appliances and traffic. However, these everyday sounds are usually at a safe volume.