Introduction to Sound

After reading this section you will be able to do the following:

  • Discuss why sound plays an important role in your life.

Everyday your world is filled with a multitude of sounds. Sound can let you communicate with others or let others communicate with you. It can be a warning of danger or simply an enjoyable experience. Some sounds can be heard by dogs or other animals but cannot be heard by humans.

You will learn more about sound in the following pages.


  1. Sound is important in our everyday life, but also has applications in NDT.