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A Sound Education

Author(s): Gregory L. Vogt, EdD

Are All Sounds Audible?

Sound is an oscillation of pressure transmitted by mechanical waves through solids, liquids, gases and plasma. We think of sound as composed of frequencies within the range of hearing. But additional sounds are out of our audible range. 

Vibrations too low for us to hear are known as infrasounds. 

Ultrasounds are those sounds that are too high for us to hear.

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