3min chapter

Twenty Thousand Hertz cover image

Relearning Boléro

Twenty Thousand Hertz

CHAPTER

What Is Sound?

Sound is rapid changes in air pressure that happen when something is vibrating. Pressure waves become electrical impulses, which are eventually interpreted as sounds. Your ear can do this whole process thousands of times per second. If we actually perceived every different sound that came in, we would be utterly confused. Our brain essentially edits our auditory experience.

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