From the course: Digital Audio Foundations
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How do we hear?
- How do we hear sound? The process is quite complex and scientific studies are still discovering new information about it. I'll explain how I like to think about hearing by dividing the process into three parts: physical, subconscious, and conscious. When sound in the air reaches our ears, the first part of perceiving that sound is physical. Fluctuations in air pressure, acoustic sound, are reflected and shaped by the pinnae, the parts attached to your head, and directed through the ear canal. The ear drum resonates, or moves back and forth, with the air pressure fluctuations, setting into motion a tiny chain of bones called ossicles. The ossicles mechanically amplify these movements causing fluid motion in a complex spiral-shaped structure called the cochlea. Inside the cochlea are thousands and thousands of tiny hair cells, each of which is tuned to a very narrow frequency range through its size and stiffness. These tiny hairs can feel movement but instead of being processed as a…
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