Sound:  Air particles that bump into each other creating due to movement. This movement creates sound waves, some of which you hear.

Noise: A sound that is loud or unpleasant, that causes disturbance.

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Humans hear when we receive sound waves into our inner ear. They are perceived by the brain through our hair cells. See the beautiful inner ear below on the Left. When a sound is too loud, these hair cells become damaged(1). (below)

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Sound Is information. We use sound to express feelings with words, song, and music. When a sound communicates danger, our bodies' response is to be alert. It produces a fight or flight response which increases our heart rate and floods the body with adrenaline(2). Today, most people do not need to run away from a predator, but their bodies still prepare for it physiologically when there are loud noises and over time it causes health problems. This hyper state of alert creates chronic stress which affects the heart, lungs, adrenal glands, affects sleep and increases hearing loss(3). These metabolic responses are detrimental to well-being and compound over time.  In today's cities, there is a constant noise from 65-90 Decibels, way above 55 Decibel limit for hearing loss over time(4). These noises are mostly from traffic, motorcycles , transportation, industry, and construction. 

 

 

 

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