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More about Hearing

HOW DOES SOUND OCCUR

Sound is created when the air is subjected to a disturbance both the vibrations from vocal cords and the pounding of a stamping machine create sound waves. The waves are transmitted through the air and captured by the eardrum, from which they move into the cochlea in the inner ear, which contains hair cells with tiny cilia. The cilia move when the sound waves reach them, and that movement is translated into nerve impulses, which are transmitted to the brain. The waves become sound.




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Magnus Johansson, Peltor AB







 THE AUDITORY SYSTEM

  How does sound occur
  The auditory system 
  The outer ear 
  The middle ear
  The inner ear
  Hearing
  Exposure to noise 
  Hearing impairment
  The concept of equal energy
  How to measure noise levels
  Choose right hearing protection
  Do not over attenuate
  Noise regulations