What are hertz frequencies?

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  1. #sound
  2. #number
  3. #refers
  4. #hertz
  5. #equals
  6. #called
  7. #standard
  8. #human
  9. #vibration
  10. #measure
  11. #kilohertz
  12. #vibrations
  13. #cycles
  14. #frequency
  15. #voice
  16. #second
  17. #averages