Isabelle's Puzzle of Awesomeness!!!!!!

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Across
  1. 2. A VERY LOUD TOOL THAT AMPLIFIES YOUR VOICE!!!!
  2. 4. produce vocal sounds or speak
  3. 5. soothing sound that makes your ears happy
  4. 6. study of biology
  5. 8. something that happens in a time period that doesn't belong
  6. 9. a device that measures exact time
  7. 11. study of speech
  8. 12. measuring of time
  9. 14. a system of shorthand writing based on sound
  10. 15. small unit of speech
Down
  1. 1. harsh clashing noise
  2. 3. a graph representation showing heartbeats
  3. 7. a composition for an orchestra to play
  4. 9. list of events arranged in the order in which they happened
  5. 10. happen at the same time
  6. 12. a time recording device
  7. 13. record of happenings
  8. 15. association of letters with speech sounds