Finding Pitch

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Across
  1. 3. hear
  2. 4. vibrate
  3. 5. plate
  4. 7. song
  5. 9. second
  6. 10. speaker
Down
  1. 1. pitch
  2. 2. wavelength
  3. 6. microphone
  4. 7. sound
  5. 8. wave
  6. 9. sing