sound

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Across
  1. 3. How high or low a sound is.
  2. 5. A device that makes sound by turning electrical signals into sound.
  3. 6. A system that increases the strength of sound signals.
  4. 9. The amount of energy in a sound, also known as how loud or soft it is.
  5. 10. Repeated back-and-forth motion that causes sound.
Down
  1. 1. A unit used to measure the loudness of sound.
  2. 2. Something used to reduce or block sound.
  3. 4. To make sound quieter or softer.
  4. 7. A device that turns sound into electrical signals.
  5. 8. A device that makes sounds louder.