Why is an empty room full of echoes?

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Tags

  1. #furnishings
  2. #convert
  3. #absorb
  4. #nothing
  5. #energy
  6. #empty
  7. #while
  8. #control
  9. #waves
  10. #sound
  11. #level
  12. #better
  13. #echoes
  14. #filled
  15. #stands
  16. #unable
  17. #space
  18. #reflected