Acoustics and Structures Review

Edit Answers
12345678910111213141516171819202122
Across
  1. 3. If the coefficient of absorption is more than 0.2 the material will ______ noise
  2. 5. What increases as wavelength decreases
  3. 7. Static loads acting downward on a structure
  4. 11. The reaction of a material to stresses stretching or pulling on a material along the direction of its length
  5. 14. A measure for rating the speech privacy performance of a ceiling in an open plan environment
  6. 15. The reduction of the magnitude of a sound
  7. 18. The prolongation of sound as it repeatedly bounces off hard surfaces
  8. 19. Shortening or pushing together of a material resulting in a reduction in size or volume
  9. 21. A number system to rate a ceilings efficiency as a barrier to sound intrusion between two closed rooms
  10. 22. If the coefficient of absorption is less than 0.2 the material will _______ noise.
Down
  1. 1. Doubling materials will only reduce the noise level by how many decibels
  2. 2. Loads that change over time, gradually
  3. 4. A building's vertical extension above ground
  4. 6. The difference in decibels between the sound in source room to sound in receiving room. The loss through a barrier.
  5. 7. Loads applied suddenly to a structure
  6. 8. What does the "A" in "AC" stand for?
  7. 9. The number of decibels that is the threshold of human hearing
  8. 10. What does the "C" in "NRC" stand for?
  9. 12. Reverberation time is the time it takes for sound level to decrease by how many decibels after the source has stopped producing sound
  10. 13. What does the "C" in "STC" stand for?
  11. 16. A single number rating system of how well a material absorbs sound
  12. 17. The perpendicular distance a beam is bent down when a load is placed on it
  13. 20. Number system used to evaluate the transmission loss of the assembly