Acoustic 2

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Across
  1. 3. intruding sound with a masking device
  2. 4. single number rating system of how well a material absorbs sound
  3. 8. amount of absorption of a porous type sound absorber depends on material thickness, porosity and this
  4. 11. prolongation of sound as it repeatedly bounces off hard surfaces
  5. 15. doing this to absorption reduces reverberation time by half
  6. 16. metal and wood ceilings should have these for better absorption
  7. 18. 0.2 equals sound reflective absorption
Down
  1. 1. number equalling complete sound absorption
  2. 2. reduces the intensity level of sound within a space, controls unwanted sound
  3. 5. to 35 in the decibel range of noise criteria in private offices
  4. 6. this system raises background noise levels to mask sound
  5. 7. absorption coefficient of a room should be 0.20
  6. 9. one way of affecting the acoustic quality of a space
  7. 10. most important reflecting surface in an open plan office
  8. 12. noise reduction coefficient
  9. 13. 0.2 equals sound absorbing fundamentals
  10. 14. NRC or noise reduction blank
  11. 17. sound transmission class