e/Impact insulation class

Information
has gloss	eng: Impact Insulation Class (or IIC) is an integer-number rating of how well a building floor attenuates impact sounds, such as footsteps. A larger number means more attenuation. The scale, like the decibel scale for sound, is logarithmic. The IIC is derived from ASTM method E989, which in turn uses a tapping machine specifed in ASTM method E492.
lexicalization	eng: Impact insulation class
instance of	c/Sound measurements