10.52 outdoor-indoor transmission class. A single-number rating of the sound-blocking ability of a partition, door, window, etc., calculated in accordance with ASTM E1332 from measurements of one-third octave band sound pressure levels and sound absorption...
10.51 normalized noise isolation class. Single-number rating of the 16 normalized level differences, obtained by use of the reference rating curve defined for sound transmission class. Unit, decibel (dB); abbreviation,...
10.50 noise isolation class. Single-number rating of the 16 level differences between two rooms obtained according to ASTM E336 and rated by use of the ASTM E413 reference rating curve defined for sound transmission class. Unit, decibel (dB); abbreviation,...
10.49 sound reduction index. Single-number rating of airborne sound insulation of a building partition, derived by fitting a reference rating curve to the sound transmission loss values measured for the 16 contiguous one-third octave frequency bands with...
10.48 sound transmission class. Single-number rating of airborne sound insulation of a building partition, derived by fitting a reference rating curve to the sound transmission loss values measured in accordance with ASTM E90 for the 16 contiguous one-third...
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