Strutt|Criteria|Ratings|Sound Insulation|Ln,w+Ci inserts the weighted normalised impact sound pressure level with spectrum correction (Ln,w+Ci) calculated from the active row of the worksheet into Column D of the active row. The spectral correction includes frequencies 100 Hz - 2,500 Hz (for third octave calculations) as per the standard.
Strutt|Criteria|Ratings|Sound Insulation|Ln,w50 inserts the weighted normalised impact sound pressure level with spectrum correction (Ln,w+Ci,50-2500) calculated from the active row of the worksheet into Column D of the active row. The spectral correction includes frequencies 50 Hz - 2,500 Hz (for third octave calculations) and 63 Hz - 2 kHz (for octve band calculations) as per the standard.
Reference: ISO717.2 (2004)