Labels:clock | dialog box | hakham | poster | web site | window OCR: Air Leakage Sound Problems It is interesting to note that sq. inch opening in wall assembly reduces the STO (Sound Transmission Class) rating from 50 Remember the sound scale IS exponential and increase of 10db perceived by human ear as twice as loud. The bulk of the complaints are in the mid range freguencies (voice stereo etc.) they are also closely related to the air leakage Application of spray applied soft foam cellular insulation IS one of the most practical components in an effective approach sound attenuation. <PREV NEXT 59 interestino frequencies sterec
