AkuTimber tackles the low frequency impact sound insulation issue

AkuTimber is the joint name for two research projects carried out at Luleå University of Technology 2019-2021. The projects focus upon low frequency sound insulation, which has been pointed out to suffer from high annoyance among the residents of timber houses. One of the main objectives is to find a single number quantity that in a better way, compared to established quantities of today, describes the relation between impact sound measurement and perception. The goal of the study is to include up to 40 building objects in total, including field measurements from 20 Hz as well as questionnaires, although this interim report will not be able to cover them all. The correlation between the residents reported annoyance from impact sound and various number single number quantities of different frequency range is presented for as many building objects as are ready up to bow