Figure 3.

(a) Percentages of acoustic treatments self-estimated by the subjects for the shared and open-plan offices: (a) Subjective ratings on the presence (C1) of acoustic treatments; (b) Subjective ratings on the acoustic treatment types. The following abbreviations were adopted: SW for “screens between workstation”, SAMC for “sound absorption materials on ceiling”, SAMW for “sound absorption materials on walls”, SAMCW for “sound absorption materials on ceiling and walls”, C for “carpets”, SAMCSW for “sound absorption materials on ceiling with screens between workstations” and O for “other”.