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Table 5 Overview of room acoustic measurements

From: Use of moulded hearing protectors by child care workers - an interventional pilot study

Institutions Participants Mean reverberation time in seconds (T0):
(actual) (target)
Room acoustic improvements recommended by the room acoustics expert
T0
(N)
T2
(N)
Child day care centres C1 2 2 0.48 (0.50) No
C2 3 1 0.46 (0.40), 0.47 (0.40), 0.73 (0.50) Yes
C3 3 3 0.60 (0.50), 0.45 (0.40), 0.60 (0.40) No
C4 1 0 0.48 (0.50), 0.60 (0.45), 0.50 (0.40) No
C5 3 2 0.38 (0.45) No
C6 3 2 0.48 (0.40), 0.56 (0.50) Yes
C7 3 3 0.35 (0.40), 0.44 (0.50) Yes
C8 5 4 0.64 (0.55), 0.49 (0.40), 0.37 (0.40), 0.58 (0.50) Yes
C9 7 5 0.70 (0.55), 0.54 (0.50), 0.61 (0.50) Yes
C10 2 1 0.53 (0.40), 0.45 (0.40), 0.89 (0.50) Yes
C11 4 4 0.42 (0.50) No
School partnerships S1 1 1 0.57 (0.55), 0.66 (0.55) No
S2 3 2 0.47 (0.50), 0.60 (0.50), 0.69 (0.50), 0.73 (0.80) Yes
S3 2 0 0.85 (0.65), 0.88 (0.65), 0.50 (0.50) Yes
S4 2 2 0.64 (0.60), 0.82 (0.60), 0.57 (0.50), 0.97 (0.70) Yes
S5 1 1 No measurements No information
  1. Bold: actual, not bold: target