Sound reflecting ceilings vs. sound absorbing ceilings; acoustic measurements in three areas of the ward (reverberation time, sound pressure level, and speech intelligibility)
| Area | Reverberation time (s) | Equivalent sound pressure level (LAeq) | Speech intelligibility (RASTI value) | |||
|---|---|---|---|---|---|---|
| Sound reflecting | Sound absorbing | Sound reflecting | Sound absorbing | Sound reflecting | Sound absorbing | |
| –, not measured. | ||||||
| *Measurements performed in two different positions. | ||||||
| Central area | 0.8 | 0.4 | 57 | 56 | 0.72/0.68* | 0.88/0.83* |
| Patient room 4 | 0.9 | 0.4 | 56 | 50 | 0.67 | 0.87 |
| Patient room 7 | – | – | 56 | 51 | – | – |