VS-P03
RETROFIT
PORTO, PT
SAMPLE ENTRY
Rail Concourse
A stone-clad station hall where every announcement arrived three times. We tuned the room and the loudspeakers together until it arrived once.
- CLIENT
- Rail operator
- TYPE
- Retrofit
- FOCUS
- Speech intelligibility, PA
- SIZE
- 2,400 m²
- STATUS
- Complete, 2025
- LOCATION
- 41.15°N 8.61°W
FIG.MEASUREDSTI 0.41 → 0.57 (CONCOURSE AVG)
P03NOTES
01
Brief
Passengers couldn’t make out platform changes, and the voice alarm system had failed its intelligibility test. New loudspeakers on their own had already been tried.
02
Approach
We modelled the hall and the sound system together and tried different loudspeaker positions and angles in the model. Absorption went into the roof coffers, out of sight from the floor. The existing line arrays were rehung lower and aimed away from the stone.
03
Outcome
Announcements are now clear along the full length of the concourse, and the voice alarm system passes comfortably above the 0.50 STI it needs.