PA and voice alarm
Public address and voice alarm, engineered for intelligibility.
An emergency message is only as good as its intelligibility at the worst listening position in the worst zone. We design PA and voice alarm systems around the building's acoustics, its zoning and the evacuation strategy they serve.
Where it fits
- Hospitals and healthcare estates
- Transport interchanges and large public buildings
- Shopping centres and leisure venues
- Warehouses and industrial facilities
- Education campuses
PA and voice alarm
Our scope
What we do on these systems.
- 01Survey the acoustic environment (reverberation, ambient noise, room geometry) rather than deriving loudspeaker counts from floor area
- 02Design zoning aligned to the building's fire and evacuation strategy, agreed before equipment is selected
- 03Model loudspeaker types, positions and tapping levels for predicted intelligibility, not just sound level
- 04Design the interface to the fire detection system, including the cause-and-effect logic for each zone
- 05Commission with measured speech intelligibility testing across zones, recorded against the design targets
- 06Document zoning, cause-and-effect, message content and the maintenance regime for the life of the system
Platform
What the system does.
- Zoned announcements that reach the areas that need them and nowhere else
- Speech intelligibility confirmed by measurement rather than assumed from loudspeaker count
- Automatic voice evacuation messages triggered by the fire detection system through defined cause-and-effect
- Phased evacuation supported by zone-by-zone message control
- Monitored amplifiers, loudspeaker circuits and cabling, with fault reporting
- Standby power so the system remains available through mains failure
- Ambient noise sensing that adjusts announcement level to conditions
- Routine paging and background audio on the same engineered system, with emergency traffic always taking priority
Next step
Bring the complete environment into one conversation.
Tell us what you are planning, replacing, integrating or trying to stabilise. We will help define the right next step.