The Voice Evacuation Systems solution covers the design, sizing and integration of systems intended to broadcast automatic and manual audio messages for the safe guidance of occupants during emergency situations.

The system is structured to ensure message intelligibility, proper acoustic coverage and integration with the Fire Detection and Alarm System (FDAS) and other building security subsystems, enabling coordinated evacuation and a structured response to critical events.

A3A Engenharia de Sistemas develops each solution based on occupancy analysis, architectural characteristics, speech intelligibility criteria and applicable regulatory requirements, ensuring predictable acoustic performance and technical compliance.

Scope of Work

Planning and Engineering

  • Technical survey of the building and risk classification
  • Sound propagation and speech intelligibility studies
  • Sizing of amplifiers and controllers
  • Definition of audio zones and emergency sectorization
  • Specification of loudspeakers and field devices
  • Planning of redundancy and system supervision
  • Coordination with electrical and FDAS designs

Deployment and Integration

  • Installation of controllers, amplifiers and audio devices
  • Configuration of prerecorded messages and manual triggers
  • Integration with the Fire Detection and Alarm System
  • Interconnection with the building public-address infrastructure
  • Adjustment of priorities and emergency scenarios
  • Functional tests for automatic and assisted activation

Testing and Commissioning

  • Speech intelligibility tests
  • Validation of audio zones and evacuation routes
  • Verification of emergency operating modes
  • Integrated tests with related security systems
  • Commissioning records and technical acceptance documentation

Adaptation and Modernization

  • Upgrade of obsolete sound systems
  • Expansion of coverage areas and evacuation zones
  • Adaptation to new occupancy scenarios
  • Integration with modernization of the fire and life-safety infrastructure

Applications and Environments

The solution is applicable to:

  • Corporate buildings
  • Shopping centers
  • Hospitals and healthcare facilities
  • Industrial plants
  • Educational campuses
  • Airports, terminals and public-use facilities

The system is designed to support emergency communication routines with operational reliability, intelligibility and integration with the overall building safety strategy.

Standards and Compliance

The solution is structured according to speech intelligibility criteria, life-safety engineering practices and the technical guidelines applicable to emergency communication systems, always integrated with the building fire and alarm infrastructure.