Sound solutions for alarming and transmitting pre-recorded messages
Secunet Project proposes sound solutions for alarming and transmitting pre-recorded messages, providing clear information on how to evacuate in case of emergencies.
Statistics have shown that in an emergency only 13% of people react in a timely manner to a bell or tone, while 75% of people react quickly to a voice message that explains the nature of the emergency.
Not only do voice alarm systems provide clear directions to people in the building during an emergency, but they also make it easy to send live messages and accurate instructions to people unfamiliar with the surroundings. The result is an improved staged evacuation management.
A disadvantage of sound alarms (bells and sirens) is that the information transmitted is binary - on or off -, without any clarification or finesse in the message.
So, what is needed is an alarm that conveys more useful information, and a message that is less easy to ignore. Voice alarm (VA) systems are a huge leap forward, instead of a bell or siren, a recorded message is played through speaker systems that are carefully distributed around the building and designed to provide a measurable level of intelligibility in relation to a defined performance specification. Thus, when the alarm is triggered regardless of location and background noise, the message can be heard and understood. Statistically, it turned out to be much harder to ignore a direct voice command to “leave the building through the nearest exit” than a bell.
In general, voice alarm systems are used in conjunction with the fire alarm system to warn of fire hazards and to effectively organize evacuation so as to avoid panic and chaos. As an additional feature, the system ensures the transfer of information and entertainment (music, advertising).
Each voice alarm is different in terms of size, power requirements, number of circuits and operational requirements. Many manufacturers build voice alarms “on demand” and connect all components via cable, storing voice messages on EPROMs (circuit-mounted microchips) to operate as desired.