Two sound concepts contribute to an effective emergency warning system: audibility and intelligibility.
It is imperative that voice instructions are audible to all building occupants so they are informed and safe. The intelligibility of the emergency message is also essential to occupant safety. A message is intelligible if someone is able to understand the announcement, not just hear that a message is being broadcast.
In addition to audibility and intelligibility, several other factors contribute to the effectiveness of an employee warning system.
- Background and ambient noises: Voice intelligibility is dependent on the level of background noise in your space. The more background noise that exists, the harder it will be for your building’s occupants to hear voice instructions. Factors that contribute to ambient noise include HVAC systems, mechanical and equipment rooms, printers, conversations, and mail rooms.
- Echoes and reverberations: Echoes occur when speech bounces off hard surfaces and can make speech unintelligible, as can reverberation, which blurs words.
- An ineffective loudspeaker system: Your current system may not be adequately powered to overcome existing background noise.
We will measure the impact of all of these factors in your space, then design a custom employee warning system that will emit audible and intelligible voice instructions. Contact us to get started!