The Voice: How to Design Emergency Communication Systems with Announcements

With NFPA 72’s speech intelligibility requirements in mind, here are considerations for designing an emergency communications system (ECS) with voice announcements.

Most professionals who deal in mass notification emergency communication (MNEC) systems are aware of the elevated speech intelligibility requirements dictated by NFPA 72.

What many don’t know, however, is how to deliver an audio system that meets those requirements.

In this free download, Shane Clary, Ph.D, a 37-year veteran of the security and fire alarm industry, lays out basic considerations to take when designing an emergency communications system (ECS) that uses voice announcements. MNEC systems are in high-demand, so understanding how to meet speech intelligibility requirements is essential.

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