Visit systemsensor.com/webinars to view the System Sensor webinar archive.
Posts Tagged ‘ intelligibility ’
Code Speaks Louder About Intelligibility
NFPA 72-2010 refines and more carefully defines the concept of intelligibility.
Intelligibility 101
Mike Knoras is a Project Manager for the Atlanta regional office of Aon Fire Protection Engineering Corporation (Aon FPE). Aon FPE consults on matters of life safety, code and fire protection, which includes emergency voice systems, mass notification systems and other systems that require audibility and intelligibility. As a licensed professional engineer with master’s degrees in electrical engineering and fire protection engineering, his vast experience spans fire alarm and life safety systems and emergency voice systems placed in high-rise buildings, public assembly areas, and large mixed-use occupancies.
New White Paper Clarifies NFPA 72-2010 and DOD Intelligibility Requirements
As a relatively new concept to fire and life safety systems, intelligibility requirements will change how these systems are designed and installed. Designing for intelligibility can be complicated by a variety of factors. While the properties of the speaker have some impact on the intelligibility of a system, most factors have to do with the occupancy itself. So while important, speaker choice will not always ensure intelligibility.
Proper Measures Avoid Having Too Few or Too Many Devices
Measuring intelligibility for fire and emergency communications systems (ECSs) will become more commonplace as local jurisdictions adopt the 2010 version of NFPA 72. Taking proper measures can be complex, and most fire and life safety system designers have to work around existing building features that affect intelligibility.
Got Intelligibility? Be Heard and Understood
Emergency communications systems have amplified the need for effective voice communications systems. NFPA 72-2010 formally addresses measuring voice intelligibility to ensure what is said is heard properly.