Datasheet | March 17, 2009

Verifier Speech Intelligibility Instrument

Source: 3M Detection Solutions

What good is an announcement over a mass communications system if you can’t understand the message? Voice alarm systems play an important role in alerting occupants and the clarity of that message can contribute to safe evacuation procedures. Many issues can affect the clarity of speech transmission through a voice actuated fire alarm or mass communications system including background noise, reverberation and distortion. The NFPA 72 Annex E (National Fire Alarm Code) has introduced standards that require voice alarm systems to meet specific levels of speech intelligibility.

The Verifier is a special type of sound level meter which offers simplified methodology for measurement of Speech Transmission Index-Public Address (STI-PA), to ensure voice actuated fire alarms, mass communications and PA systems are clearly heard and understood in an emergency.

VIEW THE DATASHEET!

Get unlimited access to:

Trend and Thought Leadership Articles
Case Studies & White Papers
Extensive Product Database
Members-Only Premium Content
Welcome Back! Please Log In to Continue. X

Enter your credentials below to log in. Not yet a member of Tooling Online? Subscribe today.

Subscribe to Tooling Online X

Please enter your email address and create a password to access the full content, Or log in to your account to continue.

or

Subscribe to Tooling Online