Category Archives : Mass Notification


Amplify Messaging with Acoustics Design

Until recently, thoughtful acoustical planning has been reserved for sound systems in places like concert halls and theatres. However, according to Robert Hammond, PSP, NICET III (emergency communications system designer and principal consultant) and Ethan Salter, PE, LEED AP (acoustician and principal consultant) of Charles M. Salter Associates Inc. – a San Francisco engineering firm specializing in acoustics, audiovisual, telecommunications, security and emergency communications – the growing emphasis on emergency messaging intelligibility amplifies the role of acoustics and audibility in many types of facilities. Where they see room for improvement is in recognizing the multiple factors that impact intelligibility, and the necessity of engaging acousticians earlier in the design process.


‘Get Out’ a New Plan for Messaging

“If only we had known” is a common refrain after a tragedy. We wish we knew what was in store for us ahead of time so that we could plan accordingly and avert loss. However, that’s not always possible.


Risk Analyses, Emergency Plans Impact ECS Design

Ray Grill, PE, FSFPE, LEED AP, knows his way around fire and life safety design, especially when it comes to integrating mass notification (MNS) and emergency communications systems (ECS) with fire systems.