Volume 16
ATI ’ s solutions range from high-power outdoor speakers to fully integrated comprehensive regional alerting by simultaneous telephone , email , Internet and audio / visual notifications .
ATI ’ s integrated or stand-alone Mass Notification Systems ( MNS ) provide clients with the ability to rapidly communicate both outside and inside of buildings .
With the push of one button , the ATI MNS delivers clear and intelligible voice commands for actionable instructions across various platforms , including :
• Outdoor Voice and Tone
• Indoor Public Address
• Mobile Units
• Telephone Alerting and Network Alerting Systems .
• All components activate simultaneously , saving valuable time .
Acoustic Modeling and Equipment Locations ATI has measured numerous siren signals and background noise levels at various sites .
As a result of researching hundreds of projects , ATI has amassed an unrivaled amount of empirical data .
With this information and in-house expertise in the field of acoustics , ATI has developed an indepth , three-dimensional acoustic model that uses state-of-the-art methodology and a 15-decibel differential above ambient noise to predict outdoor and indoor sound coverage and propagation .
The ATI model uses specific characteristics of the speakers , including power and directivity , together with typical voice frequency characteristics .
The comprehensive examination and analysis of the individual contributions and reflections from
September 2017 Edition
each speaker location , multiple arrival effects and identified shadow regions , are used to determine client-specific speaker orientation and placement to achieve optimal intelligibility and coverage .
An example of an ATI outdoor acoustic coverage map
ATI is the only vendor with an expert design staff in both acoustics and GIS analysis .
Our proprietary model analyzes many factors , including :
• Topography
• Building attenuation
• Reflection and diffraction
• Ground attenuation
• Atmospheric absorption
• Spherical spreading
• Weather conditions
• Sound “ shadows ”
The ATI acoustic model has been compared to other commercially available acoustic modeling programs and has been found to be more reliable according to the empirical results .
MassAlert ®
ATI ’ s wide range of products are controlled and monitored by ATI ’ s MassAlert ® Software .
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