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Low Frequency Alarm Signal Effectiveness

About This Webinar

For decades the requirements for alarm signaling have required a sound pressure level of 85 dBA at a distance of 10 feet for single and multiple station smoke alarms. Research into waking effectiveness for sleeping occupants has shown an increase in performance for low frequency harmonic tones, especially for at-risk groups including the hard of hearing, children, and those affected by drugs and alcohol. Producing an equivalent 85 dBA alarm tone at this frequency requires up to four times the raw signal power compared to traditional alarms. This study, conducted for the Fire Protection Research Foundation, compared 40 years of code requirements and sleeping studies to determine if a reduction in the required sound pressure level can be justified for low frequency tones that would still provide better waking effectiveness compared to traditional alarm signals. The results are discussed and assessed to justify potential changes to codes and standards.

Who can view: Everyone
Webinar Price: Free
Featured Presenters
Webinar hosting presenter
Fire Program Manager, International Association of Fire Chiefs
Richard Miller has over 43 years of experience in the fire service industry as a career and volunteer firefighter and now as a Fire Service Program Manager for the Firefighter Safety Research Center at the IAFC. He has held the positions from Firefighter to Training Officer for the City of Fairfax Fire Department in Virginia. His goal is to provide knowledgeable factual information to the fire service industry to meet a diverse community by established leadership, that meets the needs of the leading Fire Chiefs.
Webinar hosting presenter
Fire Test Specialist, CSA Group
Joshua Dinaburg, PE, is a Mechanical Engineer with nineteen years’ experience. He is the Fire Test Specialist for the CSA Group, with a primary focus on fire hazards of energy storage systems including the design and operation of a fire test laboratory used for testing and certification of lithium-ion battery energy storage systems. Mr. Dinaburg has designed, developed, and implemented a variety of research and testing programs in fire detection, signaling, and suppression including evaluation of fire hazards from electrical equipment, energy storage systems, flammable liquid commodities, residential cooking, wildfire, and 3D printed materials. Other test programs have included analytical and full-scale evaluation of aspiration and spot smoke detection, beam smoke detection, video smoke and flame detection, optical flame detection, and low frequency alarm signaling effectiveness.
Hosted By
International Association of Fire Chiefs webinar platform hosts Low Frequency Alarm Signal Effectiveness
The International Association of Fire Chiefs represents the leadership of over 1.2 million firefighters and emergency responders. IAFC members are the world's leading experts in firefighting, emergency medical services, terrorism response, hazardous materials spills, natural disasters, search and rescue, and public safety legislation. Since 1873, the IAFC has provided a forum for its members to exchange ideas and uncover the latest products and services available to first responders.