Review of Audible Alarm Signal Waking Effectiveness

Wednesday, February 5, 12:30-2 p.m. ET

Review of Audible Alarm Signal Waking Effectiveness
Joshua Dinaburg, Jensen Hughes

Presenter: Joshua Dinaburg, Jensen Hughes

At risk populations such as the elderly, school-age children, alcohol impaired, and those that are hard of hearing do not fully benefit from conventional smoke alarm alerts, particularly during sleeping hours. Research has been conducted to develop performance requirements to optimize the waking effectiveness for alarm and signaling systems to meet the needs of these at-risk groups. One major finding from experimental tests is that the 520 Hz square wave T-3 sound was the most effective signal to awaken at-risk populations.  However, the implementation of low frequency sounders into battery operated smoke alarms has proven difficult due to the fact that they require up to four times the amount of power as traditional sounders. This webinar will provide a detailed review of the available information and data on this topic that may be used to justify a reduction in the sound pressure level for 520 Hz sounding devices while maintaining superior waking performance to comparable installed high frequency sounding devices.

Who will benefit: Researchers, Engineers, Fire Protection Engineers.

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