Transcription of Voice Evacuation Systems - Smoke Detection, CO Detection ...
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A P P L I C A T I O N S G U I D E. Voice Evacuation Systems A P P L I C AT I O N S G U I D E : V O I C E E VA C U AT I O N S Y S T E M S. Voice Evacuation Systems Contents Section 1: Factors that are controllable by a Voice Evacuation system What is the driving factor for Voice Evacuation Systems ?..3 Signal-to-noise Section 2: Basics of Speaker Frequency Response ..7. What is sound?..3 Total harmonic How does sound travel?..3 Speaker Section 3: Measuring Sound Voltage drop on speaker Sound Pressure Level (SPL)..3 Factors that are not controllable by a system Room A-Weighted Countering the effects of B-Weighted Section 8: Testing for C-Weighted Measurement Adding SPL from two Intelligibility Measurement dB Rules of Quantitive Method Tips and Section 4: Basics of Speaker Testing Methods: When and Cone Use of Intelligibility High Impedance ( Volt/25 Volt) Distributed Line Direct injection method for test Section 5: Basics of Voice Evacuation system Calibrating Signal Section 6: Laws, Codes and Standards Method Relevant to Voice Evacuation Method Accessibility STI/STIPA Test Anechoic vs.
APPLICATIONS GUIDE: VOICE EVACUATION SYSTEMS 4 Decibel Audio levels are commonly used by engineers using “Decibels” (dB) to express ratios between levels, such …
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