National Academies Press: OpenBook

Improving Intelligibility of Airport Terminal Public Address Systems (2017)

Chapter: Appendix C - Abbreviations, Acronyms, and Initialisms

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Page 143
Suggested Citation:"Appendix C - Abbreviations, Acronyms, and Initialisms." National Academies of Sciences, Engineering, and Medicine. 2017. Improving Intelligibility of Airport Terminal Public Address Systems. Washington, DC: The National Academies Press. doi: 10.17226/24839.
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Page 143
Page 144
Suggested Citation:"Appendix C - Abbreviations, Acronyms, and Initialisms." National Academies of Sciences, Engineering, and Medicine. 2017. Improving Intelligibility of Airport Terminal Public Address Systems. Washington, DC: The National Academies Press. doi: 10.17226/24839.
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Page 144

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143 ACT Acoustical tile A/D Analog to digital ADA Americans with Disabilities Act ADS Acoustically distinguishable space AHJ Authority having jurisdiction ANN Announce or announcement ANSI American National Standards Institute AODB Airport operational database APM Automated people mover ASHRAE Formerly known as the American Society of Heating, Refrigeration and Air-conditioning Engineers ASTM American Society for Testing Materials A/V Audiovisual CCD CCD Ergonomic and Design Consultants CSA Cross-Spectrum Acoustics, Inc. D/A Digital to analog dBu Decibel unit of measure for electrical noise DSP Digital signal processor EPA U.S. Environmental Protection Agency EQ Equalization FIDS Flight information display system GBF Gain before feedback FASA Fellow of the Acoustical Society of America FAES Fellow of the Audio Engineering Society Ft. Feet or foot HF Human factors HKS HKS Architects, Inc. Hz Hertz or once cycle per second dB Decibel dBA Decibel, A-weighted HVAC Heating, ventilation, and air conditioning IEC International Electrotechnical Commission NC Noise criteria NFPA National Fire Protection Association NRC Noise reduction coefficient OITC Outdoor/Indoor Transmission Class PA Public address PE Professional Engineer A p p e n d i x C Abbreviations, Acronyms, and Initialisms

144 improving intelligibility of Airport Terminal public Address Systems PBX Private branch exchange (phone server) PhD Doctorate of Philosophy RASTI Rapid speech transmission index RT, RT60 Reverberation time SA Surface area SNR Signal-to-noise ratio SPL Sound pressure level STI Speech transmission index STC Sound transmission class STIPA Speech transmission index for PA THD Total harmonic distortion TTS Text-to-speech VA Voice address

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TRB's Airport Cooperative Research Program (ACRP) Research Report 175: Improving Intelligibility of Airport Terminal Public Address Systems provides design guidelines to improve public address systems for all types and sizes of airport terminal environments. The guidelines include a summary of data on public address systems, terminal finishes and background noise levels in a variety of airport terminals, identification of acoustical shortcomings, and the results of impacts on existing public address systems. The report provides options for enhancing intelligibility in existing airport terminals as well as ensuring intelligibility in new terminal designs.

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