Transcription of Speech Intelligibility - GOLD LINE
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Speech Intelligibility - GOLD LINE
Situations where egress is complexor difficult, such as in high-risebuildings or large factories, humanvoice is often used to provide informa-tion. Failure to understand messagecontent can result in several ways. Amessage that is not intelligentmay notbe understood. A message spoken inSpanish to an audience that only under-stands Cantonese will not be under-stood. A person talking rapidly or witha Speech impediment can cause a mes-sage to not be understood. Even a well-spoken, intelligent message in the language native to the listener can bemisunderstood if it is not audible or ifits delivery to the listener is last failure mechanisms are thebasis for the specification, modeling,and measurement of Speech PROBLEMF ires such as the King s Cross fire inLondon in 1987 and an apartment fire inYork, Ontario, have been cited as situa-tions where the lack of intelligible voicecommunication to occupants was a con-tributing factor in the , 2We oftensee paging systems in places such as air-ports and meeting spaces with speakersevery eight to
FALL 2002 www.sfpe.org 18 ensures that approximately 84% of the space has a score of 0.70 or better – as-suming a normal distribution of the results. The 2002 edition of the NFPA 72 Hand- book contains a discussion of why a CIS of 0.70 was used as a baseline. 9 PLANNING, DESIGN, INSTALLING,
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