Testing, testing... 1, 2, 3 : the 1999 edition of NFPA 72, National Fire Alarm Code, incluldes a new appendix with intelligibility guidelines for voice annunciation systems
MAP20078039384Testing, testing... 1, 2, 3 : the 1999 edition of NFPA 72, National Fire Alarm Code, incluldes a new appendix with intelligibility guidelines for voice annunciation systems / Alisa WilfEn: NFPA Journal. - Miami : NFPA = ISSN 1054-8793. - Número 6 93 1999