Manuals / Tyco / Household Appliance / Smoke Alarm

Tyco 579-769 specifications

Models: 579-769

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speaker dispersion angle, 2-10 Speaker layout patterns, 2-15 speaker placement, 2-7 speaker, sensitivity, 2-10 speech pattern, 3-4

speech pattern, modulations, 2-5 STI method, 3-7, 7-3

STI-CIS Intelligibility Measurement System, 3-8

STIpa, 3-7

STITEL, 3-7

system design tools, 3-9

IN-2

T

transponder, 4-3, 7-3

V

voice alarm systems, 4-2

W

wall mounted speakers, 2-16

wall mounted speakers, advantages, 2-16 wall mounted speakers, design, 2-17

wall mounted speakers, disadvantages, 2-16 word scores, 3-7

Image 68

Tyco 579-769 specifications

Contents

Guideline for Designing Emergency Voice/Alarm Communications Systems for Speech Intelligibility579-769Rev. C Fire Alarm Audio Applications GuidePage Copyrights and Trademarks Page Table of Contents Chapter 1 Speech Intelligibility OverviewChapter 2 Background Information Chapter 3 Speech IntelligibilityChapter 5 Regulatory Issues Chapter 6 Speaker System Design MethodChapter 7 Glossary of Terms Related Publications See Page # Chapter Speech Intelligibility OverviewTopic Speech Intelligibility Importance Designing for IntelligibilitySee Page # Chapter Background InformationTopic Equation 2-3.Power Relationships V = I ⋅ RP = V ⋅ Basic Audio Math20⋅10−6 Basic Audio Math, Continued= 20log⎜ Sound and Hearing The Relationship Between Sound and HearingConsonants and Vowels The Nature of SpeechIntroduction Room Acoustics Introduction ReverberationRoom Acoustics, Continued • Increasing the Signal-to-NoiseRatio Room Acoustics, ContinuedFigure 2-3.dB and Distance Chart Speaker Basics⎝ D2 Equation 2-8.The Inverse Square LawSpeaker Basics, Continued SPL = Sensitivity + 20 logEquation 2-9. On-AxisSPL Calculation ⎡Dr⎤Simplex Ceiling Mount Speaker1− cos ⎜ 6dB/divisionSpeaker Basics, Continued Figure 2-5.Speaker CoverageFigure 2-6.Maximum Theoretical Coverage Angle Angle Off-Axisθ Polar Loss0.0 dB + Distance LossEquation 2-11.Coverage Area Calculations Listener Height = 5 FeetCeiling CoverageTable 2-2.Layout Pattern Selection Guide Table 2-3.SPL Variation by Layout Pattern2x Edge-to-Edge Minimum OverlapDistributed Wall Mounted Systems Distributed Wall Mounted Systems, Continued Figure 2-8.Wall Mount Speaker Coverage PatternWall Mounted Speakers In Feet RoomEdge-edge Minimum-Overlap Full-Overlap Distributed Wall Mounted Systems, ContinuedChapter Speech Intelligibility TopicSee Page # Influences and IntelligibilityInfluences on Intelligibility With Added Noise Influences on Intelligibility, ContinuedNo Noise Influences on Intelligibility, Continued Continued on next pageMicrophone Technique Influences on Intelligibility, ContinuedDistortion Measures of Intelligibility EXCELLENTGOOD FAIRMeasures of Intelligibility, Continued Talkbox Practical Measurement of IntelligibilitySTI-CISAnalyzer Tools for Predicting Intelligibility Introduction Acoustical Modeling SoftwarePage Emergency Voice/Alarm Communications Systems ChapterTopic See Page #Advantages • Backup Power Source Batteries or GeneratorDedicated Power Feed • Supervision of All Critical Signal Paths•A dedicated master microphone Figure 4-2.Class A and B Speaker Circuit Wiring See Page # Chapter Regulatory IssuesTopic From NFPA 72, 2002 Edition AudibilityFrom NFPA 72, 2002 Edition Audibility, Continued High Background Noise Large AreasIntelligibility Intelligibility, Continued From NFPA 72, 2002 EditionPage Chapter Speaker System Design Method TopicSee Page # Design MethodSpeaker Design Method of the tone with respect to the speech signal Applying the Methods Figure 6-1.iTool Office Space ExampleFlooring = Ceiling =Applying the Methods, Continued Figure 6-2.Office Space Speaker Location GuideFigure 6-3.Office Space SPL Distribution Continued on next pageFigure 6-5.Corridor Design Example Dimensions =Applying the Methods, Continued Flooring =Figure 6-6.Corridor Speaker Location Guide Figure 6-7.Corridor SPL DistributionFigure 6-8.Corridor Reverberation Time Results and Coverage InformationFigure 6-9.iTool Gymnasium Example Dimensions =Applying the Methods, Continued Flooring =Figure 6-10.Gymnasium Speaker Location Guide Figure 6-11.Gymnasium SPL DistributionFigure 6-12.Gymnasium Reverberation Time Results Applying the Methods, ContinuedApplying the Methods, Continued Figure 6-13.Lobby ExampleFigure 6-14.Lobby Example Figure 6-15.Lobby Layout Figure 6-16.Lobby Speaker Location GuideFigure 6-17.Lobby SPL Distribution Applying the Methods, ContinuedApplying the Methods, Continued Lobby, continuedConclusion In ClosingPage Chapter Glossary of Terms TopicSee Page # GlossaryGlossary Glossary or TermsGlossary, Continued Page Index Page Page 579-769Rev. C