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Tyco 579-769 specifications

Models: 579-769

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Tyco 579-769 specifications

Contents

Communications Systems for Speech Intelligibility Guideline for Designing Emergency Voice/Alarm579-769Rev. C Fire Alarm Audio Applications GuidePage Copyrights and Trademarks Page Chapter 1 Speech Intelligibility Overview Table of ContentsChapter 2 Background Information Chapter 3 Speech IntelligibilityChapter 6 Speaker System Design Method Chapter 5 Regulatory IssuesChapter 7 Glossary of Terms Related Publications Chapter Speech Intelligibility Overview TopicSee Page # Intelligibility Speech Intelligibility Importance Designing forChapter Background Information TopicSee Page # V = I ⋅ R Equation 2-3.Power RelationshipsP = V ⋅ Basic Audio MathBasic Audio Math, Continued = 20log⎜20⋅10−6 The Relationship Between Sound and Hearing Sound and HearingThe Nature of Speech IntroductionConsonants and Vowels Introduction Reverberation Room AcousticsRoom Acoustics, Continued Room Acoustics, Continued • Increasing the Signal-to-NoiseRatioSpeaker Basics Figure 2-3.dB and Distance Chart⎝ D2 Equation 2-8.The Inverse Square LawSPL = Sensitivity + 20 log Speaker Basics, ContinuedEquation 2-9. On-AxisSPL Calculation ⎡Dr⎤Ceiling Mount Speaker Simplex1− cos ⎜ 6dB/divisionFigure 2-5.Speaker Coverage Figure 2-6.Maximum Theoretical Coverage AngleSpeaker Basics, Continued Polar Loss Angle Off-Axisθ0.0 dB + Distance LossListener Height = 5 Feet Equation 2-11.Coverage Area CalculationsCeiling CoverageTable 2-3.SPL Variation by Layout Pattern Table 2-2.Layout Pattern Selection Guide2x Edge-to-Edge Minimum OverlapDistributed Wall Mounted Systems Figure 2-8.Wall Mount Speaker Coverage Pattern Distributed Wall Mounted Systems, ContinuedWall Mounted Speakers In Feet RoomDistributed Wall Mounted Systems, Continued Edge-edge Minimum-Overlap Full-OverlapTopic Chapter Speech IntelligibilitySee Page # Influences and IntelligibilityInfluences on Intelligibility Influences on Intelligibility, Continued No NoiseWith Added Noise Continued on next page Influences on Intelligibility, ContinuedInfluences on Intelligibility, Continued DistortionMicrophone Technique EXCELLENT Measures of IntelligibilityGOOD FAIRMeasures of Intelligibility, Continued Practical Measurement of Intelligibility STI-CISAnalyzerTalkbox Introduction Acoustical Modeling Software Tools for Predicting IntelligibilityPage Chapter Emergency Voice/Alarm Communications SystemsTopic See Page #• Backup Power Source Batteries or Generator AdvantagesDedicated Power Feed • Supervision of All Critical Signal Paths•A dedicated master microphone Figure 4-2.Class A and B Speaker Circuit Wiring Chapter Regulatory Issues TopicSee Page # Audibility From NFPA 72, 2002 EditionFrom NFPA 72, 2002 Edition High Background Noise Large Areas Audibility, ContinuedIntelligibility From NFPA 72, 2002 Edition Intelligibility, ContinuedPage Topic Chapter Speaker System Design MethodSee Page # Design MethodSpeaker Design Method of the tone with respect to the speech signal Figure 6-1.iTool Office Space Example Applying the MethodsFlooring = Ceiling =Figure 6-2.Office Space Speaker Location Guide Applying the Methods, ContinuedFigure 6-3.Office Space SPL Distribution Continued on next pageDimensions = Figure 6-5.Corridor Design ExampleApplying the Methods, Continued Flooring =Figure 6-7.Corridor SPL Distribution Figure 6-6.Corridor Speaker Location GuideFigure 6-8.Corridor Reverberation Time Results and Coverage InformationDimensions = Figure 6-9.iTool Gymnasium ExampleApplying the Methods, Continued Flooring =Figure 6-11.Gymnasium SPL Distribution Figure 6-10.Gymnasium Speaker Location GuideFigure 6-12.Gymnasium Reverberation Time Results Applying the Methods, ContinuedFigure 6-13.Lobby Example Figure 6-14.Lobby ExampleApplying the Methods, Continued Figure 6-16.Lobby Speaker Location Guide Figure 6-15.Lobby LayoutFigure 6-17.Lobby SPL Distribution Applying the Methods, ContinuedLobby, continued Applying the Methods, ContinuedIn Closing ConclusionPage Topic Chapter Glossary of TermsSee Page # GlossaryGlossary or Terms GlossaryGlossary, Continued Page Index Page Page 579-769Rev. C