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Авторы: 30 А Б В Г Д Е Ж З И Й К Л М Н О П Р С Т У Ф Х Ц Ч Ш Щ Э Ю Я
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Industrial Noise Control and Acoustics
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- Industrial Noise Control and Acoustics
- Preface
- Contents
- 1 Introduction
- 1.1 NOISE CONTROL
- 1.2 HISTORICAL BACKGROUND
- 1.3 PRINCIPLES OF NOISE CONTROL
- REFERENCES
- 2 Basics of Acoustics
- 2.1 SPEEDOF SOUND
- 2.2 WAVELENGTH, FREQUENCY, AND WAVE NUMBER
- 2.3 ACOUSTIC PRESSURE AND PARTICLE VELOCITY
- 2.4 ACOUSTIC INTENSITY ANDACOUSTIC ENERGY DENSITY
- 2.5 SPHERICAL WAVES
- 2.6 DIRECTIVITY FACTOR AND DIRECTIVITY INDEX
- 2.7 LEVELS AND THE DECIBEL
- 2.8 COMBINATION OF SOUND SOURCES
- 2.9 OCTAVE BANDS
- 2.10 WEIGHTED SOUND LEVELS
- PROBLEMS
- REFERENCES
- 3 Acoustic Measurements
- 3.1 SOUNDLEVEL METERS
- 3.2 INTENSITY LEVEL METERS
- 3.3 OCTAVE BANDFILTERS
- 3.4 ACOUSTIC ANALYZERS
- 3.5 DOSIMETER
- 3.6 MEASUREMENT OF SOUND POWER
- 3.7 NOISE MEASUREMENT PROCEDURES
- PROBLEMS
- REFERENCES
- 4 Transmission of Sound
- 4.1 THE WAVE EQUATION
- 4.2 COMPLEX NUMBER NOTATION
- 4.3 WAVE EQUATION SOLUTION
- 4.4 SOLUTION FOR SPHERICAL WAVES
- 4.5 CHANGES IN MEDIA WITHNORMAL INCIDENCE
- 4.6 CHANGES IN MEDIA WITH OBLIQUE INCIDENCE
- 4.7 SOUND TRANSMISSION THROUGH A WALL
- 4.8 TRANSMISSION LOSS FOR WALLS
- 4.9 APPROXIMATE METHOD FOR ESTIMATING THE TL
- 4.10 TRANSMISSION LOSS FOR COMPOSITE WALLS
- 4.11 SOUND TRANSMISSION CLASS
- 4.12 ABSORPTION OF SOUND
- 4.13 ATTENUATION COEFFICIENT
- PROBLEMS
- REFERENCES
- 5 Noise Sources
- 5.1 SOUND TRANSMISSION INDOORS AND OUTDOORS
- 5.2 FAN NOISE
- 5.3 ELECTRIC MOTOR NOISE
- 5.4 PUMP NOISE
- 5.5 GAS COMPRESSOR NOISE
- 5.6 TRANSFORMER NOISE
- 5.7 COOLING TOWER NOISE
- 5.8 NOISE FROM GAS VENTS
- 5.9 APPLIANCE ANDEQUIPMENT NOISE
- 5.10 VALVE NOISE
- 5.11 AIR DISTRIBUTION SYSTEMNOISE
- 5.12 TRAFFIC NOISE
- 5.13 TRAIN NOISE
- PROBLEMS
- REFERENCES
- 6 Acoustic Criteria
- 6.1 THE HUMAN EAR
- 6.2 HEARING LOSS
- 6.3 INDUSTRIAL NOISE CRITERIA
- 6.4 SPEECH INTERFERENCE LEVEL
- 6.5 NOISE CRITERIA FOR INTERIOR SPACES
- 6.6 COMMUNITY REACTION TO ENVIRONMENTAL NOISE
- 6.7 THE DAY^NIGHT LEVEL
- 6.8 HUD CRITERIA
- 6.9 AIRCRAFT NOISE CRITERIA
- PROBLEMS
- REFERENCES
- 7 Room Acoustics
- 7.1 SURFACE ABSORPTION COEFFICIENTS
- 7.2 STEADY-STATE SOUND LEVEL IN A ROOM
- 7.3 REVERBERATION TIME
- 7.4 EFFECT OF ENERGY ABSORPTION IN THE AIR
- 7.5 NOISE FROMAN ADJACENT ROOM
- 7.6 ACOUSTIC ENCLOSURES
- 7.7 ACOUSTIC BARRIERS
- PROBLEMS
- REFERENCES
- 8 Silencer Design
- 8.1 SILENCER DESIGN REQUIREMENTS
- 8.2 LUMPED-PARAMETER ANALYSIS
- 8.3 THE HELMHOLTZ RESONATOR
- 8.4 SIDE-BRANCH MUFFLERS
- 8.5 EXPANSION CHAMBER MUFFLERS
- 8.6 DISSIPATIVE MUFFLERS
- 8.7 EVALUATION OF THE ATTENUATION COEFFICIENT
- 8.8 COMMERCIAL SILENCERS
- 8.9 PLENUM CHAMBERS
- PROBLEMS
- REFERENCES
- 9 Vibration Isolation for Noise Control
- 9.1 UNDAMPED SINGLE-DEGREE-OF-FREEDOM (SDOF) SYSTEM
- 9.2 DAMPED SINGLE-DEGREE-OF-FREEDOM (SDOF) SYSTEM
- 9.3 DAMPING FACTORS
- 9.4 FORCED VIBRATION
- 9.5 MECHANICAL IMPEDANCE AND MOBILITY
- 9.6 TRANSMISSIBILITY
- 9.7 ROTATING UNBALANCE
- 9.8 DISPLACEMENT EXCITATION
- 9.9 DYNAMIC VIBRATION ISOLATOR
- 9.10 VIBRATION ISOLATION MATERIALS
- 9.11 EFFECTS OF VIBRATION ON HUMANS
- PROBLEMS
- REFERENCES
- 10 Case Studies in Noise Control
- 10.1 INTRODUCTION
- 10.2 FOLDING CARTON PACKING STATION NOISE
- 10.3 METAL CUT-OFF SAW NOISE
- 10.4 PAPER MACHINE WET END
- 10.5 AIR SCRAP HANDLING DUCT NOISE
- 10.6 AIR-OPERATEDHOIST MOTOR
- 10.7 BLANKING PRESS NOISE
- 10.8 NOISE IN A SMALL MEETING ROOM
- PROBLEMS
- REFERENCES
- APPENDIX A Preferred Prefixes in SI (International System of
- APPENDIX B Properties of Gases, Liquids, and Solids
- APPENDIX C Plate Properties of Solidsa
- APPENDIX D Surface Absorption Coefficients _ for Various Materialsa
- Appendix E: Nomenclature