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Engineering noise control : theory and practice / / David A. Bies and Colin H. Hansen
| Engineering noise control : theory and practice / / David A. Bies and Colin H. Hansen |
| Autore | Bies David A. <1925-, > |
| Edizione | [Fourth edition.] |
| Pubbl/distr/stampa | Hoboken : , : Taylor and Francis, , 2009 |
| Descrizione fisica | 1 online resource (768 p.) : illustrations |
| Disciplina | 620.2/3 |
| Soggetto topico |
Noise control
Machinery Machinery - Noise |
| Soggetto genere / forma | Electronic books. |
| ISBN |
1-315-27346-2
1-4822-8870-2 1-282-23461-7 9786612234613 0-203-87240-1 |
| Formato | Materiale a stampa  |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-9910454892103321 |
Bies David A. <1925-, >
|
||
| Hoboken : , : Taylor and Francis, , 2009 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||
Engineering noise control : theory and practice / / David A. Bies and Colin H. Hansen
| Engineering noise control : theory and practice / / David A. Bies and Colin H. Hansen |
| Autore | Bies David A. <1925-, > |
| Edizione | [Fourth edition.] |
| Pubbl/distr/stampa | Hoboken : , : Taylor and Francis, , 2009 |
| Descrizione fisica | 1 online resource (768 p.) : illustrations |
| Disciplina | 620.2/3 |
| Soggetto topico |
Noise control
Machinery Machinery - Noise |
| ISBN |
1-315-27346-2
1-4822-8870-2 1-282-23461-7 9786612234613 0-203-87240-1 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-9910778058003321 |
|
Bies David A. <1925-, >
|
||
| Hoboken : , : Taylor and Francis, , 2009 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||
Engineering noise control : theory and practice / / David A. Bies and Colin H. Hansen
| Engineering noise control : theory and practice / / David A. Bies and Colin H. Hansen |
| Autore | Bies David A. <1925-, > |
| Edizione | [Fourth edition.] |
| Pubbl/distr/stampa | Hoboken : , : Taylor and Francis, , 2009 |
| Descrizione fisica | 1 online resource (768 p.) : illustrations |
| Disciplina | 620.2/3 |
| Soggetto topico |
Noise control
Machinery Machinery - Noise |
| ISBN |
1-315-27346-2
1-4822-8870-2 1-282-23461-7 9786612234613 0-203-87240-1 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto |
COVER -- HALF TITLE -- TITLE PAGE -- COPYRIGHT PAGE -- CONTENTS -- PREFACE -- ACKNOWLEDGMENTS -- CHAPTER 1 FUNDAMENTALS AND BASIC TERMINOLOGY -- 1.1 INTRODUCTION -- 1.2 NOISE-CONTROL STRATEGIES -- 1.2.1 Sound Source Modification -- 1.2.2 Control of the Transmission Path -- 1.2.3 Modification of the Receiver -- 1.2.4 Existing Facilities -- 1.2.5 Facilities in the Design Stage -- 1.2.6 Airborne versus Structure-borne Noise -- 1.3 ACOUSTIC FIELD VARIABLES -- 1.3.1 Variables -- 1.3.2 The Acoustic Field -- 1.3.3 Magnitudes -- 1.3.4 The Speed of Sound -- 1.3.5 Dispersion -- 1.3.6 Acoustic Potential Function -- 1.4 WAVE EQUATION -- 1.4.1 Plane and Spherical Waves -- 1.4.2 Plane Wave Propagation -- 1.4.3 Spherical Wave Propagation -- 1.4.4 Wave Summation -- 1.4.5 Plane Standing Waves -- 1.4.6 Spherical Standing Waves -- 1.5 MEAN SQUARE QUANTITIES -- 1.6 ENERGY DENSITY -- 1.7 SOUND INTENSITY -- 1.7.1 Definitions -- 1.7.2 Plane Wave and Far Field Intensity -- 1.7.3 Spherical Wave Intensity -- 1.8 SOUND POWER -- 1.9 UNITS -- 1.10 SPECTRA -- 1.10.1 Frequency Analysis -- 1.11 COMBINING SOUND PRESSURES -- 1.11.1 Coherent and Incoherent Sounds -- 1.11.2 Addition of Coherent Sound Pressures -- 1.11.3 Beating -- 1.11.4 Addition of Incoherent Sounds (Logarithmic Addition -- 1.11.5 Subtraction of Sound Pressure Levels -- 1.11.6 Combining Level Reductions -- 1.12 IMPEDANCE -- 1.12.1 Mechanical Impedance, Z< -- sub> -- m< -- /sub> -- -- 1.12.2 Specific Acoustic Impedance, Z< -- sub> -- s< -- /sub> -- -- 1.12.3 Acoustic Impedance, Z< -- sub> -- A< -- /sub> -- -- 1.13 FLOW RESISTANCE -- CHAPTER 2 THE HUMAN EAR -- 2.1 BRIEF DESCRIPTION OF THE EAR -- 2.1.1 External Ear -- 2.1.2 Middle Ear -- 2.1.3 Inner Ear -- 2.1.4 Cochlear Duct or Partition -- 2.1.5 Hair Cells -- 2.1.6 Neural Encoding -- 2.1.7 Linear Array of Uncoupled Oscillators.
2.2 MECHANICAL PROPERTIES OF THE CENTRAL PARTITION -- 2.2.1 Basilar Membrane Travelling Wave -- 2.2.2 Energy Transport and Group Speed -- 2.2.3 Undamping -- 2.2.4 The Half Octave Shift -- 2.2.5 Frequency Response -- 2.2.6 Critical Frequency Band -- 2.2.7 Frequency Resolution -- 2.3 NOISE INDUCED HEARING LOSS -- 2.4 SUBJECTIVE RESPONSE TO SOUND PRESSURE LEVEL -- 2.4.1 Masking -- 2.4.2 Loudness -- 2.4.3 Comparative Loudness and the Phon -- 2.4.4 Relative Loudness and the Sone -- 2.4.5 Pitch -- CHAPTER 3 INSTRUMENTATION FOR NOISE MEASUREMENT AND ANALYSIS -- 3.1 MICROPHONES -- 3.1.1 Condenser Microphone -- 3.1.2 Piezoelectric Microphone -- 3.1.3 Pressure Response -- 3.1.4 Microphone Sensitivity -- 3.1.5 Field Effects and Calibration -- 3.1.6 Microphone Accuracy -- 3.2 WEIGHTING NETWORKS -- 3.3 SOUND LEVEL METERS -- 3.4 CLASSES OF SOUND LEVEL METER -- 3.5 SOUND LEVEL METER CALIBRATION -- 3.5.1 Electrical Calibration -- 3.5.2 Acoustic Calibration -- 3.5.3 Measurement Accuracy -- 3.6 NOISE MEASUREMENTS USING SOUND LEVEL METERS -- 3.6.1 Microphone Mishandling -- 3.6.2 Sound Level Meter Amplifier Mishandling -- 3.6.3 Microphone and Sound Level Meter Response Characteristics -- 3.6.4 Background Noise -- 3.6.5 Wind Noise -- 3.6.6 Temperature -- 3.6.7 Humidity and Dust -- 3.6.8 Reflections from Nearby Surfaces -- 3.7 TIME-VARYING SOUND -- 3.8 NOISE LEVEL MEASUREMENT -- 3.9 DATA LOGGERS -- 3.10 PERSONAL SOUND EXPOSURE METER -- 3.11 RECORDING OF NOISE -- 3.12 SPECTRUM ANALYSERS -- 3.13 INTENSITY METERS -- 3.13.1 Sound Intensity by the p-u Method -- 3.13.1.1 Accuracy of the p-u Method -- 3.13.2 Sound Intensity by the p-p Method -- 3.13.2.1 Accuracy of the p-p Method -- 3.13.3 Frequency Decomposition of the Intensity -- 3.13.3.1 Direct Frequency Decomposition -- 3.13.3.2 Indirect Frequency Decomposition -- 3.14 ENERGY DENSITY SENSORS. 3.15 SOUND SOURCE LOCALISATION -- 3.15.1 Nearfield Acoustic Holography (NAH -- 3.15.1.1 Summary of the Underlying Theory -- 3.15.2 Statistically Optimised Nearfield Acoustic Holography (SONAH -- 3.15.3 Helmholtz Equation Least Squares Method (HELS -- 3.15.4 Beamforming -- 3.15.4.1 Summary of the Underlying Theory -- 3.15.5 Direct Sound Intensity measurement -- CHAPTER 4 CRITERIA -- 4.1 INTRODUCTION -- 4.1.1 Noise Measures -- 4.1.1.1 A-weighted Equivalent Continuous Noise Level, L< -- sub> -- Aeq< -- /sub> -- -- 4.1.1.2 A-weighted Sound Exposure -- 4.1.1.3 A-weighted Sound Exposure Level, L< -- sub> -- AE< -- /sub> -- or SEL -- 4.1.1.4 Day-Night Average Sound Level, L< -- sub> -- dn< -- /sub> -- or DNL -- 4.1.1.5 Community Noise Equivalent Level, L< -- sub> -- den< -- /sub> -- or CNEL -- 4.1.1.6 Effective Perceived Noise Level, L< -- sub> -- PNE< -- /sub> -- -- 4.1.1.7 Other Descriptors -- 4.2 HEARING LOSS -- 4.2.1 Threshold Shift -- 4.2.2 Presbyacusis -- 4.2.3 Hearing Damage -- 4.3 HEARING DAMAGE RISK -- 4.3.1 Requirements for Speech Recognition -- 4.3.2 Quantifying Hearing Damage Risk -- 4.3.3 International Standards Organisation Formulation -- 4.3.4 Alternative Formulations -- 4.3.4.1 Bies and Hansen Formulation -- 4.3.4.2 Dresden Group Formulation -- 4.3.5 Observed Hearing Loss -- 4.3.6 Some Alternative Interpretations -- 4.4 HEARING DAMAGE RISK CRITERIA -- 4.4.1 Continuous Noise -- 4.4.2 Impulse Noise -- 4.4.3 Impact Noise -- 4.5 IMPLEMENTING A HEARING CONSERVATION PROGRAM -- 4.6 SPEECH INTERFERENCE CRITERIA -- 4.6.1 Broadband Background Noise -- 4.6.2 Intense Tones -- 4.7 PSYCHOLOGICAL EFFECTS OF NOISE -- 4.7.1 Noise as a Cause of Stress -- 4.7.2 Effect on Behaviour and Work Efficiency -- 4.8 AMBIENT NOISE LEVEL SPECIFICATION -- 4.8.1 Noise Weighting Curves -- 4.8.1.1 NR Curves -- 4.8.1.2 NC Curves. 4.8.1.3 RC Curves -- 4.8.1.4 NCB Curves -- 4.8.1.5 RNC Curves -- 4.8.2 Comparison of Noise Weighting Curves with dB(A) Specifications -- 4.8.3 Speech Privacy -- 4.9 ENVIRONMENTAL NOISE LEVEL CRITERIA -- 4.9.1 A-weighting Criteria -- 4.10 ENVIRONMENTAL NOISE SURVEYS -- 4.10.1 Measurement Locations -- 4.10.2 Duration of the Measurement Survey -- 4.10.3 Measurement Parameters -- 4.10.4 Noise Impact -- CHAPTER 5 SOUND SOURCES AND OUTDOOR SOUND PROPAGATION -- 5.1 INTRODUCTION -- 5.2 SIMPLE SOURCE -- 5.2.1 Pulsating Sphere -- 5.2.2 Fluid Mechanical Monopole Source -- 5.3 DIPOLE SOURCE -- 5.3.1 Pulsating Doublet or Dipole (Far-field Approximation -- 5.3.2 Pulsating Doublet or Dipole (Near-field -- 5.3.3 Oscillating Sphere -- 5.3.4 Fluid Mechanical Dipole Source -- 5.4 QUADRUPOLE SOURCE (FAR-FIELD APPROXIMATION -- 5.4.1 Lateral Quadrupole -- 5.4.2 Longitudinal Quadrupole -- 5.4.3 Fluid Mechanical Quadrupole Source -- 5.5 LINE SOURCE -- 5.5.1 Infinite Line Source -- 5.5.2 Finite Line Source -- 5.6 PISTON IN AN INFINITE BAFFLE -- 5.6.1 Far Field -- 5.6.2 Near Field On-axis -- 5.6.3 Radiation Load of the Near Field -- 5.7 INCOHERENT PLANE RADIATOR -- 5.7.1 Single Wall -- 5.7.2 Several Walls of a Building or Enclosure -- 5.8 DIRECTIVITY -- 5.9 REFLECTION EFFECTS -- 5.9.1 Simple Source Near a Reflecting Surface -- 5.9.2 Observer Near a Reflecting Surface -- 5.9.3 Observer and Source Both Close to a Reflecting Surface -- 5.10 REFLECTION AND TRANSMISSION AT A PLANE / TWO MEDIA INTERFACE -- 5.10.1 Porous Earth -- 5.10.2 Plane Wave Reflection and Transmission -- 5.10.3 Spherical Wave Reflection at a Plane Interface -- 5.10.4 Effects of Turbulence -- 5.11 SOUND PROPAGATION OUTDOORS, GENERAL CONCEPTS -- 5.11.1 Methodology -- 5.11.2 Limits to Accuracy of Prediction -- 5.11.3 Outdoor Sound Propagation Prediction Schemes -- 5.11.4 Geometrical Spreading, K. 5.11.5 Directivity Index, DI< -- sub> -- M< -- /sub> -- -- 5.11.6 Excess Attenuation Factor, A< -- sub> -- E< -- /sub> -- -- 5.11.7 Air Absorption, A< -- sub> -- a< -- /sub> -- -- 5.11.8 Shielding by Barriers, Houses and Process Equipment/Industrial Buildings, A< -- sub> -- bhp< -- /sub> -- -- 5.11.9 Attenuation due to Forests and Dense Foliage, A< -- sub> -- f< -- /sub> -- -- 5.11.10 Ground Effects -- 5.11.10.1 CONCAWE Method -- 5.11.10.2 Simple Method (Hard or Soft Ground) -- 5.11.10.3 Plane Wave Method -- 5.11.10.4 ISO 9613-2 (1996) Method -- 5.11.10.5 Detailed, Accurate and Complex Method -- 5.11.11 Image Inversion and Increased Attenuation at Large Distance -- 5.11.12 Meteorological Effects -- 5.11.12.1 Attenuation in the Shadow Zone (Negative Sonic Gradient) -- 5.11.12.2 Meteorological Attenuation Calculated according to Tonin (1985) -- 5.11.12.3 Meteorological Attenuation Calculated according to CONCAWE -- 5.11.12.4 Meteorological Attenuation Calculated according to ISO 9613-2 (1996) -- 5.11.13 Combined Excess Attenuation Model -- 5.11.14 Accuracy of Outdoor Sound Predictions -- CHAPTER 6 SOUND POWER, ITS USE AND MEASUREMENT -- 6.1 INTRODUCTION -- 6.2 RADIATION IMPEDANCE -- 6.3 RELATION BETWEEN SOUND POWER AND SOUND PRESSURE -- 6.4 RADIATION FIELD OF A SOUND SOURCE -- 6.4.1 Free-field Simulation in an Anechoic Room -- 6.4.2 Sound Field Produced in an Enclosure -- 6.5 DETERMINATION OF SOUND POWER USING INTENSITY MEASUREMENTS -- 6.6 DETERMINATION OF SOUND POWER USING CONVENTIONAL PRESSURE MEASUREMENTS -- 6.6.1 Measurement in Free or Semi-free Field -- 6.6.2 Measurement in a Diffuse Field -- 6.6.2.1 Substitution Method -- 6.6.2.2 Absolute Method -- 6.6.3 Field Measurement -- 6.6.3.1 Semi-reverberant Field Measurements by Method One -- 6.6.3.2 Semi-reverberant Field Measurements by Method Two. 6.6.3.3 Semi-reverberant Field Measurements by Method Three. |
| Record Nr. | UNINA-9910808324603321 |
|
Bies David A. <1925-, >
|
||
| Hoboken : , : Taylor and Francis, , 2009 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||