Holdings: Foundations of engineering acoustics

Foundations of engineering acoustics:

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Bibliographic Details
Main Author:	Fahy, Frank J. (Author)
Format:	Book
Language:	English
Published:	Amsterdam << [u.a.]>> Elsevier 2007
Edition:	Repr.
Subjects:	Technische Akustik
Online Access:	Inhaltsverzeichnis Inhaltsverzeichnis
Item Description:	Literaturverz. S. [430] - 434
Physical Description:	XIX, 443 S. Ill., graph. Darst.
ISBN:	9780122476655 0122476654

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adam_text	CONTENTS PREFACE .............................................................................. .......................... XIII ACKNOWLEDGEMENTS ......................................................................................... XIX CHAPTER 1 SOUND ENGINEERING 1.1 THE IMPORTANCE OF SOUND ...................................................................... 1.2 ACOUSTICS AND THE ENGINEER .................................................................... 1.3 SOUND THE SERVANT ................................................................................. CHAPTER 2 THE NATURE OF SOUND AND SOME SOUND WAVE PHENOMENA 2.1 INTRODUCTION ........................................................................................ 2.2 WHAT IS SOUND? .................................................................................... 2.3 SOUND AND VIBRATION ............................................................................. 2.4 SOUND IN SOLIDS .................................................................................... 2.5 A QUALITATIVE INTRODUCTION TO WAVE PHENOMENA ....................................... . 2.5.1 WAVEFRONTS .............................................................................. 2.5.2 INTERFERENCE ............................................................................. 2.5.3 REFLECTION ................................................................................ 2.5.4 SCATTERING ................................................................................ 2.5.5 DIFFRACTION ............................................................................... 2.5.6 REFRACTION ............................................................................... 2.5.7 THE DOPPLER EFFECT .................................................................... 2.5.8 CONVECTION .............................................................................. 2.6 SOME MORE COMMON EXAMPLES OF THE BEHAVIOUR OF SOUND WAVES ................ CHAPTER 3 SOUND IN FLUIDS 3.1 INTRODUCTION ........................................................................................ 3.2 THE PHYSICAL CHARACTERISTICS OF FLUIDS ....................................................... 3.3 MOLECULES AND PARTICLES ........................................................................ . 3.4 FLUID PRESSURE ...................................................................................... 3.5 FLUID TEMPERATURE ................................................................................ 3.6 PRESSURE, DENSITY AND TEMPERATURE IN SOUND WAVES IN A GAS ........................ 3.7 PARTICLE MOTION .................................................................................... 3.8 SOUND IN LIQUIDS ................................................................................... 3.9 MATHEMATICAL MODELS OF SOUND WAVES ..................................................... 3.9.1 THE PLANE SOUND WAVE EQUATION .................................................. 3.9.2 SOLUTIONS OF THE PLANE WAVE EQUATION .......................................... 3.9.3 HARMONIC PLANE WAVES: SOUND PRESSURE ....................................... CONTENTS 3.9.4 PLANE WAVES: PARTICLE VELOCITY ..................................................... 3.9.5 THE WAVE EQUATION IN THREE DIMENSIONS ........................................ 3.9.6 PLANE WAVES IN THREE DIMENSIONS ................................................. 3.9.7 THE WAVE EQUATION IN SPHERICAL COORDINATES ................................. 3.9.8 THE SPHERICALLY SYMMETRIC SOUND FIELD ......................................... 3.9.9 PARTICLE VELOCITY IN THE SPHERICALLY SYMMETRIC SOUND FIELD ............... 3.9.10 OTHER FORMS OF SOUND FIELD ......................................................... CHAPTER 4 IMPEDANCE 4.1 INTRODUCTION ........................................................................................ 4.2 SOME SIMPLE EXAMPLES OF THE UTILITY OF IMPEDANCE ..................................... 4.3 MECHANICAL IMPEDANCE .......................................................................... 4.3.1 IMPEDANCE OF LUMPED STRUCTURAL ELEMENTS .................................... 4.4 FORMS OF ACOUSTIC IMPEDANCE ................................................................. 4.4.1 IMPEDANCES OF LUMPED ACOUSTIC ELEMENTS ..................................... 4.4.2 SPECIFIC ACOUSTIC IMPEDANCE OF FLUID IN A TUBE AT LOW FREQUENCY ....... 4.4.3 NORMAL SPECIFIC ACOUSTIC IMPEDANCE ............................................ 4.4.4 RADIATION IMPEDANCE ................................................................ 4.4.5 ACOUSTIC IMPEDANCE .................................................................. 4.4.6 LINE AND SURFACE WAVE IMPEDANCE ............................................... 4.4.7 MODAL RADIATION IMPEDANCE ....................................................... 4.5 AN APPLICATION OF RADIATION IMPEDANCE OF A UNIFORMLY PULSATING SPHERE ...... 4.6 RADIATION EFFICIENCY .............................................................................. CHAPTER 5 SOUND ENERGY AND INTENSITY 5.1 THE PRACTICAL IMPORTANCE OF SOUND ENERGY ............................................... 5.2 SOUND ENERGY ....................................................................................... 5.3 TRANSPORT OF SOUND ENERGY: SOUND INTENSITY ............................................. 5.4 SOUND INTENSITY IN PLANE WAVE FIELDS ........................................................ 5.5 INTENSITY AND MEAN SQUARE PRESSURE ........................................................ 5.6 EXAMPLES OF IDEAL SOUND INTENSITY FIELDS ................................................... 5.6.1 THE POINT MONOPOLE .................................................................. 5.6.2 THE COMPACT DIPOLE ................................................................... 5.6.3 INTERFERING MONOPOLES ............................................................... 5.6.4 INTENSITY DISTRIBUTIONS IN ORTHOGONALLY DIRECTED HARMONIC PLANE WAVE FIELDS ............................................................................... 5.7 SOUND INTENSITY MEASUREMENT ................................................................. 5.8 DETERMINATION OF SOURCE SOUND POWER USING SOUND INTENSITY MEASUREMENT .. 5.9 OTHER APPLICATIONS OF SOUND INTENSITY MEASUREMENT .................................. CHAPTER 6 SOURCES OF SOUND 6.1 INTRODUCTION ........................................................................................ 6.2 QUALITATIVE CATEGORIZATION OF SOURCES ...................................................... 6.2.1 CATEGORY 1 SOURCES .................................................................... 6.2.2 CATEGORY 2 SOURCES .................................................................... 6.2.3 CATEGORY 3 SOURCES .................................................................... 6.3 THE INHOMOGENEOUS WAVE EQUATION ........................................................ 6.3.1 SOUND RADIATION BY FOREIGN BODIES .............................................. 6.3.2 BOUNDARY SOURCES CAN REFLECT OR ABSORB ENERGY ........................... CONTENTS 6.4 IDEAL ELEMENTARY SOURCE MODELS .............................................................. 6.4.1 THE DIRAC DELTA FUNCTION ........................................................... 6.4.2 THE POINT MONOPOLE AND THE PULSATING SPHERE .............................. 6.4.3 ACOUSTIC RECIPROCITY .................................................................. 6.4.4 EXTERNAL FORCES ON A FLUID AND THE COMPACT DIPOLE ......................... 6.4.5 THE OSCILLATING SPHERE ................................................................ 6.4.6 BOUNDARY SOURCES .................................................................... . 6.4.7 FREE-FIELD AND OTHER GREEN S FUNCTIONS ........................................ 6.4.8 THE RAYLEIGH INTEGRALS .............................................................. 6.5 SOUND RADIATION FROM VIBRATING PLANE SURFACES ......................................... 6.6 THE VIBRATING CIRCULAR PISTON AND THE CONE LOUDSPEAKER ............................. 6.7 DIRECTIVITY AND SOUND POWER OF DISTRIBUTED SOURCES .................................. 6.7.1 SOUND POWER OF A SOURCE IN THE PRESENCE OF A SECOND SOURCE ........... 6.8 ZONES OF A SOUND FIELD RADIATED BY A SPATIALLY EXTENDED SOURCE ................... 6.9 EXPERIMENTAL METHODS FOR SOURCE SOUND POWER DETERMINATION ................... 6.10 SOURCE CHARACTERIZATION ......................................................................... CHAPTER 7 SOUND ABSORPTION AND SOUND ABSORBERS 7.1 INTRODUCTION ........................................................................................ 7.2 THE EFFECTS OF VISCOSITY. THERMAL DIFFUSION AND RELAXATION PROCESSES ON SOUND IN GASES ...................................................................................... 7.2.1 THE ORIGIN OF GAS VISCOSITY ......................................................... 7.2.2 THE EFFECTS OF THERMAL DIFFUSION .................................................. 7.2.3 THE EFFECT OF MOLECULAR RELAXATION ............................................. 7.2.4 SOUND ENERGY DISSIPATION AT THE RIGID BOUNDARY OF A GAS ................ 7.2.5 ACOUSTICALLY INDUCED BOUNDARY LAYERS IN A GAS-FILLED TUBE .............. 7.3 FORMS OF POROUS SOUND ABSORBENT MATERIAL ............................................. 7.4 MACROSCOPIC PHYSICAL PROPERTIES OF POROUS SOUND-ABSORBING MATERIALS ....... 7.4.1 POROSITY ................................................................................... 7.4.2 FLOW RESISTANCE AND RESISTIVITY .................................................... 7.4.3 STRUCTURE FACTOR ........................................................................ 7.5 THE MODIFIED EQUATION FOR PLANE WAVE SOUND PROPAGATION IN GASES CONTAINED WITHIN RIGID POROUS MATERIALS .................................................. 7.5.1 EQUATION OF MASS CONSERVATION ................................................... 7.5.2 MOMENTUM EQUATION ................................................................ 7.5.3 THE MODIFIED PLANE WAVE EQUATION .............................................. 7.5.4 HARMONIC SOLUTION OF THE MODIFIED PLANE WAVE EQUATION ............... 7.6 SOUND ABSORPTION BY A PLANE SURFACE OF UNIFORM IMPEDANCE ...................... 7.6.1 THE LOCAL REACTION MODEL ........................................................... 7.6.2 SOUND POWER ABSORPTION COEFFICIENT OF A LOCALLY REACTIVE SURFACE ..... 7.6.3 WAVE IMPEDANCE ...................................................................... 7.7 SOUND ABSORPTION BY THIN POROUS SHEETS .................................................. 7.7.1 THE IMMOBILE SHEET IN FREE FIELD .................................................. 7.7.2 THE LIMP SHEET IN FREE FIELD ......................................................... 7.7.3 THE EFFECT OF A RIGID WALL PARALLEL TO A THIN SHEET ............................ 7.8 SOUND ABSORPTION BY THICK SHEETS OF RIGID POROUS MATERIAL ........................ 7.8.1 THE INFINITELY THICK SHEET .......................................................... 7.8.2 THE SHEET OF FINITE THICKNESS ....................................................... VIII CONTENTS 7.8.3 THE EFFECT OF A BACKING CAVITY ON THE SOUND ABSORPTION OF A SHEET OF POROUS MATERIAL ........................................................................ 7.9 SOUND ABSORPTION BY FLEXIBLE CELLULAR AND FIBROUS MATERIALS ........................ 7.10 THE EFFECT OF PERFORATED COVER SHEETS ON SOUND ABSORPTION BY POROUS MATERIALS ............................................................................................. 7.11 NON-POROUS SOUND ABSORBERS ................................................................. 7.1 1.1 HELMHOLTZ RESONATORS ................................................................ 7.1 1.2 PANEL ABSORBERS ........................................................................ 7.12 METHODS OF MEASUREMENT OF BOUNDARY IMPEDANCE AND ABSORPTION COEFFICIENT ............................................................................................ 7.12.1 THE IMPEDANCE TUBE .................................................................. 7.12.2 REVERBERATION ROOM METHOD ...................................................... CHAPTER 8 SOUND IN WAVEGUIDES 8.1 INTRODUCTION ........................................................................................ 8.2 PLANE WAVE PULSES IN A UNIFORM TUBE ........................................................ 8.3 PLANE WAVE MODES AND NATURAL FREQUENCIES OF FLUID IN UNIFORM WAVEGUIDES ... 8.3.1 CONSERVATIVE TERMINATIONS ......................................................... 8.3.2 NON-CONSERVATIVE TERMINATIONS ................................................... 8.4 RESPONSE TO HARMONIC EXCITATION ............................................................ 8.4.1 IMPEDANCE MODEL ...................................................................... 8.4.2 HARMONIC RESPONSE IN TERMS OF GREEN S FUNCTIONS ......................... 8.5 A SIMPLE CASE OF STRUCTURE-FLUID INTERACTION .............................................. 8.6 PLANE WAVES IN DUCTS THAT INCORPORATE IMPEDANCE DISCONTINUITIES ................ 8.6.1 INSERTION LOSS AND TRANSMISSION LOSS ............................................. 8.6.2 TRANSMISSION OF PLANE WAVES THROUGH AN ABRUPT CHANGE OF CROSS- SECTIONAL AREA AND AN EXPANSION CHAMBER ..................................... 8.6.3 SERIES NETWORKS OF ACOUSTIC TRANSMISSION LINES .............................. 8.6.4 SIDE BRANCH CONNECTIONS TO UNIFORM ACOUSTIC WAVEGUIDES .............. . 8.6.5 THE SIDE BRANCH TUBE ................................................................. 8.6.6 THE SIDE BRANCH ORIFICE ............................................................... 8.6.7 THE HELMHOLTZ RESONATOR SIDE BRANCH .......................................... 8.6.8 BENDS IN OTHERWISE STRAIGHT UNIFORM WAVEGUIDES ........................... 8.7 TRANSVERSE MODES OF UNIFORM ACOUSTIC WAVEGUIDES ................................... 8.7.1 THE UNIFORM TWO-DIMENSIONAL WAVEGUIDE WITH RIGID WALLS .............. 8.7.2 THE UNIFORM TWO-DIMENSIONAL WAVEGUIDE WITH FINITE IMPEDANCE BOUNDARIES ............................................................................... 8.7.3 THE UNIFORM WAVEGUIDE OF RECTANGULAR CROSS-SECTION WITH RIGID WALLS ........................................................................................ 8.7.4 THE UNIFORM WAVEGUIDE OF CIRCULAR CROSS-SECTION WITH RIGID WALLS .... 8.8 HARMONIC EXCITATION OF WAVEGUIDE MODES ................................................ 8.9 ENERGY FLUX IN A WAVEGUIDE OF RECTANGULAR CROSS-SECTION WITH RIGID WALLS ...... 8.10 EXAMPLES OF THE SOUND ATTENUATION CHARACTERISTICS OF LINED DUCTS AND SPLITTER ATTENUATORS ................................................................................ 8.1 1 ACOUSTIC HORNS ..................................................................................... 8.1 1.1 APPLICATIONS ............................................................................. 8.11.2 THE HORN EQUATION .................................................................... CONTENTS CHAPTER 9 SOUND IN ENCLOSURES 9.1 INTRODUCTION ........................................................................................ 9.2 SOME GENERAL FEATURES OF SOUND FIELDS IN ENCLOSURES ................................... 9.3 APOLOGY FOR THE RECTANGULAR ENCLOSURE .................................................... 9.4 THE IMPULSE RESPONSE OF FLUID IN A REVERBERANT RECTANGULAR ENCLOSURE .......... 9.5 ACOUSTIC NATURAL FREQUENCIES AND MODES OF FLUID IN A RIGID-WALLED RECTANGULAR ENCLOSURE ............................................................................ 9.6 MODAL ENERGY ...................................................................................... 9.7 THE EFFECTS OF FINITE WALL IMPEDANCE ON MODAL ENERGY-TIME DEPENDENCE IN FREE VIBRATION ....................................................................................... 9.8 THE RESPONSE OF FLUID IN A RECTANGULAR ENCLOSURE TO HARMONIC EXCITATION BY A POINT MONOPOLE SOURCE ....................................................................... 9.9 THE SOUND POWER OF A POINT MONOPOLE IN A REVERBERANT ENCLOSURE .............. 9.10 SOUND RADIATION INTO AN ENCLOSURE BY THE VIBRATION OF A BOUNDARY ............. 9.11 PROBABILISTIC WAVE FIELD MODELS FOR ENCLOSED SOUND FIELDS AT HIGH FREQUENCY . 9.11.1 THE MODAL OVERLAP FACTOR AND RESPONSE UNCERTAINTY ...................... 9.1 1.2 HIGH-FREQUENCY SOUND FIELD STATISTICS ........................................... 9.11.3 THE DIFFUSE FIELD MODEL .............................................................. 9.12 APPLICATIONS OF THE DIFFUSE FIELD MODEL .................................................... 9.12.1 STEADY STATE DIFFUSE FIELD ENERGY, INTENSITY AND ENCLOSURE ABSORPTION 9.12.2 REVERBERATION TIME ................................................................... 9.12.3 STEADY STATE SOURCE SOUND POWER AND REVERBERANT FIELD ENERGY ........ 9.13 A BRIEF INTRODUCTION TO GEOMETRIC (RAY) ACOUSTICS ...................................... CHAPTER 10 STRUCTURE-BORNE SOUND 10.1 THE NATURE AND PRACTICAL IMPORTANCE OF STRUCTURE-BORNE SOUND .................. 10.2 EMPHASIS AND CONTENT OF THE CHAPTER ...................................................... 10.3 THE ENERGY APPROACH TO MODELLING STRUCTURE-BORNE SOUND ......................... 10.4 QUASI-LONGITUDINAL WAVES IN UNIFORM RODS AND PLATES ................................ 10.5 THE BENDING WAVE IN UNIFORM HOMOGENEOUS BEAMS .................................. 10.5.1 A REVIEW OF THE ROLES OF DIRECT AND SHEAR STRESSES ........................... 10.5.2 SHEAR FORCE AND BENDING MOMENT ............................................... 10.5.3 THE BEAM BENDING WAVE EQUATION ............................................... 10.5.4 HARMONIC SOLUTIONS OF THE BENDING WAVE EQUATION ........................ 10.6 THE BENDING WAVE IN THIN UNIFORM HOMOGENEOUS PLATES ............................ 10.7 TRANSVERSE PLANE WAVES IN FLAT PLATES ....................................................... 10.8 DISPERSION CURVES, WAVENUMBER VECTOR DIAGRAMS AND MODAL DENSITY .......... 10.9 STRUCTURE-BORNE WAVE ENERGY AND ENERGY FLUX .......................................... . 10.9.1 QUASI-LONGITUDINAL WAVES .......................................................... 10.9.2 BENDING WAVES IN BEAMS ............................................................ 10.9.3 BENDING WAVES IN PLATES ............................................................. . ........... 10.10 MECHANICAL IMPEDANCES OF INFINITE. UNIFORM RODS BEAMS AND PLATES 10.10.1 IMPEDANCE OF QUASI-LONGITUDINAL WAVES IN RODS ............................ 10.10.2 IMPEDANCES OF BEAMS IN BENDING ................................................ 10.10.3 IMPEDANCES OF THIN. UNIFORM, FLAT PLATES IN BENDING ....................... 10.10.4 IMPEDANCE AND MODAL DENSITY .................................................... 10.11 WAVE ENERGY TRANSMISSION THROUGH JUNCTIONS BETWEEN STRUCTURAL COMPONENTS ......................................................................................... X CONTENTS 10.12 IMPEDANCE. MOBILITY AND VIBRATION ISOLATION ............................................ 10.13 STRUCTURE-BORNE SOUND GENERATED BY IMPACT ............................................. 10.14 SOUND RADIATION BY VIBRATING FLAT PLATES .................................................. . 10.14.1 THE CRITICAL FREQUENCY AND RADIATION CANCELLATION .......................... 10.14.2 ANALYSIS OF MODAL RADIATION ....................................................... 10.14.3 PHYSICAL INTERPRETATIONS AND PRACTICAL IMPLICATIONS ........................ CHAPTER 11 TRANSMISSION OF SOUND THROUGH PARTITIONS 1 1 . 1 PRACTICAL ASPECTS OF SOUND TRANSMISSION THROUGH PARTITIONS ........................ 11.2 TRANSMISSION OF NORMALLY INCIDENT PLANE WAVES THROUGH AN UNBOUNDED PARTITION .............................................................................................. 11.3 TRANSMISSION OF SOUND THROUGH AN UNBOUNDED FLEXIBLE PARTITION ................ I 1.4 TRANSMISSION OF DIFFUSE SOUND THROUGH A BOUNDED PARTITION IN A BAFFLE ........ 1 1.5 DOUBLE-LEAF PARTITIONS ........................................................................... 11.6 TRANSMISSION OF NORMALLY INCIDENT PLANE WAVES THROUGH AN UNBOUNDED DOUBLE-LEAF PARTITION ............................................................................. 11.7 THE EFFECT OF CAVITY ABSORPTION ............................................................... 11.8 TRANSMISSION OF OBLIQUELY INCIDENT PLANE WAVES THROUGH AN UNBOUNDED DOUBLE-LEAF PARTITION ............................................................................. 1 1.9 CLOSE-FITTING ENCLOSURES ......................................................................... 11 . 10 A SIMPLE MODEL OF A NOISE CONTROL ENCLOSURE ............................................ 11.11 MEASUREMENT OF SOUND REDUCTION INDEX (TRANSMISSION LOSS) ........................ CHAPTER 12 REFLECTION. SCATTERING. DIFFRACTION AND REFRACTION 12.1 INTRODUCTION ........................................................................................ 12.2 SCATTERING BY A DISCRETE BODY .................................................................. 12.3 SCATTERING BY CROWDS OF RIGID BODIES ........................................................ 12.4 RESONANT SCATTERING .............................................................................. 12.4.1 DISCRETE SCATTERERS ..................................................................... 12.4.2 DIFFUSORS .................................................................................. 12.5 DIFFRACTION ........................................................................................... 12.5.1 DIFFRACTION BY PLANE SCREENS ....................................................... 12.5.2 DIFFRACTION BY APERTURES IN PARTITIONS .......................................... 12.6 REFLECTION BY THIN. PLANE RIGID SHEETS ....................................................... 12.7 REFRACTION ........................................................................................... 12.7.1 REFRACTED RAY PATH THROUGH A UNIFORM. WEAK SOUND SPEED GRADIENT . 12.7.2 REFRACTION OF SOUND IN THE ATMOSPHERE ........................................ APPENDIX 1 COMPLEX EXPONENTIAL REPRESENTATION OF HARMONIC FUNCTIONS A1.1 HARMONIC FUNCTIONS OF TIME .................................................................. A1.2 HARMONIC FUNCTIONS OF SPACE .................................................................. A L . 3 CER OF TRAVELLING HARMONIC PLANE WAVES ................................................. A 1.4 OPERATIONS ON HARMONICALLY VARYING QUANTITIES REPRESENTED BY CER ........... APPENDIX 2 FREQUENCY ANALYSIS A2.1 INTRODUCTION ........................................................................................ A2.2 CATEGORIES OF SIGNAL .............................................................................. A2.3 FOURIER ANALYSIS OF SIGNALS ..................................................................... A2.3.1 THE FOURIER INTEGRAL TRANSFORM ................................................... A2.3.2 FOURIER SERIES ANALYSIS ............................................................... CONTENTS XI A2.3.3 PRACTICAL FOURIER ANALYSIS .......................................................... 388 A2.3.4 FREQUENCY ANALYSIS BY FILTERS ...................................................... 390 A2.4 PRESENTATION OF THE RESULTS OF FREQUENCY ANALYSIS ....................................... 392 A2.5 FREQUENCY RESPONSE FUNCTIONS .............................................................. 392 A2.6 IMPULSE RESPONSE ................................................................................ 393 APPENDIX 3 SPATIAL FOURIER ANALYSIS OF SPACE-DEPENDENT VARIABLES 394 A3.1 WAVENUMBER TRANSFORM ........................................................................ 394 A3.2 WAVE DISPERSION ................................................................................... 394 APPENDIX 4 COHERENCE AND CROSS-CORRELATION 397 A4.1 BACKGROUND ........................................................................................ 397 A4.2 CORRELATION ...................................................................................... 397 A4.3 COHERENCE ..................................................................................... 398 A4.4 THE RELATION BETWEEN THE CROSS-CORRELATION AND COHERENCE FUNCTIONS ........... 399 APPENDIX 5 THE SIMPLE OSCILLATOR 401 A5.1 FREE VIBRATION OF THE UNDAMPED MASS-SPRING OSCILLATOR ............................ 401 A5.2 IMPULSE RESPONSE OF THE UNDAMPED OSCILLATOR ........................................... 401 A5.3 THE VISCOUSLY DAMPED OSCILLATOR ............................................................. 402 A5.4 IMPULSE RESPONSE OF THE VISCOUSLY DAMPED OSCILLATOR ................................. 403 A5.5 RESPONSE OF A VISCOUSLY DAMPED OSCILLATOR TO HARMONIC EXCITATION ............. 403 APPENDIX 6 MEASURES OF SOUND. FREQUENCY WEIGHTING AND NOISE RATING INDICATORS 406 -46.1 INTRODUCTION ........................................................................................ 406 A6.2 PRESSURE-TIME HISTORY ........................................................................ 406 A6.3 MEAN SQUARE PRESSURE ........................................................................... 407 A6.4 SOUND PRESSURE LEVEL ........................................................................... 408 A6.5 SOUND INTENSITY LEVEL ........................................................................... 408 A6.6 SOUND POWER LEVEL ............................................................................... 408 A6.7 STANDARD REFERENCE CURVES ...................................................................... 409 APPENDIX 7 DEMONSTRATIONS AND EXPERIMENTS A7.1 INTRODUCTION ........................................................................................ A7.2 DEMONSTRATIONS ................................................................................... A7.2.1 NOISE SOURCES ........................................................................... A7.2.2 SOUND INTENSITY AND SURFACE ACOUSTIC IMPEDANCE ........................... A7.2.3 ROOM ACOUSTICS ........................................................................ A7.2.4 MISCELLANEOUS .......................................................................... A7.3 FORMAL LABORATORY CLASS EXPERIMENTS ...................................................... A7.3.1 CONSTRUCT A CALIBRATED VOLUME VELOCITY SOURCE (CVVS) .................. A7.3.2 SOURCE SOUND POWER DETERMINATION USING INTENSITY SCANS. REVERBERATION TIME MEASUREMENTS AND POWER BALANCE .................... A7.3.3 INVESTIGATION OF SMALL ROOM ACOUSTIC RESPONSE .............................. A7.3.4 DETERMINATION OF COMPLEX WAVENUMBERS OF POROUS MATERIALS ........ A7.3.5 MEASUREMENT OF THE SPECIFIC ACOUSTIC IMPEDANCE OF A SHEET OF POROUS MATERIAL ........................................................................ A7.3.6 MEASUREMENT OF THE IMPEDANCE OF SIDE BRANCH AND IN-LINE REACTIVE ATTENUATORS .............................................................................. XII CONTENTS A7.3.7 SOUND PRESSURE GENERATION BY A MONOPOLE IN FREE SPACE AND IN A TUBE ......................................................................................... 419 A7.3.8 MODE DISPERSION IN A DUCT .......................................................... 419 A7.3.9 SCATTERING BY A ROUGH SURFACE ..................................................... 419 A7.3.10 RADIATION BY A VIBRATING PLATE .................................................... 420 ANSWERS ........................................................................................................ 421 BIBLIOGRAPHY ................................................................................................. 430 REFERENCES .................................................................................................... 432 INDEX ............................................................................................................ 435
any_adam_object	1
author	Fahy, Frank J.
author_facet	Fahy, Frank J.
author_role	aut
author_sort	Fahy, Frank J.
author_variant	f j f fj fjf
building	Verbundindex
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classification_rvk	UF 6900
ctrlnum	(OCoLC)315476642 (DE-599)BSZ277866553
discipline	Physik
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id	DE-604.BV024620739
illustrated	Illustrated
indexdate	2024-07-09T22:03:12Z
institution	BVB
isbn	9780122476655 0122476654
language	English
oai_aleph_id	oai:aleph.bib-bvb.de:BVB01-018592727
oclc_num	315476642
open_access_boolean
owner	DE-83 DE-573 DE-Aug4
owner_facet	DE-83 DE-573 DE-Aug4
physical	XIX, 443 S. Ill., graph. Darst.
publishDate	2007
publishDateSearch	2007
publishDateSort	2007
publisher	Elsevier
record_format	marc
spelling	Fahy, Frank J. Verfasser aut Foundations of engineering acoustics Frank Fahy Repr. Amsterdam << [u.a.]>> Elsevier 2007 XIX, 443 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Literaturverz. S. [430] - 434 Technische Akustik (DE-588)4059219-4 gnd rswk-swf Technische Akustik (DE-588)4059219-4 s DE-604 http://www3.ub.tu-berlin.de/ihv/001766233.pdf Inhaltsverzeichnis SWBplus Fremddatenuebernahme application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=018592727&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis
spellingShingle	Fahy, Frank J. Foundations of engineering acoustics Technische Akustik (DE-588)4059219-4 gnd
subject_GND	(DE-588)4059219-4
title	Foundations of engineering acoustics
title_auth	Foundations of engineering acoustics
title_exact_search	Foundations of engineering acoustics
title_full	Foundations of engineering acoustics Frank Fahy
title_fullStr	Foundations of engineering acoustics Frank Fahy
title_full_unstemmed	Foundations of engineering acoustics Frank Fahy
title_short	Foundations of engineering acoustics
title_sort	foundations of engineering acoustics
topic	Technische Akustik (DE-588)4059219-4 gnd
topic_facet	Technische Akustik
url	http://www3.ub.tu-berlin.de/ihv/001766233.pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=018592727&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA
work_keys_str_mv	AT fahyfrankj foundationsofengineeringacoustics

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