| Edition |
Second edition. |
| Description |
1 online resource |
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text txt rdacontent |
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computer c rdamedia |
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online resource cr rdacarrier |
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text file |
| Note |
Includes index. |
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Online resource; title from PDF title page (Ebsco, viewed May 29, 2019). |
| Summary |
Acoustics: Sound Fields, Transducers and Vibration, Second Edition guides readers through the basics of sound fields, the laws governing sound generation, radiation, and propagation, and general terminology. Specific sections cover microphones (electromagnetic, electrostatic, and ribbon), earphones, and horns, loudspeaker enclosures, baffles and transmission lines, miniature applications (e.g. MEMS microphones and micro speakers in tablets and smart phones), sound in enclosures of all sizes, such as school rooms, offices, auditoriums and living rooms, and fluid-structure interaction. Numerical examples and summary charts are given throughout the text to make the material easily applicable to practical design. New to this edition: A chapter on electrostatic loudspeakers A chapter on vibrating surfaces (membranes, plates, and shells) Readers will find this to be a valuable resource for experimenters, acoustical consultants, and to those who anticipate being engineering designers of audio equipment. It will serve as both a text for students in engineering departments and as a valuable reference for practicing engineers. |
| Bibliography |
Includes bibliographical references and index. |
| Note |
Copyright ©: Elsevier Science & Technology 2019 |
| Contents |
VI: MECHANICAL CIRCUITS -- 3.1 INTRODUCTION -- 3.2 PHYSICAL AND MATHEMATICAL MEANINGS OF CIRCUIT ELEMENTS -- 3.3 MECHANICAL ELEMENTS -- Mechanical impedance ZM and mechanical admittance YM -- Mass MM -- Mechanical compliance CM -- Mechanical resistance RM and mechanical conductance GM -- Mechanical generators -- Levers -- Simple lever -- Floating lever -- VII: ACOUSTICAL CIRCUITS -- 3.4 ACOUSTICAL ELEMENTS -- Acoustic mass MA -- Acoustic compliance CA -- Acoustic resistance RA and acoustic conductance GA -- Acoustic generators -- Mechanical rotational systems -- VIII: TRANSDUCERS -- 3.5 ELECTROMECHANICAL TRANSDUCERS -- Electromagnetic-mechanical transducer -- Electrostatic-mechanical transducer -- 3.6 MECHANOACOUSTIC TRANSDUCER -- 3.7 EXAMPLES OF TRANSDUCER CALCULATIONS -- IX: CIRCUIT THEOREMS, ENERGY, AND POWER -- 3.8 CONVERSION FROM ADMITTANCE-TYPE ANALOGIES TO IMPEDANCE-TYPE ANALOGIES -- 3.9 THÉVENIN'S THEOREM -- 3.10 TRANSDUCER IMPEDANCES -- Transmission matrix for an electrical two-port network -- Transmission matrix for an electromagnetic-mechanical transducer -- Impedance matrix for an electromagnetic-mechanical transducer -- Transmission matrix for an electrostatic-mechanical transducer -- Impedance matrix for an electrostatic-mechanical transducer -- Analogous circuits for the two-port network using z-parameters [12] -- NOTES -- Four -- Acoustic components -- 4.1 INTRODUCTION -- X: ACOUSTIC ELEMENTS -- 4.2 ACOUSTIC MASS (INERTANCE) -- Tube of medium diameter -- 4.3 ACOUSTIC COMPLIANCES -- Limitations on an acoustic compliance -- Series acoustic compliance -- 4.4 ACOUSTIC RESISTANCES -- Tube of small diameter [0.005< -- l< -- radius a (in meters)< -- 0.002/f] [1] -- Narrow slit [2] [t (in meters)< -- 0.003/f] -- 4.5 CAVITY WITH HOLES ON OPPOSITE SIDES-MIXED MASS-COMPLIANCE ELEMENT. |
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4.6 INTERMEDIATE-SIZED DUCTS-MIXED MASS-RESISTANCE ELEMENTS -- Medium tube [a (in meters) 0.01/f and a < -- 10/f] [3,4] -- Medium slit [t (in meters) 0.02/f and t< -- 20/f] [5] -- 4.7 PERFORATED SHEET-MIXED MASS-RESISTANCE ELEMENT [A (IN METERS) 0.01/F AND A< -- 10/F] [3,4] -- Definition of Q -- 4.8 ACOUSTIC TRANSFORMERS -- Junction of two pipes of different areas -- Two pipes of different areas joined by an exponential connector [6] -- XI: ELEMENTARY REFLECTION AND RADIATION OF SOUND -- 4.9 REFLECTION OF A PLANE WAVE FROM A PLANE -- 4.10 RADIATION FROM A PULSATING SPHERE -- Radiation impedance -- 4.11 RADIATION FROM A MONOPOLE POINT SOURCE (SIMPLE SOURCE) -- Pressure and particle velocity -- Strength of a point source [6] -- Intensity at distance r -- 4.12 COMBINATION OF POINT SOURCES -- Two point sources -- Linear array of point sources -- 4.13 STEERED BEAM-FORMING ARRAY OF POINT SOURCES -- 4.14 DIPOLE POINT SOURCE (DOUBLET) -- Near-field and far-field -- 4.15 RADIATION FROM AN OSCILLATING SPHERE -- Near-field pressure -- Far-field pressure -- Radiation impedance -- XII: DIRECTIVITY INDEX -- 4.16 DIRECTIVITY INDEX AND DIRECTIVITY FACTOR -- Directivity factor [Q(f)] -- Directivity index [DI(f)] -- Calculation of Q(f) and DI(f) -- XIII: RADIATION IMPEDANCES -- 4.17 PULSATING SPHERE -- 4.18 OSCILLATING SPHERE -- 4.19 PLANE CIRCULAR PISTON IN INFINITE BAFFLE -- Approximate analogous circuits -- Low- and high-frequency approximations -- 4.20 PLANE CIRCULAR FREE DISK -- 4.21 PLANE CIRCULAR PISTON RADIATING FROM ONE SIDE ONLY IN FREE SPACE -- XIV: VISCOUS AND THERMAL LOSSES -- 4.22 SOUND IN LOSSY TUBES -- 4.23 WAVE EQUATION FOR AN INFINITE LOSSY TUBE -- Assumptions -- Categories -- The momentum conservation equation -- Thermal conduction (entropy) and the gas law -- Solution of the velocity and temperature radial equations. |
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Mass conservation and Helmholtz wave equation -- Dynamic density -- Dynamic compressibility -- Wave number and characteristic impedance -- 4.24 FINITE LOSSY TUBES -- A two-port network for a finite tube of any length [13] -- A two-port network for a short finite tube -- A two-port network for a short finite tube using approximate discrete elements -- Regimes for an open-ended tube -- Ultra-narrow tube -- REFERENCES -- Five -- Microphones -- XV: GENERAL CHARACTERISTICS OF MICROPHONES -- 5.1 PRESSURE MICROPHONES -- 5.2 PRESSURE-GRADIENT MICROPHONES -- 5.3 COMBINATION OF PRESSURE AND PRESSURE-GRADIENT MICROPHONES -- XVI: PRESSURE MICROPHONES -- 5.4 ELECTROMAGNETIC MOVING-COIL MICROPHONE (DYNAMIC MICROPHONE) -- General features -- Construction -- Electro-mechano-acoustical relations -- Performance -- 5.5 ELECTROSTATIC MICROPHONE (CAPACITOR MICROPHONE) -- General features -- Construction -- Electromechanical relations -- Analogous circuits -- Acoustical relations -- Performance -- XVII: PRESSURE-GRADIENT MICROPHONES -- 5.6 ELECTROMAGNETIC RIBBON MICROPHONES -- General features -- Construction -- Analogous circuit -- Performance -- XVIII: COMBINATION MICROPHONES -- 5.7 ELECTRICAL COMBINATION OF PRESSURE AND PRESSURE-GRADIENT TRANSDUCERS -- 5.8 ACOUSTICAL COMBINATION OF PRESSURE AND PRESSURE-GRADIENT MICROPHONES -- 5.9 DUAL-DIAPHRAGM COMBINATION OF PRESSURE AND PRESSURE-GRADIENT MICROPHONES -- Omnidirectional performance -- Bidirectional performance -- Unidirectional performance -- Condition for equal sensitivity in all three switch positions -- Condition for stability -- NOTES -- Six -- Electrodynamic loudspeakers -- XIX: BASIC THEORY OF ELECTRODYNAMIC LOUDSPEAKERS -- 6.1 INTRODUCTION -- 6.2 CONSTRUCTION [2] -- 6.3 ELECTRO-MECHANO-ACOUSTICAL CIRCUIT -- Voice-coil velocity at medium and low frequencies -- Voice-coil velocity at low frequencies. |
| Subject |
Electro-acoustics.
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Sound -- Recording and reproducing.
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Électroacoustique.
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Son -- Enregistrement et reproduction.
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TECHNOLOGY & ENGINEERING -- Engineering (General)
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TECHNOLOGY & ENGINEERING -- Reference.
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Electro-acoustics
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Sound -- Recording and reproducing
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So -- Enregistrament i reproducció.
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Electroacústica.
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| Added Author |
Mellow, Tim J., author.
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| Other Form: |
Print version : 9780128152270 |
| ISBN |
9780128152287 (electronic bk.) |
|
0128152281 (electronic bk.) |
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9780128152270 (electronic bk.) |
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0128152273 (electronic bk.) |
| Standard No. |
C20170016300 |
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9780128152287 |
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AU@ 000065403626 |
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AU@ 000066135411 |
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AU@ 000066230065 |
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AU@ 000067099990 |
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UKMGB 019419235 |
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AU@ 000076513173 |
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