| Description |
1 online resource |
| Series |
Mechanical Engineering Series |
|
Mechanical engineering series (Berlin, Germany)
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| Contents |
Intro -- Preface -- Contents -- Nomenclature -- 1 Analysis of Acoustic Signals -- 1.1 Some Basics-Measures of Sound -- 1.2 One-Third Octave Band Levels -- 1.3 A-Weighted Sound Levels -- 1.4 Narrowband Signal Analysis -- 1.5 Power Spectral Density by the Finite Fourier Transform -- 1.6 Spectral Analysis of Measured Time Series -- 1.7 Sound Level Calculations from Narrowband Power Spectra -- 1.8 The ̀̀Slow'' Fourier Transform: Least Squares Extraction of a Harmonic Signal -- 1.9 Frequency Response of Linear Systems with Random Input -- 1.10 Input-Output Relationships for a Linear System |
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1.11 Spectral Approach to Evaluating the Convolution Integral -- 1.12 Example: FFT for Response of a Spring/Mass/Damper -- 1.13 Example: Numerical Differentiation and Integration Using the FFT -- 1.14 FFT and iFFT to Estimate the Fourier Transform for Complex Functions -- 1.15 Problems -- 2 One Dimensional Sound Fields -- 2.1 Newton's Second Law -- 2.2 Conservation of Mass -- 2.3 Equation of State -- 2.4 Solutions for Some Simple Fields -- 2.5 Sound Intensity and the Sound Absorption Coefficient -- 2.6 d'Alembert's Solution -- 2.7 Sound in an Infinite Tube -- 2.8 Problems |
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3 Sound Transmission Loss -- 3.1 The Mass Law -- 3.2 Random Incidence Sound Transmission Loss -- 3.3 Transmission Loss Calculations Using Transfer Matrices -- 3.4 Transfer Matrix for a Solid Element -- 3.5 Transfer Matrix for an Air Gap -- 3.6 Air Gap with Non-normal Incident Sound -- 3.7 Double Walls -- 3.7.1 Simple Air Gap -- 3.7.2 Low Frequencies -- 3.7.3 Slightly Higher Frequencies-Double Wall Resonance -- 3.7.4 Very High Frequencies -- 3.8 Analysis of Double Walls with Mechanical Coupling -- 3.9 Problems -- References for Chapter 3 -- 4 Analysis of Mufflers and Ducts |
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4.1 The Junction of Two Pipes -- 4.2 The Expansion Muffler -- 4.3 The Helmholtz Resonator -- 4.4 Side Branches -- 4.5 General Side Branch -- 4.6 Simple Pipe Side Branch -- 4.7 Sound in Tubes of Varying Cross-Sectional Area -- 4.7.1 Conical Horn -- 4.7.2 Assemble Conical Elements to Model a Tube with Arbitrary Cross-Sectional Area -- 4.7.3 Solving for the Pressure and Velocity Within the Domain -- 4.7.4 The Exponential Horn -- 4.7.5 Numerical Example for a Non-uniform Duct -- 4.8 Problems -- Reference for Chapter 4 -- 5 Sound Radiation in Three Dimensions -- 5.1 Wave Equation in Three Dimensions |
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5.2 Sound Intensity of Spherical Waves -- 5.3 Sound Radiation by a Simple Source -- 5.4 Sound Field Inside a Pulsating Sphere -- 5.5 Simple Model of Sound Radiation from a Loudspeaker -- 5.6 The Image Source -- 5.6.1 Periodic Frequency Response Due to Reflections -- 5.7 The Acoustic Dipole -- 5.8 The Line Source -- 5.9 Surface Source -- 5.10 Sound Radiation from a Piston in a Baffle -- 5.11 Single Piston -- 5.12 Piston Vibration -- 5.13 Multiple Piston Radiators -- 5.14 Analysis and Design of Loudspeakers in Vented Boxes -- 5.14.1 Loudspeaker Diaphragm in a Closed Box |
| Summary |
This updated edition adds new material on the acoustics of mufflers and ducts, including a new analysis on sound propagation in a duct having a cross sectional area that varies in the direction of the duct length. The textbook retains its class-tested fundamentals of engineering acoustics and examination of in-depth concepts within the domains that apply to reducing noise, measuring noise, and designing microphones and loudspeakers. The book particularly emphasizes the physical principles used in designing miniature microphones. These devices are used in billions of electronic products, most visibly, cell phones and hearing aids, and enable countless other applications. Distinct from earlier books on this topic that take the view of the electrical engineer analyzing mechanical systems using electric circuit analogies. This text uses Newtonian mechanics as a more appropriate paradigm for analyzing these mechanical systems and in so doing provides a more direct method of modeling. Written at a level appropriate for upper-division undergraduate and graduate courses, and enhanced with end-of-chapter problems and MatLab routines, the book is ideal as a core text for students interested in engineering acoustics in ME, EE, and physics programs, as well as a reference for engineers and technicians working in the huge global industry of miniature microphone design. Maximizes reader understanding of methods for analyzing and designing acoustic sensors such as microphones; Introduces methods of analyzing sound in ducts and mufflers, techniques very important for noise control; Reinforces concepts presented with example designs, homework problems, and MatLab programs |
| Bibliography |
Includes bibliographical references and index |
| Notes |
Online resource; title from PDF title page (SpringerLink, viewed October 12, 2023) |
| Subject |
Acoustical engineering.
|
|
Acoustical engineering
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| Form |
Electronic book
|
| ISBN |
9783031330094 |
|
3031330099 |
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