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1. |
Record Nr. |
UNISA990005652290203316 |
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Autore |
RUSSELL, Bertrand |
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Titolo |
Storia della filosofia occidentale e dei suoi rapporti con le vicende politiche e sociali dall'antichità ad oggi / di Bertrand Russell ; traduzione di Luca Pavolini |
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Pubbl/distr/stampa |
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Edizione |
[Milano : Longanesi] |
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Descrizione fisica |
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Trad. di: History of Western philosophy and its connection with political and social circumstances from the earliest times to the present. |
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Disciplina |
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Lingua di pubblicazione |
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Formato |
Grafica |
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Livello bibliografico |
Monografia |
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2. |
Record Nr. |
UNINA9910465638803321 |
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Autore |
Jacobsen Finn |
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Titolo |
Fundamentals of general linear acoustics [[electronic resource] /] / Finn Jacobsen, Peter Moller Juhl |
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Pubbl/distr/stampa |
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Chichester, West Sussex, : John Wiley & Sons Inc., 2013 |
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ISBN |
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1-118-63617-1 |
1-118-63616-3 |
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Descrizione fisica |
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1 online resource (302 p.) |
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Altri autori (Persone) |
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Disciplina |
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Soggetti |
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Sound-waves - Transmission |
Wave-motion, Theory of |
Electronic books. |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Cover; Title Page; Copyright; Contents; About the Authors; Preface; List of Symbols; Chapter 1 Introduction; Chapter 2 Fundamentals of Acoustic Wave Motion; 2.1 Fundamental Acoustic Concepts; 2.2 The Wave Equation; References; Chapter 3 Simple Sound Fields; 3.1 Plane Waves; 3.2 Sound Transmission Between Fluids; 3.3 Simple Spherical Waves; References; Chapter 4 Basic Acoustic Measurements; 4.1 Introduction; 4.2 Frequency Analysis; 4.3 Levels and Decibels; 4.4 Noise Measurement Techniques and Instrumentation; References; Chapter 5 The Concept of Impedance; 5.1 Mechanical Impedance |
5.2 Acoustic Impedance5.3 Specific Impedance, Wave Impedance and Characteristic Impedance; References; Chapter 6 Sound Energy, Sound Power, Sound Intensity and Sound Absorption; 6.1 Introduction; 6.2 Conservation of Sound Energy; 6.3 Active and Reactive Intensity; 6.4 Measurement of Sound Intensity; 6.4.1 Errors Due to the Finite Difference Approximation; 6.4.2 Errors Due to Scattering; 6.4.3 Errors Due to Phase Mismatch; 6.5 Applications of Sound Intensity; 6.5.1 Sound Power Determination; 6.5.2 Noise Source Identification and Visualisation of Sound Fields |
6.5.3 Transmission Loss of Structures and Partitions6.5.4 Measurement of the Emission Sound Pressure Level; 6.6 Sound Absorption; References; Chapter 7 Duct Acoustics; 7.1 Introduction; 7.2 Plane Waves in Ducts with Rigid Walls; 7.2.1 The Sound Field in a Tube Terminated by an Arbitrary Impedance; 7.2.2 Radiation of Sound from an Open-ended Tube; 7.3 Sound Transmission Through Coupled Pipes; 7.3.1 The Transmission Matrix; 7.3.2 System Performance; 7.3.3 Dissipative Silencers; 7.4 Sound Propagation in Ducts with Mean Flow; 7.5 Three-dimensional Waves in Ducts with Rigid Walls |
7.5.1 The Sound Field in a Duct with Rectangular Cross Section7.5.2 The Sound Field in a Duct with Circular Cross Section; 7.5.3 The Sound Field in a Duct with Arbitrary Cross-sectional Shape; 7.6 The Green's Function in a Semi-infinite Duct; 7.7 Sound Propagation in Ducts with Walls of Finite Impedance; 7.7.1 Ducts with Nearly Hard Walls; 7.7.2 Lined Ducts; References; Chapter 8 Sound in Enclosures; 8.1 Introduction; 8.2 The Modal Theory of Sound in Enclosures; 8.2.1 Eigenfrequencies and Mode Shapes; 8.2.2 The Modal Density; 8.2.3 The Green's Function in an Enclosure |
8.3 Statistical Room Acoustics8.3.1 The Perfectly Diffuse Sound Field; 8.3.2 The Sound Field in a Reverberation Room Driven with a Pure Tone; 8.3.3 Frequency Averaging; 8.3.4 The Sound Power Emitted by a Point Source in a Lightly Damped Room; 8.4 The Decay of Sound in a Lightly Damped Room; 8.4.1 The Modal Approach to Decay of Sound; 8.4.2 The Statistical Approach to Decay of Sound; 8.5 Applications of Reverberation Rooms; 8.5.1 Sound Power Determination; 8.5.2 Measurement of Sound Absorption; 8.5.3 Measurement of Transmission Loss; References; Chapter 9 Sound Radiation and Scattering |
9.1 Introduction |
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Sommario/riassunto |
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"Acoustics deals with the production, control, transmission, reception, and effects of sound. Owing to acoustics being an interdisciplinary field, this book is intended to be equally accessible to readers from a range of backgrounds including electrical engineering, physics and mechanical engineering.This book introduces the fundamentals of acoustic wave motion. It addresses in a clear and systematic way some of the most difficult parts of acoustics for beginners, such as the widely different approximations due to the wide frequency range, the apparently arbitrary choice between the use of analytical solutions to the wave equation with boundary conditions, and the fundamentally different energy-based considerations used in noise control. As a |
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result, it provides readers with a self-contained source of information on acoustics which can be used for self-study or as a graduate course text.Key features: Places an emphasis on detailed derivations based on the fundamental laws of physics and interpretations of the resulting formulas. Avoids, where possible, electrical and mechanical equivalent circuits, so as to make it accessible to readers with different backgrounds. Introduces duct acoustics, sound in enclosures, and sound radiation and scattering. Contains a set of appendices which includes material on signal analysis and processing as these tools are essential for the modern acoustician."-- |
"This book is a textbook on fundamentals of acoustic wave motion, and the topics covered by the book include duct acoustics, sound in enclosures, and sound radiation and scattering"-- |
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