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Acoustic absorbers and diffusers / / Trevor Cox, University of Salford, UK, and Peter D'Antonio, RPG Diffusor Systems, USA
| Acoustic absorbers and diffusers / / Trevor Cox, University of Salford, UK, and Peter D'Antonio, RPG Diffusor Systems, USA |
| Autore | Cox Trevor J. |
| Edizione | [Third edition.] |
| Pubbl/distr/stampa | Boca Raton, FL : , : CRC Press, Taylor & Francis, , [2017] |
| Descrizione fisica | 1 online resource (577 pages) : illustrations |
| Disciplina | 620.2 |
| Soggetto topico |
Acoustical engineering
Absorption of sound Diffusers Noise barriers Architectural acoustics |
| ISBN |
1-4987-4100-2
1-315-36921-4 1-315-35222-2 |
| Formato | Materiale a stampa  |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | 1. Introduction -- 2. Absorbers : applications and basic principles -- 3. Diffusers : applications and basic principles -- 4. Measurements of absorber properties -- 5. Measurement of reflections : scattering and diffusion -- 6. Porous sound absorption -- 7. Resonant absorbers -- 8. Other absorbers and diffusers -- 9. Prediction of reflection including difraction -- 10. Schroeder diffusers -- 11. Geometric reflectors and diffusers -- 12. Hybrid surfaces -- 13. Absorbers and diffusers in rooms and geometric room acoustic models -- 14. Active absorbers. |
| Record Nr. | UNINA-9910151704203321 |
Cox Trevor J.
|
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| Boca Raton, FL : , : CRC Press, Taylor & Francis, , [2017] | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||
Propagation of sound in porous media [[electronic resource] ] : modelling sound absorbing materials / / Jean F. Allard, Noureddine Atalla
| Propagation of sound in porous media [[electronic resource] ] : modelling sound absorbing materials / / Jean F. Allard, Noureddine Atalla |
| Autore | Allard J.-F |
| Edizione | [2nd ed.] |
| Pubbl/distr/stampa | Hoboken, NJ, : Wiley, 2009 |
| Descrizione fisica | 1 online resource (374 p.) |
| Disciplina | 620.11694015118 |
| Altri autori (Persone) | AtallaNoureddine |
| Soggetto topico |
Porous materials - Acoustic properties - Mathematical models
Absorption of sound Sound - Transmission |
| ISBN |
1-282-34953-8
9786612349539 0-470-74733-1 0-470-74734-X |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto |
Propagation of Sound in Porous Media; Contents; Preface to the second edition; 1 Plane waves in isotropic fluids and solids; 1.1 Introduction; 1.2 Notation - vector operators; 1.3 Strain in a deformable medium; 1.4 Stress in a deformable medium; 1.5 Stress-strain relations for an isotropic elastic medium; 1.6 Equations of motion; 1.7 Wave equation in a fluid; 1.8 Wave equations in an elastic solid; References; 2 Acoustic impedance at normal incidence of fluids. Substitution of a fluid layer for a porous layer; 2.1 Introduction; 2.2 Plane waves in unbounded fluids; 2.2.1 Travelling waves
2.2.2 Example2.2.3 Attenuation; 2.2.4 Superposition of two waves propagating in opposite directions; 2.3 Main properties of impedance at normal incidence; 2.3.1 Impedance variation along a direction of propagation; 2.3.2 Impedance at normal incidence of a layer of fluid backed by an impervious rigid wall; 2.3.3 Impedance at normal incidence of a multilayered fluid; 2.4 Reflection coefficient and absorption coefficient at normal incidence; 2.4.1 Reflection coefficient; 2.4.2 Absorption coefficient; 2.5 Fluids equivalent to porous materials: the laws of Delany and Bazley 2.5.1 Porosity and flow resistivity in porous materials2.5.2 Microscopic and macroscopic description of sound propagation in porous media; 2.5.3 The Laws of Delany and Bazley and flow resistivity; 2.6 Examples; 2.7 The complex exponential representation; References; 3 Acoustic impedance at oblique incidence in fluids. Substitution of a fluid layer for a porous layer; 3.1 Introduction; 3.2 Inhomogeneous plane waves in isotropic fluids; 3.3 Reflection and refraction at oblique incidence; 3.4 Impedance at oblique incidence in isotropic fluids 3.4.1 Impedance variation along a direction perpendicular to an impedance plane3.4.2 Impedance at oblique incidence for a layer of finite thickness backed by an impervious rigid wall; 3.4.3 Impedance at oblique incidence in a multilayered fluid; 3.5 Reflection coefficient and absorption coefficient at oblique incidence; 3.6 Examples; 3.7 Plane waves in fluids equivalent to transversely isotropic porous media; 3.8 Impedance at oblique incidence at the surface of a fluid equivalent to an anisotropic porous material; 3.9 Example; References 4 Sound propagation in cylindrical tubes and porous materials having cylindrical pores4.1 Introduction; 4.2 Viscosity effects; 4.3 Thermal effects; 4.4 Effective density and bulk modulus for cylindrical tubes having triangular, rectangular and hexagonal cross-sections; 4.5 High- and low-frequency approximation; 4.6 Evaluation of the effective density and the bulk modulus of the air in layers of porous materials with identical pores perpendicular to the surface; 4.6.1 Effective density and bulk modulus in cylindrical pores having a circular cross-section 4.6.2 Effective density and bulk modulus in slits |
| Record Nr. | UNINA-9910139967103321 |
|
Allard J.-F
|
||
| Hoboken, NJ, : Wiley, 2009 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||
Propagation of sound in porous media [[electronic resource] ] : modelling sound absorbing materials / / Jean F. Allard, Noureddine Atalla
| Propagation of sound in porous media [[electronic resource] ] : modelling sound absorbing materials / / Jean F. Allard, Noureddine Atalla |
| Autore | Allard J.-F |
| Edizione | [2nd ed.] |
| Pubbl/distr/stampa | Hoboken, NJ, : Wiley, 2009 |
| Descrizione fisica | 1 online resource (374 p.) |
| Disciplina | 620.11694015118 |
| Altri autori (Persone) | AtallaNoureddine |
| Soggetto topico |
Porous materials - Acoustic properties - Mathematical models
Absorption of sound Sound - Transmission |
| ISBN |
1-282-34953-8
9786612349539 0-470-74733-1 0-470-74734-X |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto |
Propagation of Sound in Porous Media; Contents; Preface to the second edition; 1 Plane waves in isotropic fluids and solids; 1.1 Introduction; 1.2 Notation - vector operators; 1.3 Strain in a deformable medium; 1.4 Stress in a deformable medium; 1.5 Stress-strain relations for an isotropic elastic medium; 1.6 Equations of motion; 1.7 Wave equation in a fluid; 1.8 Wave equations in an elastic solid; References; 2 Acoustic impedance at normal incidence of fluids. Substitution of a fluid layer for a porous layer; 2.1 Introduction; 2.2 Plane waves in unbounded fluids; 2.2.1 Travelling waves
2.2.2 Example2.2.3 Attenuation; 2.2.4 Superposition of two waves propagating in opposite directions; 2.3 Main properties of impedance at normal incidence; 2.3.1 Impedance variation along a direction of propagation; 2.3.2 Impedance at normal incidence of a layer of fluid backed by an impervious rigid wall; 2.3.3 Impedance at normal incidence of a multilayered fluid; 2.4 Reflection coefficient and absorption coefficient at normal incidence; 2.4.1 Reflection coefficient; 2.4.2 Absorption coefficient; 2.5 Fluids equivalent to porous materials: the laws of Delany and Bazley 2.5.1 Porosity and flow resistivity in porous materials2.5.2 Microscopic and macroscopic description of sound propagation in porous media; 2.5.3 The Laws of Delany and Bazley and flow resistivity; 2.6 Examples; 2.7 The complex exponential representation; References; 3 Acoustic impedance at oblique incidence in fluids. Substitution of a fluid layer for a porous layer; 3.1 Introduction; 3.2 Inhomogeneous plane waves in isotropic fluids; 3.3 Reflection and refraction at oblique incidence; 3.4 Impedance at oblique incidence in isotropic fluids 3.4.1 Impedance variation along a direction perpendicular to an impedance plane3.4.2 Impedance at oblique incidence for a layer of finite thickness backed by an impervious rigid wall; 3.4.3 Impedance at oblique incidence in a multilayered fluid; 3.5 Reflection coefficient and absorption coefficient at oblique incidence; 3.6 Examples; 3.7 Plane waves in fluids equivalent to transversely isotropic porous media; 3.8 Impedance at oblique incidence at the surface of a fluid equivalent to an anisotropic porous material; 3.9 Example; References 4 Sound propagation in cylindrical tubes and porous materials having cylindrical pores4.1 Introduction; 4.2 Viscosity effects; 4.3 Thermal effects; 4.4 Effective density and bulk modulus for cylindrical tubes having triangular, rectangular and hexagonal cross-sections; 4.5 High- and low-frequency approximation; 4.6 Evaluation of the effective density and the bulk modulus of the air in layers of porous materials with identical pores perpendicular to the surface; 4.6.1 Effective density and bulk modulus in cylindrical pores having a circular cross-section 4.6.2 Effective density and bulk modulus in slits |
| Record Nr. | UNINA-9910829859503321 |
|
Allard J.-F
|
||
| Hoboken, NJ, : Wiley, 2009 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||
Propagation of sound in porous media [[electronic resource] ] : modelling sound absorbing materials / / Jean F. Allard, Noureddine Atalla
| Propagation of sound in porous media [[electronic resource] ] : modelling sound absorbing materials / / Jean F. Allard, Noureddine Atalla |
| Autore | Allard J.-F |
| Edizione | [2nd ed.] |
| Pubbl/distr/stampa | Hoboken, NJ, : Wiley, 2009 |
| Descrizione fisica | 1 online resource (374 p.) |
| Disciplina | 620.11694015118 |
| Altri autori (Persone) | AtallaNoureddine |
| Soggetto topico |
Porous materials - Acoustic properties - Mathematical models
Absorption of sound Sound - Transmission |
| ISBN |
1-282-34953-8
9786612349539 0-470-74733-1 0-470-74734-X |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto |
Propagation of Sound in Porous Media; Contents; Preface to the second edition; 1 Plane waves in isotropic fluids and solids; 1.1 Introduction; 1.2 Notation - vector operators; 1.3 Strain in a deformable medium; 1.4 Stress in a deformable medium; 1.5 Stress-strain relations for an isotropic elastic medium; 1.6 Equations of motion; 1.7 Wave equation in a fluid; 1.8 Wave equations in an elastic solid; References; 2 Acoustic impedance at normal incidence of fluids. Substitution of a fluid layer for a porous layer; 2.1 Introduction; 2.2 Plane waves in unbounded fluids; 2.2.1 Travelling waves
2.2.2 Example2.2.3 Attenuation; 2.2.4 Superposition of two waves propagating in opposite directions; 2.3 Main properties of impedance at normal incidence; 2.3.1 Impedance variation along a direction of propagation; 2.3.2 Impedance at normal incidence of a layer of fluid backed by an impervious rigid wall; 2.3.3 Impedance at normal incidence of a multilayered fluid; 2.4 Reflection coefficient and absorption coefficient at normal incidence; 2.4.1 Reflection coefficient; 2.4.2 Absorption coefficient; 2.5 Fluids equivalent to porous materials: the laws of Delany and Bazley 2.5.1 Porosity and flow resistivity in porous materials2.5.2 Microscopic and macroscopic description of sound propagation in porous media; 2.5.3 The Laws of Delany and Bazley and flow resistivity; 2.6 Examples; 2.7 The complex exponential representation; References; 3 Acoustic impedance at oblique incidence in fluids. Substitution of a fluid layer for a porous layer; 3.1 Introduction; 3.2 Inhomogeneous plane waves in isotropic fluids; 3.3 Reflection and refraction at oblique incidence; 3.4 Impedance at oblique incidence in isotropic fluids 3.4.1 Impedance variation along a direction perpendicular to an impedance plane3.4.2 Impedance at oblique incidence for a layer of finite thickness backed by an impervious rigid wall; 3.4.3 Impedance at oblique incidence in a multilayered fluid; 3.5 Reflection coefficient and absorption coefficient at oblique incidence; 3.6 Examples; 3.7 Plane waves in fluids equivalent to transversely isotropic porous media; 3.8 Impedance at oblique incidence at the surface of a fluid equivalent to an anisotropic porous material; 3.9 Example; References 4 Sound propagation in cylindrical tubes and porous materials having cylindrical pores4.1 Introduction; 4.2 Viscosity effects; 4.3 Thermal effects; 4.4 Effective density and bulk modulus for cylindrical tubes having triangular, rectangular and hexagonal cross-sections; 4.5 High- and low-frequency approximation; 4.6 Evaluation of the effective density and the bulk modulus of the air in layers of porous materials with identical pores perpendicular to the surface; 4.6.1 Effective density and bulk modulus in cylindrical pores having a circular cross-section 4.6.2 Effective density and bulk modulus in slits |
| Record Nr. | UNINA-9910840683803321 |
|
Allard J.-F
|
||
| Hoboken, NJ, : Wiley, 2009 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||
