Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Insulation --- Acoustic insulation --- Sound absorption --- Insulation --- Acoustic insulation --- Sound absorption

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Thanks to the progress made in materials research and to the introduction of innovative manufacturing technologies, a wide range of sound-absorbing elements are currently available to adjust the acoustic features of an environment. Nowadays, performance is only one of the required specifications, together with environmental compatibility, longevity, and affordable cost. This book collects the most recent advances in the broad-spectrum characterization of sound-absorbing materials used in civil, industrial, and tertiary applications, by means of experimental, numerical, or theoretical studies.

Technology: general issues --- History of engineering & technology --- hollow perforated spherical structure with extended tubes --- low frequency sound absorption --- melamine foam --- wideband sound absorber --- speech clarity --- bass ratio --- sound absorption --- reverberation time --- acoustics --- aerogels --- modeling --- fiber --- porous materials --- acoustic measurements --- sound absorption coefficient --- cement-based materials --- building materials --- pervious concrete --- acoustic concrete --- household end-of-life materials --- building retrofitting --- sound insulation --- vulnerable houses --- circular economy --- egg-box --- cardboard --- textile waste --- reuse --- shunted loudspeaker --- optimal sound absorption --- fully exhaustive method --- steel industry by-products --- sound reduction index --- granular materials --- inverse method --- cross laminated timber --- impact noise --- rubber ball --- sustainable --- timber --- perforated plate --- stepwise apertures --- low frequency --- membranes --- measurement method --- transmission loss --- simulations --- experiment --- scattering effect --- diffusion coefficient --- reflecting panels --- QRD --- ISO 17497 --- hollow perforated spherical structure with extended tubes --- low frequency sound absorption --- melamine foam --- wideband sound absorber --- speech clarity --- bass ratio --- sound absorption --- reverberation time --- acoustics --- aerogels --- modeling --- fiber --- porous materials --- acoustic measurements --- sound absorption coefficient --- cement-based materials --- building materials --- pervious concrete --- acoustic concrete --- household end-of-life materials --- building retrofitting --- sound insulation --- vulnerable houses --- circular economy --- egg-box --- cardboard --- textile waste --- reuse --- shunted loudspeaker --- optimal sound absorption --- fully exhaustive method --- steel industry by-products --- sound reduction index --- granular materials --- inverse method --- cross laminated timber --- impact noise --- rubber ball --- sustainable --- timber --- perforated plate --- stepwise apertures --- low frequency --- membranes --- measurement method --- transmission loss --- simulations --- experiment --- scattering effect --- diffusion coefficient --- reflecting panels --- QRD --- ISO 17497

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Thanks to the progress made in materials research and to the introduction of innovative manufacturing technologies, a wide range of sound-absorbing elements are currently available to adjust the acoustic features of an environment. Nowadays, performance is only one of the required specifications, together with environmental compatibility, longevity, and affordable cost. This book collects the most recent advances in the broad-spectrum characterization of sound-absorbing materials used in civil, industrial, and tertiary applications, by means of experimental, numerical, or theoretical studies.

hollow perforated spherical structure with extended tubes --- low frequency sound absorption --- melamine foam --- wideband sound absorber --- speech clarity --- bass ratio --- sound absorption --- reverberation time --- acoustics --- aerogels --- modeling --- fiber --- porous materials --- acoustic measurements --- sound absorption coefficient --- cement-based materials --- building materials --- pervious concrete --- acoustic concrete --- household end-of-life materials --- building retrofitting --- sound insulation --- vulnerable houses --- circular economy --- egg-box --- cardboard --- textile waste --- reuse --- shunted loudspeaker --- optimal sound absorption --- fully exhaustive method --- steel industry by-products --- sound reduction index --- granular materials --- inverse method --- cross laminated timber --- impact noise --- rubber ball --- sustainable --- timber --- perforated plate --- stepwise apertures --- low frequency --- membranes --- measurement method --- transmission loss --- simulations --- experiment --- scattering effect --- diffusion coefficient --- reflecting panels --- QRD --- ISO 17497 --- n/a

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Materials with sound-absorbing or sound-insulating properties have been rapidly evolving in recent years for several reasons. On one side, there is the ever-increasing awareness of the adverse effects that noise and lack of acoustic comfort may have on human health. On the other, the availability of more sophisticated fabrication techniques, calculation methods, and new materials, has stimulated researchers and, more and more frequently, industry to develop customized materials with improved properties.This book collects contributions from different researchers covering several topics. A group of papers investigated the use of 3D printing to obtain perforated panels with extended frequency response, as well as to ideally design an optimized cell distribution to print (when fabrication techniques will make it possible) a porous material with a broader sound absorption. The role of the geometrical and microstructural properties of granular molecular sieves is investigated by another paper. A second group of papers focused its attention on the use of natural or recycled components to create a skeleton of porous materials with good sound-absorbing properties and low environmental impact. Cigarette butts, recycled textile waste, and almond skins have been investigated by different authors.Finally, the last batch of papers included a review of sound insulation properties of innovative concretes and two research papers focussing on a numerical and experimental analysis of wood plastic composite (WPC) panels and on the potential of semi-active solutions employing compressible constrained layer damping (CCLD).

Technology: general issues --- perforated panel --- absorber array --- low frequency absorption --- sound absorber --- cigarette butts --- sustainable material --- recycling --- variability analysis --- textile waste --- biopolymers --- sound absorption --- sustainable materials --- circular economy --- polyurethane foam --- thermal property --- phase change material --- flame retardant --- perforated plates with extended tubes --- porous materials --- periodic absorber --- wood plastic composite --- transmission loss --- radiation efficiency --- orthotropic panel --- wavenumber analysis --- molecular sieve pellets --- impedance tube --- sound transmission loss --- semi-active damping --- sandwich panel --- morphing structure --- compressible constrained layer damping --- composite materials --- anisotropic materials --- optimized absorption --- diffuse field --- graded properties --- agro-waste --- hygrothermal performances --- concrete --- noise --- acoustic properties --- sound-absorbing --- sound-reflecting --- n/a

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Satisfactory acoustics is crucial for the ability of spaces such as auditoriums and lecture rooms to perform their primary function. The acoustics of dwellings and offices greatly affects the quality of our life, since we are all consciously or subconsciously aware of the sounds to which we are daily subjected. Architectural acoustics, which encompasses room and building acoustics, is the scientific field that deals with these topics and can be defined as the study of generation, propagation, and effects of sound in enclosures. Modeling techniques, as well as related acoustic theories for accurately calculating the sound field, have been the center of many major new developments. In addition, the image conveyed by a purely physical description of sound would be incomplete without regarding human perception; hence, the interrelation between objective stimuli and subjective sensations is a field of important investigations. A holistic approach in terms of research and practice is the optimum way for solving the perplexing problems which arise in the design or refurbishment of spaces, since current trends in contemporary architecture, such as transparency, openness, and preference for bare sound-reflecting surfaces are continuing pushing the very limits of functional acoustics. All the advances in architectural acoustics gathered in this Special Issue, we hope that inspire researchers and acousticians to explore new directions in this age of scientific convergence.

Research & information: general --- Mathematics & science --- acoustic measurements --- impulse response measurements --- omnidirectional source --- dodecahedron --- acoustic parameters --- sound source --- reverberation time --- ISO 3382 --- auralization --- sound absorption --- perforated panels --- micro-perforated panels --- resonant absorbers --- frequency domain --- PUFEM --- room acoustics --- wave-based method --- discretization error --- explicit method --- finite element method --- high order scheme --- room acoustic simulations --- time domain --- shoebox concert hall --- diffusive surfaces --- diffusers location --- acoustical parameters --- variable acoustics --- subjective investigation --- acoustics --- opera house --- intangible cultural heritage --- open-air ancient theatres --- ISO 3382-1 --- firecrackers --- building acoustics --- sound absorption coefficient --- prediction models --- supervised learning method --- worship space acoustics --- acoustics simulation --- acoustic heritage --- archaeo-acoustics --- acoustic subspaces --- FDTD simulation --- speech intelligibility --- open-plan offices --- spatial decay --- ISO 3382-3 --- room absorption --- office noise --- speech --- calculation models --- absorption --- scattering --- airflow resistivity --- long space --- coherent image source method --- sound-absorbing boundary --- sound field modeling --- scale-model experiment --- reflection power --- room response --- directional decay rates --- room modes --- eigenbeam processing --- spatial correlation --- concert hall acoustics --- lateral reflections --- shoebox typology --- spatial impression --- perception thresholds --- skeletal reflections --- reflection sequence --- seat dip effect --- seat height --- seat spacing --- mechanism --- acoustic measurements --- impulse response measurements --- omnidirectional source --- dodecahedron --- acoustic parameters --- sound source --- reverberation time --- ISO 3382 --- auralization --- sound absorption --- perforated panels --- micro-perforated panels --- resonant absorbers --- frequency domain --- PUFEM --- room acoustics --- wave-based method --- discretization error --- explicit method --- finite element method --- high order scheme --- room acoustic simulations --- time domain --- shoebox concert hall --- diffusive surfaces --- diffusers location --- acoustical parameters --- variable acoustics --- subjective investigation --- acoustics --- opera house --- intangible cultural heritage --- open-air ancient theatres --- ISO 3382-1 --- firecrackers --- building acoustics --- sound absorption coefficient --- prediction models --- supervised learning method --- worship space acoustics --- acoustics simulation --- acoustic heritage --- archaeo-acoustics --- acoustic subspaces --- FDTD simulation --- speech intelligibility --- open-plan offices --- spatial decay --- ISO 3382-3 --- room absorption --- office noise --- speech --- calculation models --- absorption --- scattering --- airflow resistivity --- long space --- coherent image source method --- sound-absorbing boundary --- sound field modeling --- scale-model experiment --- reflection power --- room response --- directional decay rates --- room modes --- eigenbeam processing --- spatial correlation --- concert hall acoustics --- lateral reflections --- shoebox typology --- spatial impression --- perception thresholds --- skeletal reflections --- reflection sequence --- seat dip effect --- seat height --- seat spacing --- mechanism