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Effect Of The Acoustic Boundary Layer On Scale Model Simulation Of Outdoor Sound Propagation
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Book Synopsis Effect of the acoustic boundary layer on scale model simulation of outdoor sound propagation by : Martin Almgren
Download or read book Effect of the acoustic boundary layer on scale model simulation of outdoor sound propagation written by Martin Almgren and published by . This book was released on 1985 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scale Model Simulation of Sound Propagation Considering Sound Speed Gradients and Acoustic Boundary Layers at a Rigid Surface by : Martin Almgren
Download or read book Scale Model Simulation of Sound Propagation Considering Sound Speed Gradients and Acoustic Boundary Layers at a Rigid Surface written by Martin Almgren and published by . This book was released on 1986 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Springer Handbook of Acoustics by : Thomas Rossing
Download or read book Springer Handbook of Acoustics written by Thomas Rossing and published by Springer Science & Business Media. This book was released on 2007-06-21 with total page 1179 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an unparalleled modern handbook reflecting the richly interdisciplinary nature of acoustics edited by an acknowledged master in the field. The handbook reviews the most important areas of the subject, with emphasis on current research. The authors of the various chapters are all experts in their fields. Each chapter is richly illustrated with figures and tables. The latest research and applications are incorporated throughout, including computer recognition and synthesis of speech, physiological acoustics, diagnostic imaging and therapeutic applications and acoustical oceanography. An accompanying CD-ROM contains audio and video files.
Book Synopsis Scale Model Simulation of Outdoor Sound Propagation, Air and Water System Acoustics, Applied Psychoacoustics and Room Acoustics by : Martin Almgren
Download or read book Scale Model Simulation of Outdoor Sound Propagation, Air and Water System Acoustics, Applied Psychoacoustics and Room Acoustics written by Martin Almgren and published by . This book was released on 1983 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scale Model Simulation of Outdoor Sound Propagation by : Martin Almgren
Download or read book Scale Model Simulation of Outdoor Sound Propagation written by Martin Almgren and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scale Model Simulation of Outdoor Sound Propagation Under the Influence of a Sound Speed Gradient by : Martin Almgren
Download or read book Scale Model Simulation of Outdoor Sound Propagation Under the Influence of a Sound Speed Gradient written by Martin Almgren and published by . This book was released on 1986 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scale Model Simulation of Outdoor Sound Propagation by : Martin Almgren
Download or read book Scale Model Simulation of Outdoor Sound Propagation written by Martin Almgren and published by . This book was released on 1983 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scale Model Simulation of Outdoor Sound Propagation Selection of Model Ground Materials by : Martin Almgren
Download or read book Scale Model Simulation of Outdoor Sound Propagation Selection of Model Ground Materials written by Martin Almgren and published by . This book was released on 1988 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Predicting Outdoor Sound by : Keith Attenborough
Download or read book Predicting Outdoor Sound written by Keith Attenborough and published by CRC Press. This book was released on 2021-03-07 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of Predicting Outdoor Sound is an up-to-date reference on the propagation of sound close to the ground and its prediction. New content includes comparisons between predictions and data for road traffic, railway and wind turbine noise; descriptions of source characteristics in the HARMONOISE model; propagation over rough seas, parallel low walls, and lattices; outlines of numerical methods; gabion (caged stones) and sonic crystal noise barriers; meteorological effects on noise barrier performance; and the prediction requirements for auralization. The book brings together relevant theories, prediction schemes, and data, thereby providing a basis for determining what model or scheme might be applicable for any situation. It also offers a background on useful analytical approximations and the restrictions, as well as difficulties and limitations associated with engineering prediction schemes. The text should be of considerable interest to researchers in outdoor sound propagation and, more generally, it should provide a comprehensive primer on the topic for lecturers, consultants and students in acoustics and noise control.
Book Synopsis Outdoor Sound Propagation Modelling in Complex Environments: Recent Developments in the Parabolic Equation Method by :
Download or read book Outdoor Sound Propagation Modelling in Complex Environments: Recent Developments in the Parabolic Equation Method written by and published by . This book was released on 2006 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: In complex environments the modelling of outdoor sound propagation implies to take into account the mixed influence of ground characteristics (topography, obstacles, impedance, etc.) and atmospheric conditions (refraction and turbulence). During the last decade significant progress has been made in the modelling of sound propagation over distances ranging from hundreds meters to kilometres, and the agreement between calculated and measured fields has been greatly improved. New developments appear in the parabolic-equation method. In this paper we present a method which evaluates the propagation of an acoustic wave above uneven terrains including realistic meteorological parameters. In our approach the effects of the topography are modelled using appropriate rotated co-ordinates systems in order to treat the non-flat ground as a succession of flat domains. We also examine the influence of scale resolution on numerical simulation of long range sound propagation through the turbulent atmosphere. Currently, we generate the turbulence using a Random Fourier Modes technique, such that the turbulent fluctuation at any point in the medium (either scalar or vectorial in nature) is calculated from the sum of a chosen number of modes. Our model of outdoors sound propagation is validated both with classical numerical benchmark cases and recent outdoor experiments.
Book Synopsis 12 ICA by : Canadian Acoustical Association
Download or read book 12 ICA written by Canadian Acoustical Association and published by . This book was released on 1986 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling of Sound Propagation in Forests Using the Transmission Line Matrix Method by : Pierre Chobeau
Download or read book Modeling of Sound Propagation in Forests Using the Transmission Line Matrix Method written by Pierre Chobeau and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The prediction of sound propagation in presence of forest remains a major challenge for the outdoor sound propagation community. Reference numerical models such as the Transmission Line Matrix (TLM) method can be developed in order to accurately predict each acoustical phenomenon that takes place inside forest. The first need for the TLM method is an efficient theory-based absorbing layer formulation that enables the truncation of the numerical domain. The two proposed absorbing layer formulations are based on the approximation of the perfectly matched layer theory. The most efficient proposed formulation is shown to be equivalent to wave propagation in a lossy media, which, in the TLM method formulation, is introduced using an additional dissipation term. Then, the ability of the TLM method for the simulation of scattering is studied comparing the numerical results to both analytical solutions and measurements on scale models. Lastly, the attenuation of acoustic levels by a simplified forest is numerically studied using several arrangements of cylinders placed normal to either reflecting or absorbing ground. It is observed that randomly spaced arrangements are more inclined to attenuate acoustic waves than periodic arrangements. Moreover, the sensitivity to the density, the length of the array and the ground absorption is tested. The main trend shows that the density and the distribution are two important parameters for the attenuation. In future work, it can be interesting to look at the sensitivity of each parameter. This study could then be used to relate the morphology (i.e. distribution, density, length) of a forest to the acoustical properties of the forest.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Predicting Outdoor Sound by : Keith Attenborough
Download or read book Predicting Outdoor Sound written by Keith Attenborough and published by Taylor & Francis. This book was released on 2007 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a practical yet academically rigorous reference for acoustic engineers, especially those working on major projects where noise control is a key issue such as the design and construction of Heathrow Terminal 5.
Download or read book Inter-noise written by and published by . This book was released on 1986 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Model-scale Sound Propagation Experiment by :
Download or read book Model-scale Sound Propagation Experiment written by and published by . This book was released on 1988 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Predicting Outdoor Sound by : Keith Attenborough
Download or read book Predicting Outdoor Sound written by Keith Attenborough and published by CRC Press. This book was released on 2021-03-03 with total page 579 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of Predicting Outdoor Sound is an up-to-date reference on the propagation of sound close to the ground and its prediction. New content includes comparisons between predictions and data for road traffic, railway and wind turbine noise; descriptions of source characteristics in the HARMONOISE model; propagation over rough seas, parallel low walls, and lattices; outlines of numerical methods; gabion (caged stones) and sonic crystal noise barriers; meteorological effects on noise barrier performance; and the prediction requirements for auralization. The book brings together relevant theories, prediction schemes, and data, thereby providing a basis for determining what model or scheme might be applicable for any situation. It also offers a background on useful analytical approximations and the restrictions, as well as difficulties and limitations associated with engineering prediction schemes. The text should be of considerable interest to researchers in outdoor sound propagation and, more generally, it should provide a comprehensive primer on the topic for lecturers, consultants and students in acoustics and noise control.
