Download or read book Design and Construction of an Acoustic Filter Laboratory Using the Helmholtz Resonator Theory written by Hernán Mercado-Corujo and published by . This book was released on 1999 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design and Construction of an Acoustic Filter written by Janis Heather Eisenberg and published by . This book was released on 1998 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acoustic Absorbers and Diffusers written by Trevor J. Cox and published by CRC Press. This book was released on 2002-01-03 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Absorbers and diffusers are two of the main design tools for altering the acoustic conditions of a room, semi-enclosed spaces and the outdoor environment. Their correct use is important for delivering high quality acoustics.This unique and authoritative text describes how to effectively measure, model, design, optimise and apply diffusers and absor
Download or read book Acoustic Absorbers and Diffusers written by Trevor Cox and published by CRC Press. This book was released on 2016-11-18 with total page 753 pages. Available in PDF, EPUB and Kindle. Book excerpt: This definitive guide covers the design and application of absorbers and diffusers in acoustics. Surface diffusion is a relatively young subject area, and diffuser design, application and characterisation are often not well understood. Although there is greater knowledge of absorption, it is also informed by new research. As two of the main design tools for altering the acoustic conditions of rooms, the correct use of absorbers and diffusers is important to the creation of quality acoustics. This text details the evolution and the current state of the art in diffuser and absorber research and application. It covers a range of practical and theoretical aspects, with extensive examples of installations and case studies to cater to practitioners working in the measurement, modelling and design of rooms, semi-enclosed spaces as well as in noise control. It is also invaluable for students and researchers wanting a grounding in acoustic treatment, as well as understanding the latest developments. All chapters have been revised and brought up to date in this new edition, with new applications, absorbers and diffusers featured. Sustainability, portable vocal booths, and fast time domain models for diffusers are just a few of the new sections. Improved techniques for measurement and prediction are included, as well as bringing old methods up-to-date with the latest refinements from standards and research. Most of the prediction methods in the book are now linked to open source implementations and downloadable MATLAB scripts, enabling readers to exploit the knowledge in this book more readily in design and research.
Download or read book Design Development and Construction of a Fluid Acoustic Filter written by A. W. STARBIRD and published by . This book was released on 1960 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: Various devices employed to attenuate noise borne by flowing gas were evaluated as attenuators of noise borne by flowing water. Experiment indicates that expansion chambers offer higher attenuations of fluid-borne sound, at least across the important 20-1000 c band width, than gas theory would predict. We believe that further experimentation will disclose that the dynamics of flow within and through an expansion chamber, not acknowledged by the gas theory, can be controlled to provide even greater and broader-band attenuations than those obtained in the experiments reported herein. For this reason, and because expansion chambers inherently are more compact, less costly, and require less maintenance than the other devices considered, we recommend that their development be pursued. (Author).
Download or read book Theory Design and Tests of Flexible Wall Acoustic Filters written by E. Krasnoff and published by . This book was released on 1963 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The theory for flexible wall liquid-filled acoustic filters of two different types is presented. Equations are derived for the performance prediction of volume resonators in infinite pipelines and in finite pipelines with arbitrary termination. The effect of noise on filter performance is studied and illustrated. An experimental determination of the performance of a volume resonator filter indicates good agreement with theory. Equations are presented for the performance of expansion chamber filters. Their advantages and disadvantages for different situations are discussed. For the special case of high pressure pipe systems, it is concluded that volume resonators are more suitable than expansion chamber filters. (Author).
Download or read book Materials Research Abstracts written by Library of Congress. Science and Technology Division and published by . This book was released on 1962 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Building Science Abstracts written by Building Research Station (Great Britain) and published by . This book was released on 1948 with total page 896 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface Acoustic Wave Filters written by David P. Morgan and published by . This book was released on 2007 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives the fundamental principles and device design techniques for surface acoustic wave filters. It covers the devices in widespread use today: bandpass and pulse compression filters, correlators and non-linear convolvers and resonators. The newest technologies for low bandpass filters are fully covered such as unidirectional transducers, resonators in impedance element filters, resonators in double-mode surface acoustic wave filters and transverse-coupled resonators using waveguides. The book covers the theory of acoustic wave physics, the piezoelectric effect, electrostatics at a surface, effective permittivity, piezoelectric SAW excitation and reception, and the SAW element factor. These are the main requirements for developing quasi-static theory, which gives a basis for the non-reflective transducers in transversal bandpass filters and interdigital pulse compression filters. It is also needed for the reflective transducers used in the newer devices. * A thorough revision of a classic on surface acoustic wave filters first published in 1985 and still in print * Uniquely combines easy -to -understand principles with practical design techniques for all the devices in widespread use today * Complete coverage of all the latest devices which are key to mobile phones, TVs and radar systems * Includes a new foreword by Sir Eric Albert Ash
Download or read book Acoustic Absorbers and Diffusers written by Trevor J. Cox and published by CRC Press. This book was released on 2009-01-26 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: Absorbers and diffusers are two of the main design tools for altering the acoustic conditions of rooms, semi-enclosed spaces and the outdoor environment. Their correct use is important for delivering high quality acoustics. Unique and authoritative, this book decribes how to effectively measure, model, design and apply diffusers and absorbers. It is a resource for new and experienced acousticians, seeking an understanding of the evolution, characteristics and application of modern diffusers. Absorption is a more established technology and so the book blends traditional designs with modern developments. The book covers practical and theoretical aspects of absorbers and diffusers and is well illustrated with examples of installations and case studies. This new edition brings Acoustic Absorbers and Diffusers up-to-date with current research, practice and standards. New developments in measurement, materials, theory and practice since the first edition (published in 2004) are included. The sections on absorbers are extended to include more about noise control.
Download or read book A Note on the Design of Flexible wall Volume Resonator Acoustic Filters written by D. N. Contractor and published by . This book was released on 1964 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: The behavior of flexible-wall, volume-resonator acoustic filters in liquid-filled pipes can be predicted accurately over a wide frequency range by means of existing theory. However, for design purposes, a simple method for the selection of the major parameters of the filter, and the effect of the variation of these parameters upon the filter performance, needs to be made available. Results are presented herein, which will enable one to select an approximate value of the attenuation parameter for given requirements. Additional results show the effect of the variation of the tail pipe parameter on the filter performance. These findings aid in the proper placement of the filter from the open end of the pipe. Experimental results of tests on a resonator filter with three different connectors are presented. These tests indicate that the values used for the conductivity of the connectors and the theoretical predictions of the filter performance are correct. (Author).
Download or read book The Theory and Design of Surface Acoustic Wave Filters written by Rosario Nazaire Demers and published by . This book was released on 1975 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acoustic Filters a State of the Art Summary Phase V written by E. Kakaley and published by . This book was released on 1964 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: As an effort to summarize work done by various investigators in the field of acoustic filter design and theory, most of whose work was Government sponsored, this report is a description of the various types of acoustic filters and a brief explanation of the theory upon which their designs were based. Theoretical and experimental studies of the various filter designs are described and discussed. A proposed program of further study of acoustic filter design principles is presented. (Author).
Download or read book Acoustic Control in Enclosures Using Optimally Designed Helmholtz Resonators written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Room Acoustics written by Heinrich Kuttruff and published by CRC Press. This book was released on 2016-10-03 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Well established as a classic reference and specialised textbook, since its first publication in 1973, Heinrich Kuttruff’s Room Acoustics combines detailed coverage with a state of art presentation of the theory and practice of sound behaviour in closed spaces. This sixth edition presents several additional new sections, for instance on the reflection of a spherical wave from a wall, on finite element methods for sound field calculation and on virtual reality, as well as giving an overhaul of the standard material. Particular emphasis is given to the properties and calculation of reverberation, the most obvious acoustical feature of a room. And further key topics include the various mechanisms of sound absorption and their practical application as well as scattering by wall irregularities including pseudo-stochastic structures. Extensive space is given to of psychoacoustic insights and the quality criteria derived from them, along with new procedures for the sensory assessment of concert hall acoustics. As in earlier editions, one full and updated chapter is devoted to the design and performance of electroacoustic systems which nowadays is not just a method for sound amplification but offers many possibilities for correcting acoustic deficiencies and modifying a hall’s natural acoustics.
Download or read book Acoustic Metamaterials and Phononic Crystals written by Pierre A. Deymier and published by Springer Science & Business Media. This book was released on 2013-01-13 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive book presents all aspects of acoustic metamaterials and phononic crystals. The emphasis is on acoustic wave propagation phenomena at interfaces such as refraction, especially unusual refractive properties and negative refraction. A thorough discussion of the mechanisms leading to such refractive phenomena includes local resonances in metamaterials and scattering in phononic crystals.
Download or read book Sound Insulation written by Carl Hopkins and published by Routledge. This book was released on 2012-05-31 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sound insulation is an important aspect of building performance. This book is a comprehensive guide to sound and vibration theory and its application to the measurement and prediction of sound insulation in buildings. It enables the reader to tackle a wide range of issues relating to sound insulation during the design and construction stages of a building, and to solve problems in existing buildings. The book has been written for engineers, consultants, building designers, students in acoustics, researchers and those involved in the manufacture and design of building products. Key aspects are that it: * Explains the fundamental theory using examples that show its direct application to buildings * Guides the reader through the links between measurement and theory * Explains concepts that are important for the application, interpretation and understanding of guidance documents, test reports, product data sheets, published papers, regulations and Standards * Makes direct reference to ISO and EN Standards on sound insulation * Contains a large number of illustrations showing measurements, predictions and example calculations for quick reference Carl Hopkins previously worked on building acoustics and environmental noise at the Building Research Establishment. During this time he was involved with sound insulation in research, consultancy, standardization, and building regulations as well as being an advisor on acoustics to government departments. He is currently a Senior Lecturer at the University of Liverpool within the Acoustics Research Unit of the School of Architecture.
