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 Proceedings of the ASME Noise Control and Acoustics Division written by and published by . This book was released on 2003 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Developments in Ceramic Materials Research written by Dena Rosslere and published by Nova Publishers. This book was released on 2007 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ceramics are refractory, inorganic, and non-metallic materials. They can be divided into two classes: traditional and advanced. Traditional ceramics include clay products, silicate glass and cement; while advanced ceramics consist of carbides (SiC), pure oxides (Al2O3), nitrides (Si3N4), non-silicate glasses and many others. Ceramics offer many advantages compared to other materials. They are harder and stiffer than steel; more heat and corrosion resistant than metals or polymers; less dense than most metals and their alloys; and their raw materials are both plentiful and inexpensive. Ceramic materials display a wide range of properties which facilitate their use in many different product areas. This new book presents leading-edge research in this field from around the world.
Download or read book Acoustic Resonators for Noise Control in Enclosures written by Ganghua Yu and published by . This book was released on 2009 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Control of Noise and Structural Vibration written by Qibo Mao and published by Springer Science & Business Media. This book was released on 2013-06-02 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Control of Noise and Structural Vibration presents a MATLAB®-based approach to solving the problems of undesirable noise generation and transmission by structures and of undesirable vibration within structures in response to environmental or operational forces. The fundamentals of acoustics, vibration and coupling between vibrating structures and the sound fields they generate are introduced including a discussion of the finite element method for vibration analysis. Following this, the treatment of sound and vibration control begins, illustrated by example systems such as beams, plates and double walls. Sensor and actuator placement is explained as is the idea of modal sensor–actuators. The design of appropriate feedback systems includes consideration of basic stability criteria and robust active structural acoustic control. Positive position feedback (PPF) and multimode control are also described in the context of loudspeaker–duct and loudspeaker–microphone models. The design of various components is detailed including the analog circuit for PPF, adaptive (semi-active) Helmholtz resonators and shunt piezoelectric circuits for noise and vibration suppression. The text makes extensive use of MATLAB® examples and these can be simulated using files available for download from the book’s webpage at springer.com. End-of-chapter exercises will help readers to assimilate the material as they progress through the book. Control of Noise and Structural Vibration will be of considerable interest to the student of vibration and noise control and also to academic researchers working in the field. It’s tutorial features will help practitioners who wish to update their knowledge with self-study.
Download or read book The Journal of the Acoustical Society of America written by Acoustical Society of America and published by . This book was released on 2007 with total page 1552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Acoustics Concepts Absorbers and Silencers for Acoustical Comfort and Noise Control written by Helmut V. Fuchs and published by Springer Science & Business Media. This book was released on 2013-01-12 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author gives a comprehensive overview of materials and components for noise control and acoustical comfort. Sound absorbers must meet acoustical and architectural requirements, which fibrous or porous material alone can meet. Basics and applications are demonstrated, with representative examples for spatial acoustics, free-field test facilities and canal linings. Acoustic engineers and construction professionals will find some new basic concepts and tools for developments in order to improve acoustical comfort. Interference absorbers, active resonators and micro-perforated absorbers of different materials and designs complete the list of applications.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2003 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cavity Noise Control Using Helmholtz Resonators written by J. S. Hsu and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1971 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Active Feedback Control of Acoustic Noise in 3 D Enclosures written by Feng Liu and published by . This book was released on 2002 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Active Noise Control (ANC) strategies using feedback control methods are investigated for reducing acoustic noise in 3-D enclosures. It has been shown that robust control design techniques are effective in broadband control of noise especially in low frequency range. The work presented includes modeling, system identification, controller design, and experimental validation of different active control methodologies. The finite dimensional approximate models were obtained using both analytical as well as system identification-based methods. The analytical model was derived using basic 3-D wave equation and assumed modes method. The system identification-based model was derived using ERA-based system-id toolbox (SOCIT). The controller designs presented include LQG, passivity-based, and an H-infinity designs. The LQG design which used the state-weighting matrix derived directly from the energy function of the enclosure performed very effectively. The passivity-based controllers gave the most satisfactory closed-loop performance. These controllers are based on energy-extraction principle, and therefore, are the most desirable candidates for ANC systems. These controllers have excellent stability robustness properties as well. With high modal density and resonant peaks in the frequency response the design of H-infinity controllers becomes very difficult. For single and multi-tone cases, both LQG as well as passivity-based controllers gave significantly large noise reductions. For broadband white noise disturbance the noise reduction up to 6 dB was obtained without destabilization.
Download or read book Active Noise Control of Acoustic Enclosures Using an Approximate Constant Volume Velocity Source written by Steven A. Lane and published by . This book was released on 1999 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Noise Control Engineering Journal written by and published by . This book was released on 1991 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Noise and Vibration Control written by Malcolm J. Crocker and published by John Wiley & Sons. This book was released on 2007-10-05 with total page 1594 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two of the most acclaimed reference works in the area of acoustics in recent years have been our Encyclopedia of Acoustics, 4 Volume set and the Handbook of Acoustics spin-off. These works, edited by Malcolm Crocker, positioned Wiley as a major player in the acoustics reference market. With our recently published revision of Beranek & Ver's Noise and Vibration Control Engineering, Wiley is a highly respected name in the acoustics business. Crocker's new handbook covers an area of great importance to engineers and designers. Noise and vibration control is one largest areas of application of the acoustics topics covered in the successful encyclopedia and handbook. It is also an area that has been under-published in recent years. Crocker has positioned this reference to cover the gamut of topics while focusing more on the applications to industrial needs. In this way the book will become the best single source of need-to-know information for the professional markets.
Download or read book AIAA Journal written by American Institute of Aeronautics and Astronautics and published by . This book was released on 1997 with total page 1152 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.
