Geometry.Net - Science: Active Noise Control

VTED Home Page Search VTED For An Expert Services For Virginia
Page http//www.me.vt.edu/ME/people/faculty/burdisso.html Expertise Passive andactive control of sound and vibration; active noise control from turbofan
http://dolomite.rgs.vt.edu/vted/vtexperts.keyword_search?p_keyword=acoustics
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ANVC The active noise and vibration control groupat the Department of Mechanical Engineering.
http://www.mecheng.adelaide.edu.au/anvc/
Insulation And Sound Proofing Material To Soundproof Boats
active control sound techniques using high quality sound proofing material to reduce noise levels on marine engines.
http://www.soundstop.com

Extractions: info@soundstop.com Maximize the pleasure boating experience - Minimize the noise! No matter how ideal boating conditions can be, quieter is better. GSI offers sound proofing solutions to the typical fatigue and annoyance brought on by excessive exposure to noise. Since 1973, GSI has developed a line of soundproofing applications that are being used in OEM production lines, by service dealers and individual boat owners
Professor Colin H Hansen
His current research interests are focussed almost entirely on active noise andvibration control and he has authored or coauthored over 100 papers in this
http://www.mecheng.adelaide.edu.au/anvc/chansen/chh.html
Noise Control Engineering, Inc. (Active)
Offer noise and vibration control engineering services for the marine, industrial, and commercial Category Business Energy and Environment noise and Vibration control a passive silencer for an exhaust system that replaced an active system various constructionequipment and supply guidance on the optimum noise control approach
http://www.noise-control.com/

Extractions: 799 MIDDLESEX TURNPIKE BILLERICA MA 01821 E-MAIL: nonoise@attbi.com PHONE: 978-670-5339 FAX: 978-667-7047 Member: National Council of Acoustical Consultants NCE is a small business that readily responds to its clients needs. We have the tools, experience, and know-how required to provide the optimal solution to all types of acoustic problems. Our capabilities include detail design of noise control treatments, testing, and monitoring in the following areas In December of 2001, NCE was awarded a SBIR (Small Business Innovative Research) Phase II contract to provide new software to predict noise onboard all types of marine vessels. NCE has a prototype of this program, ASAP - Advanced Ship Acoustic Program. This program has been used to accurately predict habitability noise on numerous types of vessels (see comparison.html for one example). It has also been used to predict underwater radiated noise of research and naval vessels and to perform sonar self-noise analyses (see rad.html
Noise Control Engineering, Inc. (Active)
DIAGNOSING AND CURING GLOBAL SHIP RESONANCES. Michael Bahtiarian, noise controlEngineering, Inc. noise control Engineering Inc. 799 Middlesex Tnpk.
http://www.noise-control.com/shipvib.htm

Extractions: DIAGNOSING AND CURING GLOBAL SHIP RESONANCES Michael Bahtiarian, Noise Control Engineering, Inc. ABSTRACT This paper discusses the investigation of a intermittent, but serious vibration problem on an ocean-going vessel. Upon first examination, the problem appeared to be resonance excitation. Typical methods of testing for resonances such as modal impact or shaker tests were not possible due to the size of the test object. Initial data suggested that the ship was vibrating in a cantilevered beam mode with a frequency equal to the shaft rotation rate. A second series of tests confirmed the vibration at the noted frequency, but with a free-free beam mode shape. Structural modifications would require major additions of steel and weight to the ship. After some deliberations, the propulsion system was inspected and mechanical problems were discovered. Repair to the propulsion system was undertaken, and structural modifications were not required. KEYWORDS: Vibration, Shipboard, Natural Frequency, Resonances. INTRODUCTION Shipboard vibration has many forms. For diesel driven vessels, the engines induce large accelerations that travel from the foundation of the engine throughout the ship. In most compartments, this type of vibration normally manifests itself as audible noise. Most shipboard noise problems are actually reduced by controlling vibration. This paper discusses the investigation of a
Active Acoustics : TechnoFirst
Designer and manufacturer of mufflers and headsets with active control of noise and vibrations.
http://www.technofirst.com/us/index_us.htm
Successes: Patents
5,734,649, Data Packet Router. 5,796,849, active noise and Vibration control SystemAccounting for Time Varying Plant Using Residual Signal to Create Probe Signal.
http://www.bbn.com/successes/patents.html

Extractions: Patents Patents protect our substantial intellectual property. Our recent patent awards have been for diverse technologies, ranging from speech and language processing, to networking, medical imaging, and noise control, and we currently have over 100 applications being processed by the U.S. Patent Office. Signaling Apparatus Digital Phase Adjustment Method of Multiplex/Demultiplex Processing of Information and Equipment for Performing the Method Floating Point Processor Employing Counter Controlled Shifting Adaptive Computing System Memory Accessing Switch Network Underwater Sound Source Word Dependent N-best Search Method Electromagnetic Transducer Distributed Resource Management System Using Hashing Operation to Direct Resource Request from Different Processors to the Processor Controlling the Requested Resource Embedded Signaling Generation of Schedules Using a Genetic Procedure Load Cell Electromagnetic Force Generator Active Pneumatic Mount Single Tree Method for Grammar Directed, Very Large Vocabulary Speech Recognizer
Institute Of Noise Control Engineering USA
International Conferences on noise control engineering Proceedings of pastINTER-noise congresses. active 95 Proceedings announcement with a further
http://www.inceusa.org/conferences.asp

Extractions: The 2003 National Conference on Noise Control Engineering will be held at the Renaissance Cleveland Hotel in Cleveland, Ohio on 2003 June 23-25. The conference is being organized by the Institute of Noise Control Engineering of the USA. Click here for More info. (To download info as a 128 KB PDF file, click here
> Applications > Control > Noise And Vibration Control
materials. TechnoFirst Design industrial products using active noiseand vibration control. Ultimate Technologies, Inc. - Develops
http://www.mathtools.net/Applications/Control/Noise_and_Vibration_Control/

Extractions: Mathtools.net Applications Control Noise and Vibration Control ... Email page to friend Acentech - Acoustical consulting firm with over 40 years of experience. Services in architectural acoustics, noise and vibration control, audio/visual systems design and environmental acoustics. Acoustic Sciences Corp. ASC Tube Trap Acoustical Solutions, Inc. - Acoustical Solutions offers acoustical accoustical materials and enclosures for sound control and noise reduction. For use with all types of applications from broadcast and recording, industrial, manufacturing, educational, religious, auditoriums, multi-purpose rooms to residential and gymnasiums. AcoustiFLO - Offers totally integrated air handling technology that reduces noise, controls vibration and directly reduces the operating costs of a new or existing building. Andrea Electronics - Andreas breakthrough patented Digital Super Directional Array (DSDA®) far-field microphone technology cancels background noise and transmits a clear voice signal, even when the speaker is at a distance from the microphone source, enabling a hands-free enhanced PC communicating experience.The Company's patented Active Noise Cancellation (ANC) microphone and Active Noise Reduction (ANR) earphone technologies help toensure the clearest speech in PC and telephony headset applications.. Architectural acoustics and lighting - Architectural acoustics, noise control and architectural lighting definitions and practical concepts introduced by Ph.D.
Lord Active Noise And Vibration Control Systems
Products -
http://www.lordmpd.com/products/nvx.asp
CSA Engineering: Vibration, Precision Motion, Noise Control
Provides engineered solutions for vibration suppression, isolation, very lowfrequency suspension Category Business Energy and Environment noise and Vibration control active Systems. of advanced technologies has enabled innovative products and solutionsfor vibration suppression, precision motion and noise control since 1982.
http://www.csaengineering.com/
Description
active noise cancellation analyzes the individual air pressure waves which makeup a noise, identifying the utilizes a highly engineered control system to
http://www.quietflight-llc.com/description.htm
Order Page For Institute Of Noise Control Engineering
Twovolume set containing 117 technical papers from the 1999 International Symposiumon active control of Sound and Vibration. noise and Vibration control Leo L
http://www.bookmasters.com/marktplc/00726.htm

Extractions: ISBN: Ino2 This searchable CD-ROM contains the 400+ paper Proceedings of INTER-NOISE 2002, the 2002 International Congress and Exposition on Noise Control Engineering and the 27-paper Proceedings of the 2002 Sound Quality Symposium The theme of INTER-NOISE 2002 was Transportation Noise as it relates to automobiles, trucks, motorcycles, off-road vehicles, trains, aircraft, and recreational vehicles. However, PDF file papers on all aspects of noise control engineering are included on the CD-ROM. The CD-ROM also contains key noise policy papers presented at NOISE-CON 2001, an overview of U.S. noise policy published in the 2002 June issue of Noise/News International , and the 12 papers on noise policy, including international noise policy, which were published in a special issue (2001 July-August) of Noise Control Engineering Journal A Microsoft Excel database of key United States noise policy documents is also included.
Low Frequency Noise, Vibration And Active Control
books. online journals. subscribe to Low Frequency. instructions to authors.e-mail Multi-Science. Low Frequency noise, Vibration and active control.
http://www.multi-science.co.uk/lowfreq.htm

Extractions: The considerable and growing interest in the phenomena of low frequency noise and vibration and their powerful effects on man, animals and the environment, spreads across several disciplines; studies of these topics are to be found at present in the periodical literature of acoustics, geophysics, architecture, civil and mechanical engineering, psychology and zoology. This quarterly journal brings together material which otherwise would be scattered: the journal is the cornerstone of the creation of a unified corpus of knowledge on the subject. Among the topics covered by the journal are: sources of infrasound and low frequency noise and vibration: detection, measurement and analysis; propagation of infrasound and low frequency noise in the atmosphere; propagation of vibration in the ground and in structures; perception of infrasound, low frequency noise and vibration by man and animals; effects on man and animals; interaction of low frequency noise and vibration: vibrations caused by noise, radiation of noise from vibrating structures; low frequency noise and vibration control: problems and solutions.
Low Frequency Noise, Vibration And Active Control Volume 20
ondemand papers. Low Frequency noise, Vibration and active control. editor Dr.W. Tempest published quarterly free on-line subscription ISSN 0263-0923.
http://www.multi-science.co.uk/lf_20.htm

Extractions: Danish guidelines on environmental low frequency noise, infrasound and vibration Jorgen Jakobsen In Denmark a set of guidelines for measurement and assessment of environmental low frequency noise, infrasound and vibration was published in 1997 as "Information from the Danish Environmental Protection Agency no. 9/1997" (Miljøstyrelsen ). Recommended measurement methods are specified, and recommended limit values for noise and vibration are given. In this paper a brief description of the measurement methods is given, the recommended limit values are shown, and the background for the measurement and assessment methods is discussed. This paper is an extended summary of "Information from the Danish Environmental Protection Agency No.9/1997" (in Danish) Dynamic Analysis of Delayed Damper System in Engineering Structures Chen Dingyue, Xu Hui andDong Jianjia The delayed damper (DD) is a new active vibration absorption technique which uses time-delayed partial state feedback to generate ideal resonance on a passive vibration absorber. It has many attractive features such as real-time tunability, ease of implementation, and total suppression of vibration for tonal frequency disturbances. In this paper, a major advantage of engineering structures analysis is the reduction of characteristic roots from infinite numbers to finite numbers and consequent simplicity in the dynamic analysis of the controller. The dynamic model principle is employed to design controllers for the structure. The system is examined by simulation. It is shown that engineering structures control application for DD yields better vibration suppression considering the sampled control structure in implementations.
HFM PANEL
noise control active Technique; noise control - Applications; Communicationin Stressful Environment; Voice control. The overall aim
http://www.rta.nato.int/hfm.htm

Extractions: Home Forum Site Map Help ... NMSG Information Management IMC Ongoing Activities Meetings Search Reports Abstracts Full Text History Links Contacts E-mail Vacancies The Mission of the Human Factors and Medicine (HFM) The mission of the Human Factors and Medicine Panel (HFM) is to optimise performance, health, well-being, and safety of the human in operational environments with consideration of affordability. This involves understanding and ensuring the physical, physiological, psychological and cognitive compatibility among military personnel, technological systems, missions, and environments. This is accomplished by: exchange of information, collaborative experiments, and shared field trials. The panel is to maintain expert networks and foster information exchange as well as coordinate with other panels common activities (eg : IST linkage in the field of human information processing, visualization, human computer interface, virtual reality,..).
Science & Technology - Torpedo Stealth (D & I)
noise control techniques using conventional passive control, hybrid activepassivecontrol, fully active control, and innovative acoustic design are of
http://www.onr.navy.mil/sci_tech/engineering/333_mechanics/usea_torpedo.htm
Advanced Materials For Active Noise And Position Control
Advanced Materials for active noise and Position control. Montana StateUniversity Bozeman. For any questions regarding this project
http://www.homepage.montana.edu/~wwwferro/
Publications
24673 Brigham Young University Provo , UT 846024673 , USA Tel +1 801 378 2205FAX +1 801 378 2265 s_sommerfeldt@byu.edu active noise and Vibration control.
http://www.i-ince.org/publications.htm

Extractions: Noise/News International (NNI) Description Noise/News International(ISSN 1021-643X) is a quarterly news magazine published jointly by the International Institute of Noise Control Engineering and the Institute of Noise Control engineering of the USA., Inc. Noise/News International is distributed to the Member Societies of I-INCE and to the members of INCE/USA as a member benefit. SUBSCRIPTIONS: In the USA, the annual subscription rate is USD 50.00, postpaid, which is included in the dues of Members and Associates of INCE/USA. Nonmember subscription rates available upon request. Single copy price is USD 12.50.

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