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Active Noise Control: more books (72)

Smart Foam for Active Vibration and Noise Control: Hybrid Noise and Vibration Control by Wael Akl, 2010-06-19
Preceeding of NoiseCon/ASME NCAD 2008: Flow Acoustics Active and Passive Noise Control Structural Acoustics
Adaptive Feedforward Controllers for Active Noise Control (Berichte Aus Der Electrotechnik) by Biao Liu, 2001-04-27
Development of adaptive based active noise control ear defenders for the resource industries (Report / Minerals and Energy Research Institute of Western Australia) by J Pan, 1996
Active noise and vibration control, 1990: Presented at the Winter Annual Meeting of the American Society of Mechanical Engineers, Dallas, Texas, November 25-30, 1990 (NCA)
Survey on active noise control (Survey report) by Richard K Miller, 1989
Active Noise Control Systems : Algorithms and DSP Implementations (Wiley Series in Telecommunications and Signal Processing) by Dennis R. Morgan Sen M. Kuo, 1980
Active noise control of low speed fan rotor-stator modes (SuDoc NAS 1.15:107458) by NASA, 1997
An evaluation of active noise control in a cylindrical shell (SuDoc NAS 1.15:89090) by Richard J. Silcox,
Active noise control: System identification issues and noise cancellation using adaptive filtering : research project by Su-u Hwang, 1991
Low speed, 2-D rotor/stator active noise control at the source demonstration under contract NAS3-26618 (SuDoc NAS 1.26:204149) by NASA, 1997
ACTIVE NOISE CONTROL SYSTEMS by Sen Kuo, 1980
High temperature sensor/microphone development for active noise control final technical reports (SuDoc NAS 1.26:195214) by NASA, 1994
Performance of optimized actuator and sensor arrays in an active noise control system (SuDoc NAS 1.15:110281) by NASA, 1996

lists with details

The World Of Sound And Vibration
Specialist company in northern Europe offering acoustics, noise and vibration services for industry, community, building, automotive and product development customers.
http://www.ingemansson.com
LORD Corporation - Adhesives, Coatings, Vibration And Motion Control, And Magnet
Products from a manufacturer of active noise and vibration control systems for passenger aircraft.
http://www.lord.com
ANC News
Active Noise Control News. Selected events in Active Noise Control Digisonix has been reorganized after Nelson Industries was bought by Cummins Engine.
http://www.signalsystemscorp.com/anc_news.htm

Extractions: Home Projects Contact Personnel ... Up Selected events in Active Noise Control: Digisonix has been re-organized after Nelson Industries was bought by Cummins Engine. The focus of Digisonix has migrated from HVAC noise reduction to internal combustion exhaust noise reduction. The technical staff has reduced in size. Cymer, a leading supplier of excimer light sources used in semiconductor manufacturing, has completed its acquistion of ACX (Active Control eXperts), a leading developer of active vibration reduction products. ACX will be focused on reducing nano-scale vibration in next generation semiconducter capital equipment. Before focusing on semiconducter manufacturing applications, ACX's commerical plans included vibration reduction solutions for sporting equipment (bats, snowboards, etc.). More information can be found at ACX Labs web site: ACX Website
Active Noise Control Hearing Protection | HEARing CRC
It has been observed that most people do not like wearing hearing protectors (earmuffs) either in the workplace and/or during recreational activities.
http://www.hearingcrc.org/research/projects/r363

Extractions: Search this site: Image: Program: Project area: R3.6: Comfort, safety and intelligibility Project-ID: Project Status: Ongoing It has been observed that most people do not like wearing hearing protectors (earmuffs) either in the workplace and/or during recreational activities. While most individuals understand the risks involved due to inadequate hearing protection in noisy environments, reasons for not wearing earmuffs include: This project aims: to develop more effective hearing protectors that reduce many of these issues, and to assist our commercial partners in development of hearing protection products.
Acoustic Standards Provides Commercial Soundproofing And Noise Controls Products
Supplier of a range of sound control products for commercial, industrial, home or office applications.
http://acousticstandards.com/

Extractions: Home Products Client List Company For over 25 years, we have provided our customers with competitive rates and exceptional acoustical products. We pride ourselves on FAST delivery and making sure you get EXACTLY what you need. Our knowledgeable staff can guide you to the best solutions at the most reasonable cost. Whether you're a Contractor, Architect, Facilities Manager, or Homeowner, we can help you. Our seasoned team has worked on a wide variety of jobs, including: gymnasiums, multipurpose rooms, auditoriums, office buildings, home theaters, recording studios, institutional and industrial projects. So call us today...you are sure to benefit from our TWO DECADES of sound proofing and noise reduction experience! Products Acoustic Foam - SONEX
Active Noise Control FAQ V1996-03-14
From ruckman@xis.com (Dr. Chris Ruckman) Newsgroups alt.sci.physics.acoustics, comp.dsp Subject Active Noise Control FAQ v199603-14 Date Fri, 15 Mar 96 015030 GMT
http://www.faqs.org/faqs/active-noise-control-faq/
Active Noise Control Using Phased-array Active Resonators - US 5778081
An active noise control system includes sensors 16,26 which detects noise 114 and provides electronic signals to an active noise control (ANC) controller 20. The
http://www.patents.com/active-noise-control-using-phased-array-active-resonators
Bosco Italia INSONORIZZAZIONE - Insonorizzazione Industriale, Acustica, Silenzia
Italian company offering diagnosis, soundproofing and sound absorbing services in the fields of aeronautics, motoring, energy, road building and railways.
http://www.boscoitalia.it/default_eng.asp
Active Noise Control
Introduction Passive suppression of lowfrequency noise or vibration has numerous disadvantages, mainly because of the volume of the absorbers.
http://home.mit.bme.hu/~sujbert/active.html

Extractions: Passive suppression of low-frequency noise or vibration has numerous disadvantages, mainly because of the volume of the absorbers. By the usage of signal processors it has became possible to utilize different active noise control methods. These are based on the phenomenon of the destructive interference. A "secondary" noise has to be generated, which suppresses the "primary" (i.e. the original) noise at the properly situated microphones. The whole problem has both acoustical and control aspects. In some cases, if the secondary source can be implemented near to the primary source (e.g. a ventilation duct), a single loudspeaker - microphone pair is enough. In other cases, if the noise source is not concentrated, and the suppression in an enclosure has to be achieved (e.g. an airplane), more loudspeakers and microphones are utilized. Active noise control is a new research and development direction at our department. However, the knowledge-base in measurement, system identification and signal processing helps us to obtain new results in this field.
NVH Technologies
Supplier of active noise cancellation and active vibration cancellation solutions that reduce noise, vibration, and harshness in indoor settings.
http://nvhtechnologies.com
Active Noise Control
Some New Developments in Active Noise Control Some New Developments in Active Noise Control DARPA AirCoupled Acoustic Sensor Workshop at Crystal City, Virginia, August 24-25
http://www.darpa.mil/mto/archives/workshops/sono/presentations/signalsep.pdf
Control Theory
Brief introduction to the feedback theory in plain text. Addresses infinite dimension systems, active noise control, non-linear systems and related applications.
http://www.math.uwaterloo.ca/AM_Dept/research/control.shtml

Extractions: /* Changed to use separate display and positioning CSS March 28 2007 */ @import url("/AM_Dept/supportFiles/cssFiles/layout/positioning2Col.css"); /* Changed to use separate display and positioning CSS March 28 2007 */ @import url("/coreTemplates/CSSFiles/display/fontDefaults.css"); @import url("/coreTemplates/CSSFiles/display/MathExtraFonts.css"); @import url("/coreTemplates/CSSFiles/print/MathPrint.css") print; @import url('/AM_Dept/supportFiles/cssFiles/AMath.css'); @import url("/coreTemplates/CSSFiles/mobile/MathMobile.css") handheld; Search Math uwaterloo.ca In general terms, control theory can be described as the process of influencing the behaviour of a physical system to achieve a desired goal, primarily through the use of feedback . It is important in a diverse range of scientific and engineering disciplines including such things as the design of robotic systems, the positioning of communication satellites, the reduction of noise and vibration in structures, the control of so-called smart materials, and the regulation of biological systems. Current research includes the following topics: Infinite-dimensional systems: Infinite dimensional systems arise in the control of systems modelled by partial differential equations or delay differential equations . The goal of the research is to investigate whether control systems with boundary control and/or point sensing have desirable mathematical properties such as being well-posed and stable. Results such as these are of practical importance because they facilitate the design of controllers for these systems.
Active Noise Control - Programs - NRC-CNRC
Institutional links. Lefthand Menu. About NRC; Business Opportunities and Services; Our Research. Areas of Research; Research Programs; Research Projects; Discoveries
http://www.nrc-cnrc.gc.ca/eng/programs/iar/noise-control.html

Extractions: Canada [View all News for NRC-IAR] IAR has developed expertise in the field of active noise control. The areas of activity include the use of reciprocal and direct techniques for the measurement of sound transmission through structures, vibro-acoustic modelling of structures, and active noise control using piezoelectric actuators. Activities in active noise control are focused on noise reduction in aircraft. Experiments are underway on a full-scale aircraft fuselage to verify computer models developed for predicting both open and closed loop sound pressure levels in an aircraft cabin. In the experiments, control algorithms, including adaptive schemes, are implemented in real time using discrete time compensator models and a PC with an analog I/O data acquisition and control board.
Applied Acoustics - Active Noise Control
Active Noise Control. Applied Acoustics Education Course Pages Active Noise Control. General Course Information. Lecturer Wolfgang Kropp. Assistant Jonas Svensson Lab. assistant
http://www.ta.chalmers.se/education.php?page=cpg_anc
Silentium
Come to hear about our groundbreaking Development Active Noise Control innovations at
http://www.silentium.com/

Extractions: Call Us @ Generating a good feature that will differentiate your products from your competitors is not easy! Think how easier it will become for your sales force to sell a product that produces less noise then the competition… “Silentium helped us reduce the noise level in our Cooker Hoods by 50%.We now have a major USP that will definitely help us differentiate our products, ease our sales procedure and increase our sales…” Lei Ming, King Bright Home appliances Research clearly demonstrates that chronic exposure to high levels of noise affects not only our hearing but also our stress levels and productivity, and ultimately, our physical and mental health. If your product produces Noise, Silentium will remove most of it and enable an aquarium Sensation to your products… Contact Us Free Promotion Message cforms contact form by delicious:days "Silentium helped us optimize our Server Racks, We were suffering from great noise levels. After embedding the active noise reduction technology our server became almost Silent!!!"
Publications On Active Noise And Vibration Control -- Scott C. Douglas
I have been involved in the development of several DSPbased active noise control systems, including a personalized, ``boom-box''-style noise control system that I helped develop
http://lyle.smu.edu/~douglas/pubanvc.html

Extractions: Active noise control, and its cousin, active vibration control, attempt to cancel an unwanted ``noise'' acoustical wave by injecting an equal-but-opposite ``anti-noise''acoustical wave into the medium, thereby attenuating the wave via destructive interference. The origins of ANVC date back to at least 1936, when P. Leug patented the idea for sound control. It tooks nearly fifty years, however, to obtain what might be called successful ANVC, due to the level of electronic precision required to create an anti-noise signal with any great fidelity. Today, anti-noise headsets abound (I have a very cute set of Sony earbud-style `phones from Japan); these are mostly analog systems. Large-scale quieting requires the use of adaptive digital signal processing technology in all but the simplest acoustic environments. I began my study of ANVC as a summer hire at SRI International, Menlo Park, CA, in 1992. While working in the Acoustics and Radar Technology Laboratory, I helped develop the algorithms and guide software code developers to implement a simple one-input, one-output, one-error active noise control system that illustrated some of the advantages that simple adaptive processing has over more-costly off-line calibration methods. I also developed the multichannel extensions of the algorithms and wrote an internal SRI report that helped others to design a real-time multichannel active noise control system for reverberant room noise control. After joining the University of Utah, I remained as a consultant to SRI, developing normalized LMS algorithms for multichannel active noise control and studying simplified
Active Noise Control - DiracDelta Science & Engineering Encyclopedia
Active Noise Control Science and Engineering Encyclopedia
http://www.diracdelta.co.uk/science/source/a/c/active noise control/source.html
ASA 147th Meeting Lay Language Papers -Active Noise Control
Active Noise Control Kenneth Cunefare ken.cunefare@me.gatech.edu Department of Mechanical Engineering Georgia Institute of Technology. Special Lay-Language Paper for the
http://www.acoustics.org/press/147th/active-noise.htm

Extractions: May 2004 Active noise control, the suppression of an undesired sound by the action of another sound, has had a long and not entirely painless development arc over the past 70 years. From its genesis in the 1930s, to the current state with consumer products on the market, the development of active noise control has closely paralleled and depended upon the advancement of low-cost electronics. The basic elements of an active noise control system include one or more microphones to sense the noise over some location of interest and a means to produce an appropriately tailored sound field that acts as a "control field." The control field is usually created through the action of a control system connected to loudspeakers. Applications of the concept have included control of noise produced by industrial fans, suppression of noise in heating, ventilation, and air conditioning ducts, reduction of vehicle exhaust sounds, creation of "quiet zones" within vehicle interiors, reduction of the noise levels inside aircraft and spacecraft launch fairings, and the now almost commonplace active noise control headsets in aviation and consumer use.
Active Noise Control
The aim of Advances in Acoustics and Vibration is to act as a platform for dissemination of innovative and original research and development work in the area of acoustics and
http://www.hindawi.com/journals/aav/2008/350943.html

Extractions: Received 16 June 2008; Accepted 16 June 2008 Active noise control generally aims at reducing an unwanted and unpleasant sound referred to as the noise. The general idea is very simple. However, there are many problems related to the acoustic phenomena as well as control limitations. Thus, the problem is still exciting and attracts attention of a number of scientists originating from different scientific disciplines. Rapid development of technology and extensive research allow for manufacturing sensors and actuators of more advantegous properties, designing more robust and effective algorithms, and finally performing succesful applications in different noise pollutted areas. The aim of the special issue is just to present recent advances in active noise control and its applications. I would like to thank all the authors who accepted my invitation and decided to share their work with a wide circle of readers, what the open-access journal offers. The papers published in this issue were peer-reviewed by independent experts. I appreciate help of the experts very much. Even four reviews per paper where made. Therefore, the eight papers which are finally included in the issue are of very high quality. Below I am barely announcing main topics discussed in the issue.
Active Noise Control
Active Noise Control . Architectures and Application Potentials . Shawn Steenhagen Applied Signal Processing, Inc. 3 Marsh Court
http://www.danvillesignal.com/files/compdsp_Steenhagen_ActiveNoiseControl.ppt

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