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Active Noise Control:     more books (72)

Active Noise Control Systems: Algorithms and DSP Implementations (Wiley Series in Telecommunications and Signal Processing) by Sen M. Kuo, Dennis R. Morgan, 1996-01 Active Noise Control (Oxford Engineering Science Series) by M. O. Tokhi, R. R. Leitch, 1992-04-23 Active Noise Control : Fundamentals for Acoustic Design by G. Rosenhouse, 2001 Active Noise Control Primer by Scott D. Snyder, 2000-05-05 Active Control of Noise and Vibration: Presented at the Winter Annual Meeting of the American Society of Mechanical Engineers, Anaheim, California, November 8-13, 1992 (Dsc (Series), V. 38.) by Ga.) American Society of Mechanical Engineers. Winter Meeting (1991 : Atlanta, 1992-11 Active Control of Noise and Vibration by Colin Hansen, Scott Snyder, 1996-11-01 Active Noise and Vibration Control (Advanced Textbooks in Control and Signal Processing) by M. Osman Tokhi, 2010-12-28 Noise-cancelling Headphones: Active Noise Control, Circuitry, Speaker Driver, Destructive Interference, Soundproofing, Lawrence J. Fogel Active Control of Vibration and Noise: Presented at the 1996 Asme International Mechanical Engineering Congress and Exposition, November 17-22, 1996, Atlanta, ... Design Engineering Division), V. 93.) by Ga.) International Mechanical Engineering Congress and Exposition (1996 : Atlanta, 1996-01 Active Control of Vibration and Noise (MD) by Asme Conference Proceedings, 1994-01 Realtime Controller Tuning for Periodic Disturbance Rejection: with Application to Active Noise Control by Charles Kinney, 2009-08-05 Active Noise Control in Supersonic Impinging Jets: Actuator Design, Reduced-Order Modeling by Jae Jeen Choi, 2009-01-06 Active Noise Control (2-volume set) by G. Rosenhouse, 2002-12 Active Control of Noise and Vibration 1992

lists with details

1. Active Noise Control - Wikipedia, The Free Encyclopedia
   Active noise control (ANC) (also known as noise cancellation, active noise reduction (ANR) or antinoise) is a method for reducing unwanted sound.  
   http://en.wikipedia.org/wiki/Active_noise_control
   
   Extractions: From Wikipedia, the free encyclopedia Jump to: navigation search Active noise control (ANC) (also known as noise cancellation active noise reduction (ANR) or antinoise ) is a method for reducing unwanted sound Sound is a pressure wave , which consists of a compression phase and a rarefaction phase. A noise-cancellation speaker emits a sound wave with the same amplitude but with inverted phase (also known as antiphase ) to the original sound. The waves combine to form a new wave, in a process called interference , and effectively cancel each other out - an effect which is called phase cancellation . Depending on the circumstances and the method used, the resulting soundwave may be so faint as to be inaudible to human ears. A noise-cancellation speaker may be co-located with the sound source to be attenuated . In this case it must have the same audio power level as the source of the unwanted sound. Alternatively, the transducer emitting the cancellation signal may be located at the location where sound attenuation is wanted (e.g. the user's ear). This requires a much lower power level for cancellation but is effective only for a single user. Noise cancellation at other locations is more difficult as the three dimensional wavefronts of the unwanted sound and the cancellation signal could match and create alternating zones of constructive and destructive interference. In small enclosed spaces (e.g. the passenger compartment of a car) such global cancellation can be achieved via multiple speakers and feedback microphones, and measurement of the modal responses of the enclosure.

2. Active Noise Control | Ask.com Encyclopedia
   Active noise control (ANC) (also known as noise cancellation, active noise reduction (ANR) or antinoise) is a method for reducing unwanted sound.  
   http://www.ask.com/wiki/Active_noise_control?qsrc=3044

3. Active Noise Control | TripAtlas.com
   Active noise control (ANC) (also known as noise cancellation, active noise reduction (ANR) or antinoise) is a method for reducing unwanted sound.  
   http://tripatlas.com/Active_noise_control

4. Active Noise Control - SFGate Topics
   Active noise control Topic on SFGate.com News and archives about Active noise control, Active noise control Media Photos and Video  
   http://topics.sfgate.com/topics/Active_noise_control

5. NVHmaterials.com - Links Database
   Welcome to the Best Web Page for complete links to information and websites around the world for materials that affect Noise, Vibration, and Harshness (NVH) performance  
   http://www.nvhmaterials.com/nvh/Active_Noise_Control/index.htm
   
   Extractions: Top : Active Noise Control Home Add a Resource Modify a Resource What's New ... Search Active Noise Control FAQ - FAQ's, references, and links to other sites involved with active noise control pop (Added: 11-Jun-2000 Hits: 1463 Rating: 9.33 Votes: 3) Rate It Noise Control - A noise control manufacturers directory including soundproofing, sound barriers, soundproofing material, active noise control, sound proof enclosure, soundproof wall, acoustical foam, acoustical wall panels, industrial noise control, sound absorbers, noise barriers, sound reduction, sound enclosures, and noise barrier. pop (Added: 26-Jan-2004 Hits: 732 Rating: Votes: 0) Rate It Signal Systems Corporation - We specialize in signal processing, noise reduction and active noise control

6. Active Noise Control - On Opentopia, Find Out More About Active Noise Control
   Active noise control (also known as noise cancellation, active noise reduction (ANR) or antinoise) is a method for preventing unwanted sound.  
   http://encycl.opentopia.com/term/Active_noise_control
   
   Extractions: Active noise control (also known as noise cancellation active noise reduction (ANR) or antinoise ) is a method for preventing unwanted sound Contents Sound consists of vibration s in the air , which can be represented as a wave . If a speaker emits a sound whose wave has the same amplitude and the opposite polarity to the original sound, the waves cancel out and the result is no sound at all. A computer analyzes the waveform of the background aural or nonaural noise, then generates a polarity reversed waveform to cancel it out by interference . It does not mean that all frequencies are rotated 180° out of phase (phase shifting). This waveform has identical or directly proportional amplitude to the waveform of the noise, but its polarity (not the phase) is the opposite. This creates destructive interference that reduces the amplitude of the perceived noise. This method differs from passive noise control methods ( soundproofing ) in that a powered system is involved, rather than unpowered methods such as insulation, sound-absorbing ceiling tiles, or automobile

7. Active Noise Control
   Research results and software tools for using smart materials in active noise control. Active noise control and noise cancellation solutions for acoustic problems brought to you by Signal Systems Corporation.  
   http://www.signalsystemscorp.com/ancindex.htm
   
   Extractions: Home Projects Contact Personnel ... ANC Status Active Noise Control quiets offensive noise by using cancellation techniques, or anti-sound. Signal Systems Corporation's mission is to help quiet irritating noises so you can have a more peaceful life. This web site is designed to give the active noise community a common source for information about this technology, its applications and suppliers. Please use the feedback link at the bottom of each page to let us know how we can improve this site.

8. Campanella Associates (Acoustics Consultants) - Active Noise Control
   Campanella Associates is dedicated to making the home, work, institutional and recreational environments pleasant and safe. As acoustical engineers, we provide our clients with  
   http://www.campanellaacoustics.com/anc.htm
   
   Extractions: Active Noise Control or Cancellation (ANC) Many folks have called us to ask about the easibility of ANC in reducing domestic and commercial noise problems. The conventional wisdom seems to be that most noise situations are amenable to an ANC solution. This is false, just as is the notion that the computer is the solution to all calculation and bookkeeping problems, or that computers reduce the consumption of paper. Consider that most general noise problems are 3-dimensional in nature, typically a noisy area where one or more persons work or relax. Some explanation is in order: ANC uses the principle of destructive interference, where the noise sound wave is sensed with a microphone. This signal is amplified and fed to a loudspeaker which emits sound of the same type but of opposite phase with respect to the original sound wave. Such cancellation can occur at only one lpoint in space. In the case of one-dimensional propagation down a duct, the sound wave for all intents is "stopped" at that point since the sound from the loudspeaker proceeds one - dimensionally down the duct, matching the original noise waves precisely along the way. (upstream toward the sound source, the sound wave is doubled, but that is of no concern.

9. Active Noise Control FAQ
   Provides answers to common questions about active noise control including a discussion of popular misconceptions about what active noise control can and cannot do.  
   http://www.chrisruckman.com/ancfaq.htm
   
   Extractions: What is an FAQ, you say? It's a "Frequently Asked Questions list." The Internet supports thousands of "newsgroups" - discussion forums covering every imaginable topic. When certain questions tend to get asked over and over again, it's common to assemble the answers into a list for easy reference.

10. Industrial Acoustics Company (IAC) - Leading Supplier Of Noise And Acoustic Cont
    Suppliers of noise and acoustic barriers, panels, doors, structures and test facilities.  
    http://www.industrialacoustics.com/uk/
    
    Extractions: Noise and acoustic control products, structures, test facilities and aero-engine testing solutions From its Global Headquarters in Winchester UK, IAC, a world leader, offers imaginative solutions to an extraordinarily wide range of noise pollution and sound quality problems. Industrial Acoustics Company supplies a large and diverse noise control product range to over 50 countries throughout the Americas, Europe, Africa, the Middle East and Pacific Rim. We supply 9 market sectors worldwide: Manufacturing and Process Industries

11. Active Noise Control-Active Noise Control Manufacturers, Suppliers And Exporters
    Active Noise Control Manufacturers Active Noise Control Suppliers Directory Find a Active Noise Control Manufacturer and Supplier. Choose quality Active Noise Control  
    http://www.alibaba.com/showroom/active-noise-control.html

12. Vibrations & Acoustics Laboratories | Vibration & Acoustics Laboratories
    Research at Virginia Tech.  
    http://www.val.me.vt.edu/
    
    Extractions: Leaders in Research and Technology in Sound and Vibration Aircraft landing gear model for wind-tunnel noise testing Cessna 150 aircraft fuselage for noise treatment testing Commercial autonomous underwater vehicle Instrumented mannequin for characterizing headsets Setting up array measurement in anechoic chamber Instrumenting aircraft fuselage interior Students working on autonomous ATV project Autonomous ATV automatic braking linkage Underwater instrumentation testing Acoustic array instrumentation setup Three VAL students received high honors at the North Carolina Acoustical Society of America [NC-ASA] chapter meeting in March 2010. Read More... Professor Ricardo Buridisso completes his experimental testing to help validate modelling of sonic boom propagation in buildings. The video of the sonic boom simulation can be found here Read More...

13. Active Noise Control Equipment On ThomasNet.com
    Welcome to the premier industrial Noise Control Equipment Active resource. A wide variety of manufacturers, distributors and service companies are featured in our extensive  
    http://www.thomasnet.com/products/noise-control-equipment-active-53824801-1.html

14. Applied Acoustics - Active Noise Control
    When quarter 5. Course code VTA130. Credits 7.5 ECTS. Exam written and/or oral. Contact Wolfgang Kropp. Course Page  
    http://www.ta.chalmers.se/education.php?page=crs_anc

15. Noise Control And Sound Control Products, Sound Proofing, Noise Enclosures And A
    Supplier of noise and sound control products for industry. Provides details of products and applications.  
    http://www.enoisecontrol.com
    
    Extractions: Home Contact Us Order Info Clients ... Related Videos Applications Menu Acoustical Consultant Industrial Noise Control HVAC Noise Control Noise Ordinance Products Menu Sound Curtains Sound Enclosures Sound Barrier Wall Outdoor Sound Curtains ... Soundproof Case Studies Chiller Noise Hydraulic Pump Noise Air Compressor Noise Quiet Room ... Our engineered products, capabilities, knowledge and expertise make us an ideal partner for your noise control project. Call our company today to further discuss your particular noise application. Call Today at 888.213.4711 Email Us (info@enoisecontrol.com) Fax Us at 317.774.1911 Ask a Question Sound Curtains HVAC Noise Control Outdoor Sound Curtain ... Sound Enclosure Typical Applications (click to view)

16. Active-noise-control.com - Hosted By One.com Webhosting
    One.com is an innovative supplier of Web hosting services. We offer domain, homepage and unlimited email accounts at some of the best prices on the market without compromising on  
    http://active-noise-control.com/
    
    Extractions: active-noise-control.com is hosted by One.com er en innovativ leverandør af webhotel og webhosting-ydelser. Vi tilbyder eget domæne, hjemmeside og ubegrænset antal e-mail-adresser til konkurrencedygtige priser uden at gå på kompromis med kvalitet og sikkerhed. Priser fra 9,00 kr. One.com er en innovativ leverandør av webhotell og webhostingsytelser. Vi har løsninger spesielt egnet for mindre virksomheter og privatmarkedet, med stor grad av brukervennlighet, stabilitet og sikkerhet. 125MB Webhotell 10 kr / måned.

17. Active Noise Control System With A Helmholtz Resonator - Patent EP1313090
    An active noise control system (26) includes an error microphone (28), a speaker (29) and an active resonator (30) which communicate with an ANC controller (32). The active  
    http://www.freepatentsonline.com/EP1313090.html

18. Envirotech Systems Pvt. Ltd.
    Manufacturer of sound testing chambers and acoustic enclosures.  
    http://www.envirotechsystems.tradeindia.com
    
    Extractions: With an objective to provide high quality range of products at highly competitive prices, Envirotech Systems Pvt. Ltd. started its operations in the year 1997. We, as a professionally managed organization, have achieved specialization in designing and developing wide range of acoustic enclosures for various applications. With our consistent effort and continuous dedication towards quality and customers satisfaction, we have become a reliable manufacturer in Acoustics like Acoustic Enclosures, Room Acoustic, Sound Testing Chamber, Anechoic Chambers, Diesel Generator Room Acoustic, Acoustic Louvers, Acoustic Barriers, Sound Proof Curtains, Noise Testing Booth, RF Shielded Enclosures/ Rooms, Studio Acoustic and many more. Engineering excellence and stringent quality control norms at each stage of production, we ensure optimal performance of our range. We provide excellent after sales services across the country and maintain a huge inventory of spare parts to meet immediate bulk requirements of the same. We also arrange training program for your operational team.

19. Active Noise Control Demo | Vibration & Acoustics Laboratories
    With this shareware, you can test and experiment with a very simple active noise control system at home. The purpose of this experiment is to demonstrate active noise control.  
    http://www.val.me.vt.edu/research/activenoisecontrol
    
    Extractions: Home With this shareware, you can test and experiment with a very simple active noise control system at home. The purpose of this experiment is to demonstrate active noise control. The basic principle of active noise control is to cancel a sound wave (noise) by emitting a secondary opposite (out-of-phase) sound wave (control wave). The active noise control principle is illustrated in the figure below. In the real world, the implementation of active noise control is much more complex due to phase and spatial matching, efficient transducers, system identification, etc., as explained in the paper "Active Control of Sound and Vibration," by C. R. Fuller and A. H. Flotow. The shareware that you can download, sends a single frequency wave (sine wave at 1000 Hz) to your right speaker. This sound wave represents the noise to be cancelled. By activating the control (pushing on the control button in the program), sound wave of equal amplitude and opposite phase is sent to the left speaker to cancel the noise. Note that for an effective demonstration, the two speakers should face each other and be close to one another (see picture above). If desired, the speakers can then be moved apart and the resulting effect on the sound cancellation observed. This share was tested using "Labtec LCS-800" speakers; the sound cancellation obtained was large and appreciable. Note that the control results depends highly on the quality of speakers used. Please make sure that the volume of each speaker is set to be identical. Also notice that this experiment is more impressive at medium-high volume (please be careful not to overdrive your speakers and ears!).

20. Active Noise Control - US Patent 4876722 Abstract
    Patent Abstract An active noise control system for reducing the amount of noise propagated along a duct comprises a microphone mounted in the wall of the duct for detecting  
    http://www.patentstorm.us/patents/4876722.html

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