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Acoustic abatement method and apparatus 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04R-001/28
출원번호 US-0313958 (1972-12-11)
발명자 / 주소
  • Wanke Ronald L. (1960 N. Lincoln Park West Chicago IL 60614)
인용정보 피인용 횟수 : 50  인용 특허 : 0

초록

An acoustic receiver, amplifier and transmitter generate an anti wave which is in-phase and of mirror symmetry with respect to a propagating acoustic wave. Coherent propagation means such as an acoustic duct of particular dimensions redirects and/or converts the acoustic wave and the anti wave, whic

대표청구항

A method for attenuating a predetermined range of frequencies within an acoustic wave propagating along different vectors through a medium, comprising the steps of: generating an anti wave limited to only said predetermined range of frequencies and of mirror symmetry with respect to said acoustic wa

이 특허를 인용한 특허 (50)

  1. Lee, Peng, Acoustic attenuator.
  2. Drzewiecki Tadeusz M. (Rockville MD) Niemczuk John B. (Kensington MD) Fuller Christopher R. (Norfolk VA) Thomas Russell H. (Hampton VA) Burdisso Ricardo A. (Blacksburg VA), Acousto-fluidic driver for active control of turbofan engine noise.
  3. Warnaka Glenn E. (Erie PA) Poole Lynn A. (State College PA) Tichy Jiri (State College PA), Active acoustic attenuator.
  4. Angelini Theophile A. (Marseilles FRX) Nayrole Bernard J. P. (Marseilles FRX) Jessel Maurice J. (Marseilles FRX) Canevet Georges (Marseilles FRX) Mangiante Gerard A. (Marseilles FRX) Carbone Bernard , Active acoustic sound absorber device.
  5. Chaplin George B. B. (Colchester GB2) Smith Roderick A. (Colchester GB2) Bearcroft Robert G. (Ipswich GB2), Active attenuation of recurring sounds.
  6. Swinbanks Malcolm A. (Cambridge GB2), Active control of sound waves.
  7. Swinbanks Malcolm Alexander (Glasgow SC), Active control of sound waves.
  8. Acton Elizabeth (Cambridge GB2) Cargill Alexander M. (Derby GB2) Ross Colin F. (Cambridge GB2) Eatwell Graham P. (Cambridge GB2), Active control of unsteady motion phenomena in turbomachinery.
  9. Acton Elizabeth (Cambridge GB2) Cargill Alexander M. (Derby GB2) Ross Colin F. (Cambridge GB2) Eatwell Graham P. (Cambridge GB2), Active control of unsteady motion phenomena in turbomachinery.
  10. Hersh Alan S. ; Walker Bruce E. ; Heidelberg Larry, Active control source cancellation and active control Helmholtz resonator absorption of axial fan rotor-stator interaction noise.
  11. McWilliam, Richard D.; McLean, Ian R., Active dipole inlet using drone cone speaker driver.
  12. McLean Ian R.,CAX, Active noise attenuation system.
  13. Nguyen, Quoc Hoai; Nagorski, Arkadiusz Bartlomiej; Fung, Eric YuHang; Watson, Eric Tracy, Active noise cancelation systems and devices.
  14. York, Stanley J.; Cho, Heung Ki, Active noise cancellation apparatus and method.
  15. Kato Masahiko (Nukata JPX) Katou Masanori (Toyoake JPX) Kuwakado Satosi (Nukata JPX) Tanaka Katsuyuki (Nishio JPX) Ito Koji (Anjo JPX), Active silencer.
  16. Lehringer Frank Juergen (Wernsdorf DEX), Active sound damper.
  17. Russell Steve F. (Ames IA) Doherty John F. (Ames IA), Communication device apparatus and method utilizing pseudonoise signal for acoustical echo cancellation.
  18. Powell, Brandon Flowers; Tersmette, Trevor Andrew; Spencer, Craig Bradley, Conformal inlet apparatus for a gas turbine engine.
  19. Pounds, William E.; Carson, Oliver Benjamin, Dissipative system for increasing audio entropy thereby diminishing auditory perception.
  20. Swigert Charles J. (Pacific Palisades CA), Electronic cancelling of acoustic traveling waves.
  21. Vanderveen, James Kenneth; Haworth, Roy, Environmentally protected microphone for an active noise control system.
  22. McLean, Ian R.; Vanderveen, James K.; Xia, Zhouxuan, Environmentally robust noise attenuation system.
  23. Butler,George W.; Reed,David H.; Calkins,Frederick T.; Davis,Christopher L.; Mabe,James H., High frequency jet nozzle actuators for jet noise reduction.
  24. Eriksson Larry J. (Madison WI) Allie Mark C. (Oregon WI) Hoops Richard H. (Stoughton WI), Hybrid active silencer.
  25. Rice Edward J. ; Walker Bruce E. ; Hersh Alan S., Hybrid mode-scattering/sound-absorbing segmented liner system and method.
  26. Chaplin ; George Brian Barrie ; Smith ; Roderick Alan, Improvements in and relating to active sound attenuation.
  27. Vanderveen, James K.; Xia, Zhouxuan, Integrated active noise attenuation system and fluid reservoir.
  28. McLean,Ian R.; Vanderveen,James K., Integrated and active noise control inlet.
  29. Ross Colin F. (Cambridge GB2), Method and apparatus for active sound control.
  30. Fetescu Mircea,CHX, Method and apparatus for keeping clean and/or cleaning a gas turbine using externally generated sound.
  31. Andre Pierre A. (Paris FRX) Thevenin Jean-Claude P. H. P. (Saint-Maur-Des-Fosses FRX) Girault Jean-Pierre Y. B. (Dammarie Les Lys FRX) Richter Gerhard (Boissise Le Roi FRX), Method and device for reducing the noise of turbo-machines.
  32. Andre Pierre A. (Paris FRX) Thevenin Jean-Claude P. H. P. (Saint.-Maur-des-Fosses FRX) Girault Jean-Pierre Y. B. (Dammarie les Lys FRX) Richter Gerhard (Boissise le Roi FRX), Method and device for reducing the noise of turbo-machines.
  33. Ephraim Gutmark ; Christian Oliver Paschereit CH; Wolfgang Weisenstein CH, Method of controlling thermoacoustic vibrations in a combustion system, and combustion system.
  34. Swinbanks Malcolm A. (Pentlands Close GB2), Methods and apparatus for reducing noise by cancellation.
  35. Chiara,Brian, Modular active noise air filter speaker and microphone assembly.
  36. Shumard, Brent Robert; Canfield, Gregory H.; Gilbert, Mark, Offset cartridge microphones.
  37. Shumard, Brent Robert; Canfield, Gregory H.; Gilbert, Mark, Offset cartridge microphones.
  38. Alexander,Paul; Habura,Chirstopher; Truitt,Patrick W; Truschel,William A, Pressure support system with active noise cancellation.
  39. Parker, Ian; Naylor, Ken; Keery, Fred; Butler, Christopher M, Safety system.
  40. Swinbanks Malcolm A. (Cambridge GB2), Signal processing systems.
  41. Cain John J. (Phoenix AZ) Barnes Dennis (Mesa AZ) Dye David A. (Phoenix AZ), Single cavity automobile muffler.
  42. Norris Elwood G., Sound reduction method and system for jet engines.
  43. Mellow, Tim, Sound sponge for loudspeakers.
  44. Hawkins, Gary F.; O'Brien, Michael J., Sound suppression material and method.
  45. Stuart, Philip Edward Arthur, Speaker retention assembly for an active noise control system.
  46. Suzuki, Hironobu, Straddle-type vehicle and combustion controller for straddle-type vehicle.
  47. Brough Anthony D. (Hamilton OH), System and method for actively controlling pressure pulses in a gas turbine engine combustor.
  48. Schnetzka,Harold Robert; Eichelberger, Jr.,E. Curtis; Nemit, Jr.,Paul, System and method for noise attenuation of screw compressors.
  49. Hogle, Joseph Alan; Wise, Michael Glynn; Shaver, Steven Mark; Austin, Michael Eugene, Systems and methods for suppressing pressure waves using corrective signal.
  50. Deffenbaugh, Danny; McKee, Robert; Nored, Marybeth, Tunable choke tube for pulsation control device used with gas compressor.
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