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Feedback control 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H03F-001/32
출원번호 US-0372472 (1982-04-28)
발명자 / 주소
  • Bose Amar G. (Wayland MA)
출원인 / 주소
  • Bose Corporation (Framingham MA 02)
인용정보 피인용 횟수 : 51  인용 특허 : 0

초록

Headphones have a small cavity between the diaphragm and the ear canal with a microphone in the cavity closely adjacent to the diaphragm providing a feedback signal that is combined with the input electrical signal to be reproduced by the headphones to provide a combined signal that is power amplifi

대표청구항

In a feedback control system for providing a controlled output signal in response to an input control signal having components including amplifying means having an input and output for amplifying a signal applied to said input and arranged in a closed loop with feedback means for coupling said outpu

이 특허를 인용한 특허 (51)

  1. Mejia, Jorge Patricio; Dillon, Harvey Albert; Fisher, Michael John Amiel, Accoustically transparent occlusion reduction system and method.
  2. Bostock,Peter, Acoustic detector with noise cancellation.
  3. McIntosh Jason D., Active noise cancellation aircraft headset system.
  4. Waite, Thomas C.; Kelkar, Atul G., Active noise control system.
  5. Sapiejewski, Roman, Active noise reduction microphone placing.
  6. Christoph, Markus; Wurm, Michael; Perkmann, Michael, Active noise reduction system.
  7. Gauger, Jr., Daniel M., Adapted audio masking.
  8. Saunders, William Richard; Vaudrey, Michael Allen, Adaptive personal active noise reduction system.
  9. Saunders,William Richard; Vaudrey,Michael Allen, Adaptive personal active noise reduction system.
  10. Saunders William Richard ; Vaudrey Michael Allen, Adaptive personal active noise system.
  11. Short, William R., Adjusting dynamic range of an audio system.
  12. Mondragon, Christopher K.; Greig, Nigel; Scholten, Edward; Moody, Roy; Simmonds, Paul; Clarke, Elaine; Darbonne, Thomas Allen, Airline passenger seat modular user interface device.
  13. Hsieh, Pei-Wen, Audio processing device and audio processing method.
  14. Wurtz, Michael, Automatic turn-on and turn-off control for battery-powered headsets.
  15. Donaldson, Mark; Steyn, Andre; Guiu, Pierre Victor Manuel; Givernet, Damien Oliver; Sim, William James, Component for noise reducing earphone.
  16. Berge Wolfgang zum,DEX, Device for reducing noise.
  17. Armstrong, Stephen W.; Sykes, Frederick E.; Brown, David R.; Ryan, James G., Digital hearing aid system.
  18. Armstrong,Stephen W.; Sykes,Frederick E.; Brown,David R.; Ryan,James G., Digital hearing aid system.
  19. Bender, Paul T., Electromagnetic interference filter.
  20. McClanahan, John B., Headset incorporating an integral light.
  21. McClanahan,John B., Headset incorporating an integral light.
  22. Yamkovoy, Paul G., Headset power source managing.
  23. Wurtz,Michael J., Headset with auxiliary input jack(s) for cell phone and/or other devices.
  24. Wurtz, Michael J., Headset with auxiliary input(s) for cell phone and/or other devices.
  25. Wurtz, Michael J., Headset with auxiliary input(s) for cell phone and/or other devices.
  26. Peker, Arkadiy; Smith, Jr., Kevin Mark; Korcharz, Dror, Hysteretic current mode control converter with low, medium and high current thresholds.
  27. Darlington, Paul; Azmi, Yacine; Lefebvre, Mickael Bernard Andre; Hewitt, Oliver Michael James, In-ear device incorporating active noise reduction.
  28. Katzer, Roman; Hartung, Klaus, Masking based gain control.
  29. Carme Christian E. (Marseille FRX) Roure Alain R. (Marseille FRX), Method and apparatus for attentuating external origin noise reaching the eardrum, and for improving intelligibility of e.
  30. Fang, Xiaoling; Davis, Keith L.; Johnson, Martin R., Method and apparatus for minimizing latency in digital signal processing systems.
  31. Stanley, Gerald R., Motional feedback system.
  32. Andrea Douglas ; Topf Martin, Noise cancellation apparatus.
  33. Hsieh, Pei-Wen, Noise cancellation device and noise cancellation method.
  34. Donaldson, Mark; Givernet, Damien Oliver, Noise cancellation earphone.
  35. Mishan,Steven, Noise reducing headphones with sound conditioning.
  36. Fang, Xiaoling; Nilsson, Michael J., Noise reduction apparatus and method.
  37. Wiggins, Daniel C.; Burgess, Thomas Ezekiel; Yamamoto, Matthew Fumio, Noise reduction headphone with two differently configured speakers.
  38. Bergeron, Mark; Crump, Stephen; Gauger, Jr., Daniel M., Noise reduction headset.
  39. Twiney Robert C. (Northampton GB2) Salloway Anthony J. (Northampton GB2), Noise reduction system.
  40. Beard, Terry, Personal hearing control system and method.
  41. Yamkovoy, Paul G., Power supply voltage-based headset function control.
  42. Fuller, Graeme Colin, Realisation of controller transfer function for active noise cancellation.
  43. Sutardja, Pantas, Servo loop employing correction vector from a secondary disturbance sensor to minimize correlation between servo loop error and disturbance sensor output.
  44. Sutardja,Pantas, Servo loop employing correction vector from a secondary disturbance sensor to minimize correlation between servo loop error and disturbance sensor output.
  45. Hung, Chia-Yu; Yeh, Tsung-Li; Tu, Yi-Chang, Signal processing apparatus.
  46. Fang,Xiaoling; Wilson,Gerald; Giles,Brad, Subband acoustic feedback cancellation in hearing aids.
  47. Marash, Joseph; Berdugo, Baruch, Super directional beamforming design and implementation.
  48. Wurtz, Michael J., System and method for adaptive active noise reduction.
  49. Joseph Marash IL; Baruch Berdugo IL, System, method and apparatus for cancelling noise.
  50. Chen, Walter Y, Using multi-level pulse width modulated signal for real time noise cancellation.
  51. Sim, William James; Greig, Nigel; Beck, Robert David; Nicklin, Mark, Vehicle media distribution system using optical transmitters.
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