[특허]Noise suppression system

Noise suppression system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H03B-029/00
출원번호	US-0507365 (1990-04-09)
발명자 / 주소	Cain John J. (Phoenix AZ) Chait Jamie (Chandler AZ) Dye David (Phoenix AZ) Barnes Dennis (Mesa AZ)
출원인 / 주소	Active Noise and Vibration Technologies, Inc. (Phoenix AZ 02)
인용정보	피인용 횟수 : 65 인용 특허 : 0

초록 ▼

A noise cancellation system, comprising a symmetrical assembly of microphone inputs is disclosed. A controller receives the output of the microphone assembly and generates an electrical cancellation signal having a polarity opposite the polarity of a portion of a noise to be cancelled and a magnitude equal to the magnitude of the portion of the noise to be cancelled. An actuator receives the electrical cancellation signal and outputs an audio cancellation signal.

대표청구항 ▼

A personal noise cancellation system to reduce undesired noise for an individual which system comprises: (a) an acoustic structure intended to provide a localized zone of noise cancellation for a single individual with the acoustic structure in the vicinity of the individual; (b) an acoustic actuator having an output to emit an audio cancellation signal in a direction towards the individual to reduce said undesired noise in response to a received electrical cancellation signal which acoustic actuator is supported by said acoustic structure; (c) audio input means to sense undesired noise receivable by said individual and produce an output for cancellation; and (d) a noise cancellation controller to receive the output of the audio input means and generate said electrical cancellation signal for the acoustic actuator; wherein said audio input means comprises: (i) an elongated audio input mixing chamber extending transversely of the direction of output of the acoustic actuator to average a plurality of audio input signals received therein; (ii) an array of audio input points to said elongated audio input chamber which audio input points are distributed in said transverse direction of output of the acoustic actuator and are designed to receive audio input signals from said direction; (ii) at least one microphone acoustically coupled to said elongated chamber to receive a mixed and averaged audio input therefrom; and wherein said audio input chamber is substantially enclosed to shield its volume from said cancellation signal, is disposed around the acoustic actuator output and is cooperative therewith to define a cancellation region at a location removed from said audio input means in the direction towards the individual.

이 특허를 인용한 특허 (65)

Varadan Vijay K. (State College PA) Varadan Vasundara V. (State College PA) Bao Xiao-Qi (State College PA) Carney Kenneth B. (Granville OH) Olinger John L. (Newark OH) Coffey Fred S. (Newark OH), Active noise control using piezoelectric sensors and actuators.
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Kuo, Sen M.; Liu, Lichuan, Apparatus, system and method for noise cancellation and communication for incubators and related devices.
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Kuo, Sen M.; Liu, Lichuan, Apparatus, system and method for noise cancellation and communication for incubators and related devices.
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Torres, Wade P.; Easterbrook, David; Bender, Paul T.; Warkentin, David J.; Isabelle, Steven H.; Struzik, Ryan C., Arraying speakers for a uniform driver field.
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Pryzby,Eric M.; Block,Rory L., Audio network for gaming machines.
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Douglas S. Brungart, Delay based active noise cancellation for magnetic resonance imaging.
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Kuo, Sen M., Electronic pillow for abating snoring/environmental noises, hands-free communications, and non-invasive monitoring and recording.
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Lesley, Paul M.; Glenn, Robert, Gaming machine chair and wagering game systems and machines with a gaming chair.
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Loose,Timothy C.; Pryzby,Eric M.; Rothschild,Wayne H.; Pacey,Larry J., Gaming machine environment having controlled audio and visual media presentation.
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Pryzby, Eric M.; Schwartz, Richard T., Gaming machine environment having controlled audio and visual media presentation.
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Loose, Timothy C.; Pryzby, Eric M.; Rothschild, Wayne H.; Pacey, Larry J., Gaming machine environment having controlled audio media presentation.
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Rothschild, Wayne H.; Kopera, Thomas M., Gaming machine system having a gesture-sensing mechanism.
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Paz Barahona,Francisco Jose; Loose,Timothy C., Gaming machine with ambient noise attenuation.
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Bonney, James; Pryzby, Eric M., Gaming machine with surround sound features.
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Bonney, James; Pryzby, Eric M., Gaming machine with surround sound features.
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Nordman, Dennis, Gaming system having a plurality of adjacently arranged gaming machines and a mechanical moveable indicator operable to individually indicate the gaming machines.
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Loose,Timothy C.; Pryzby,Eric M.; Rothschild,Wayne H., Gaming system with surround sound.
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Gagner, Mark B.; Kelly, Sean; Massing, Scott A.; Pacey, Larry J.; Smith, Jesse; Velu, Muthu, Gesture fusion.
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Aoki, Dion K.; Gronkowski, Timothy T.; Jaffe, Joel R.; Loose, Timothy C., Gesture sensing enhancement system for a wagering game.
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Takada, Naoki; Nakashima, Fumiaki; Ishikawa, Takao; Nagasawa, Takahiko; Ito, Yasuyuki; Yoshikawa, Junpei, Headrest device and sound collecting device.
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Yamada, Tomomi, Headrest for dental treatment chair and dental treatment chair.
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Silzle, Andreas; Heise, Ulrik; Varga, Stefan; Lang, Matthias; Hellmuth, Oliver, Headrest speaker arrangement.
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Eriksson Urban,SEX, Hearing protector adaptable to chair.
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William C. Hardy, Intracranial noise suppression apparatus.
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Schwarz, Andrea, Magnetic resonance apparatus with multiple microphones for improving clarity of audio signals for a patient.
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Yang, Whoe Sun, Magnetic resonance imaging apparatus and control method thereof.
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Davis, Mark Charles, Managing a sound system.
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Caillet, Julien; Marrot, Franck, Method and an active device for treating noise on board a vehicle, and a vehicle provided with such a device.
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Gardner William A. (6950 Yount St. Yountville CA 94599), Method and apparatus for intracranial noise suppression.
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Bechtold, Mario; Oppelt, Ralph, Method for local reduction of the operating noise produced by a medical diagnostic or therapy device, and medical diagnostic or therapy device having a device for implementing such a method.
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Van Hout James E. (Auburn Hills MI) Mather Jack G. (Walled Lake MI) Madaj David J. (Ann Arbor MI), Methods of and systems for speaker equalization in automotive vehicles having convertible tops.
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Montazemi, Peman; Zekavati, Shaghayegh; Mitolo, Massimo, Noise abatement system for dental procedures.
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Andrea Douglas ; Topf Martin, Noise cancellation apparatus.
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Asao, Yoshifumi; Kano, Hiroyuki; Higashida, Masaaki; Maeda, Tsuyoshi; Ezaki, Toshihiro, Noise reduction device.
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Asao, Yoshifumi; Maeda, Tsuyoshi, Noise reduction device.
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Carme Christian,FRX ; Roure Alain,FRX, Personal active noise cancellation method and device having invariant impulse response.
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Wertz, Duane; Shridhar, Vasant, Quiet zone control system.
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Cohen, Daniel E., Sound and vibration transmission device.
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Kaneda, Hideo; Kishi, Naotaka; Shiina, Noboru, Speaker system with a plurality of openings in side walls of each of two speaker boxes.
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Marash, Joseph; Berdugo, Baruch, Super directional beamforming design and implementation.
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Shridhar, Vasant; Wertz, Duane, System for active noise control based on audio system output.
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Wiegand, Richard J., System for sensor sensitivity enhancement and method therefore.
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Torres, Wade, Transitioning between arrayed and in-phase speaker configurations for active noise reduction.
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Torres, Wade P., Transitioning between arrayed and in-phase speaker configurations for active noise reduction.
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Thomas, Alfred; Shimabukuro, Jorge L.; Prohl, Anthony, Wagering game with multi-point gesture sensing device.
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Bleich, Charles R; Canterbury, Stephen A; Pryzby, Eric M; Rasmussen, James M; Wurz, Norman R, Wagering games using multi-level gaming structure.
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Noise suppression system 원문보기

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