ES2118093T3 - NOISE CONTROL DEVICE. - Google Patents

NOISE CONTROL DEVICE.

Info

Publication number
ES2118093T3
ES2118093T3 ES91920600T ES91920600T ES2118093T3 ES 2118093 T3 ES2118093 T3 ES 2118093T3 ES 91920600 T ES91920600 T ES 91920600T ES 91920600 T ES91920600 T ES 91920600T ES 2118093 T3 ES2118093 T3 ES 2118093T3
Authority
ES
Spain
Prior art keywords
wave
control device
noise control
signals
phase
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES91920600T
Other languages
Spanish (es)
Inventor
Khosrow Eghtesadi
William John Joseph Hoge
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Noise Cancellation Technologies Inc
Original Assignee
Noise Cancellation Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Noise Cancellation Technologies Inc filed Critical Noise Cancellation Technologies Inc
Application granted granted Critical
Publication of ES2118093T3 publication Critical patent/ES2118093T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2838—Enclosures comprising vibrating or resonating arrangements of the bandpass type
    • H04R1/2842—Enclosures comprising vibrating or resonating arrangements of the bandpass type for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns

Abstract

LA ONDA DE SONIDO RADIADA DE LA SUPERFICIE (UF) DELANTERA DE UN DIAFRAGMA DE DISPOSITIVO ALTAVOZ ES DE POLARIDAD OPUESTA CON RESPECTO A LA RADIADA DE LA SUPERFICIE (UB) POSTERIOR. SI LAS DOS SEÑALES SE COMBINAN DIRECTAMENTE, TENDERAN A CANCELARSE UNA A LA OTRA. UNA RED (5) DE INVERSION DE FASE ACUSTICA SE USA PARA ASEGURAR QUE LA ONDA DE RETROCESO ESTE EN FASE CON LA ONDA FRONTAL, Y LAS SEÑALES COMBINADAS SE USAN PARA CONDUCIR LA ENTRADA DE UNA LINEA DE TRANSMISION DE UN ALTAVOZ.THE RADIATED SOUND WAVE OF THE FRONT SURFACE (UF) OF A SPEAKER DEVICE DIAPHRAGM IS OF OPPOSITE POLARITY WITH RESPECT TO THE REAR SURFACE RADIATE (UB). IF THE TWO SIGNALS ARE COMBINED DIRECTLY, THEY WILL TEND TO CANCEL THE OTHER. AN ACOUSTIC PHASE INVESTMENT NETWORK (5) IS USED TO ENSURE THAT THE BACKWARD WAVE IS IN PHASE WITH THE FRONT WAVE, AND THE COMBINED SIGNALS ARE USED TO CONDUCT THE ENTRY OF A SPEAKER TRANSMISSION LINE.

ES91920600T 1991-04-19 1991-04-19 NOISE CONTROL DEVICE. Expired - Lifetime ES2118093T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/US1991/002731 WO1992019080A1 (en) 1991-04-19 1991-04-19 Improvements in and relating to transmission line loudspeakers
CA002108696A CA2108696A1 (en) 1991-04-19 1991-04-19 Improvements in and relating to transmission line loudspeakers

Publications (1)

Publication Number Publication Date
ES2118093T3 true ES2118093T3 (en) 1998-09-16

Family

ID=25676762

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91920600T Expired - Lifetime ES2118093T3 (en) 1991-04-19 1991-04-19 NOISE CONTROL DEVICE.

Country Status (8)

Country Link
EP (1) EP0580579B1 (en)
JP (1) JPH06508445A (en)
CA (1) CA2108696A1 (en)
DE (1) DE69129664T2 (en)
DK (1) DK0580579T3 (en)
ES (1) ES2118093T3 (en)
HK (1) HK1011163A1 (en)
WO (1) WO1992019080A1 (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3290991B2 (en) * 1994-05-10 2002-06-10 ノイズ キャンセレーション テクノロジーズ インコーポレーテッド Active noise canceling muffler
US6504938B1 (en) * 2000-10-06 2003-01-07 Logitech Europe S.A. Dual-chamber loudspeaker
US10848118B2 (en) 2004-08-10 2020-11-24 Bongiovi Acoustics Llc System and method for digital signal processing
US11431312B2 (en) 2004-08-10 2022-08-30 Bongiovi Acoustics Llc System and method for digital signal processing
US10158337B2 (en) 2004-08-10 2018-12-18 Bongiovi Acoustics Llc System and method for digital signal processing
US8284955B2 (en) 2006-02-07 2012-10-09 Bongiovi Acoustics Llc System and method for digital signal processing
US10701505B2 (en) 2006-02-07 2020-06-30 Bongiovi Acoustics Llc. System, method, and apparatus for generating and digitally processing a head related audio transfer function
US10848867B2 (en) 2006-02-07 2020-11-24 Bongiovi Acoustics Llc System and method for digital signal processing
US10069471B2 (en) 2006-02-07 2018-09-04 Bongiovi Acoustics Llc System and method for digital signal processing
US11202161B2 (en) 2006-02-07 2021-12-14 Bongiovi Acoustics Llc System, method, and apparatus for generating and digitally processing a head related audio transfer function
CA2645852C (en) * 2006-03-15 2013-12-24 Thomas J. Danley Sound reproduction with improved low frequency characteristics
DE102011084567C5 (en) * 2011-10-14 2019-08-14 Eberspächer Exhaust Technology GmbH & Co. KG Active muffler
US9264004B2 (en) 2013-06-12 2016-02-16 Bongiovi Acoustics Llc System and method for narrow bandwidth digital signal processing
US9883318B2 (en) 2013-06-12 2018-01-30 Bongiovi Acoustics Llc System and method for stereo field enhancement in two-channel audio systems
US9906858B2 (en) 2013-10-22 2018-02-27 Bongiovi Acoustics Llc System and method for digital signal processing
US10639000B2 (en) 2014-04-16 2020-05-05 Bongiovi Acoustics Llc Device for wide-band auscultation
US10820883B2 (en) 2014-04-16 2020-11-03 Bongiovi Acoustics Llc Noise reduction assembly for auscultation of a body
US9615813B2 (en) 2014-04-16 2017-04-11 Bongiovi Acoustics Llc. Device for wide-band auscultation
US9479861B2 (en) * 2014-06-26 2016-10-25 Anthony Allen BISSET Compact wideband bass and midrange horn-loaded speaker system
US9564146B2 (en) 2014-08-01 2017-02-07 Bongiovi Acoustics Llc System and method for digital signal processing in deep diving environment
US9638672B2 (en) 2015-03-06 2017-05-02 Bongiovi Acoustics Llc System and method for acquiring acoustic information from a resonating body
JP2018537910A (en) 2015-11-16 2018-12-20 ボンジョビ アコースティックス リミテッド ライアビリティー カンパニー Surface acoustic transducer
US9621994B1 (en) 2015-11-16 2017-04-11 Bongiovi Acoustics Llc Surface acoustic transducer
AU2019252524A1 (en) 2018-04-11 2020-11-05 Bongiovi Acoustics Llc Audio enhanced hearing protection system
WO2020028833A1 (en) 2018-08-02 2020-02-06 Bongiovi Acoustics Llc System, method, and apparatus for generating and digitally processing a head related audio transfer function
CN113504663B (en) * 2021-07-23 2023-04-25 歌尔科技有限公司 Sound production module, sound production module silencing method and intelligent glasses

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5031801A (en) * 1973-07-20 1975-03-28
JPS5789393A (en) * 1980-11-17 1982-06-03 Bose Corp Controller for low end response for loudspeaker system
US4473906A (en) * 1980-12-05 1984-09-25 Lord Corporation Active acoustic attenuator
US4549631A (en) * 1983-10-24 1985-10-29 Bose Corporation Multiple porting loudspeaker systems
US4616731A (en) * 1984-03-02 1986-10-14 Robinson James R Speaker system
US4665549A (en) * 1985-12-18 1987-05-12 Nelson Industries Inc. Hybrid active silencer
US4875546A (en) * 1988-06-02 1989-10-24 Teledyne Industries, Inc. Loudspeaker with acoustic band-pass filter
JPH0787628B2 (en) * 1989-02-22 1995-09-20 株式会社ケンウッド Speaker system for bass reproduction
US5025885A (en) * 1989-07-14 1991-06-25 Bose Corporation Multiple chamber loudspeaker system
JP4862491B2 (en) * 2005-05-25 2012-01-25 東レ株式会社 Flocking piles and flocking products

Also Published As

Publication number Publication date
DE69129664D1 (en) 1998-07-30
WO1992019080A1 (en) 1992-10-29
DE69129664T2 (en) 1998-12-03
EP0580579A1 (en) 1994-02-02
CA2108696A1 (en) 1992-10-20
EP0580579B1 (en) 1998-06-24
EP0580579A4 (en) 1994-06-15
HK1011163A1 (en) 1999-07-02
JPH06508445A (en) 1994-09-22
DK0580579T3 (en) 1999-04-06

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