ES469121A1 - Perfeccionamientos en sistemas para derivar una senal de sa-lida de bajo ruido de dos senales alimentadas - Google Patents

Perfeccionamientos en sistemas para derivar una senal de sa-lida de bajo ruido de dos senales alimentadas

Info

Publication number
ES469121A1
ES469121A1 ES469121A ES469121A ES469121A1 ES 469121 A1 ES469121 A1 ES 469121A1 ES 469121 A ES469121 A ES 469121A ES 469121 A ES469121 A ES 469121A ES 469121 A1 ES469121 A1 ES 469121A1
Authority
ES
Spain
Prior art keywords
microphones
signals
room reverberation
cancelling
signal
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
Application number
ES469121A
Other languages
English (en)
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.)
AT&T Corp
Original Assignee
Western Electric Co 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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of ES469121A1 publication Critical patent/ES469121A1/es
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/105—Appliances, e.g. washing machines or dishwashers
    • G10K2210/1053—Hi-fi, i.e. anything involving music, radios or loudspeakers
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3018—Correlators, e.g. convolvers or coherence calculators
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/50—Miscellaneous
    • G10K2210/505—Echo cancellation, e.g. multipath-, ghost- or reverberation-cancellation

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Complex Calculations (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Noise Elimination (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

Perfeccionamientos en sistemas para derivar una señal de salida de bajo ruido de dos señales alimentadas caracterizados porque se disponen medios correlacionadores que actúan sobre la primera y segundas señales alimentadas para proporcionar una salida dependiendo de la correlación de frecuencia entre las mismas y para derivar una señal de salida cuya amplitud se controla dependiendo de la correlación.
ES469121A 1977-04-27 1978-04-25 Perfeccionamientos en sistemas para derivar una senal de sa-lida de bajo ruido de dos senales alimentadas Expired ES469121A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/791,418 US4066842A (en) 1977-04-27 1977-04-27 Method and apparatus for cancelling room reverberation and noise pickup

Publications (1)

Publication Number Publication Date
ES469121A1 true ES469121A1 (es) 1979-09-16

Family

ID=25153657

Family Applications (1)

Application Number Title Priority Date Filing Date
ES469121A Expired ES469121A1 (es) 1977-04-27 1978-04-25 Perfeccionamientos en sistemas para derivar una senal de sa-lida de bajo ruido de dos senales alimentadas

Country Status (14)

Country Link
US (1) US4066842A (es)
JP (1) JPS5919357B2 (es)
AU (1) AU519308B2 (es)
BE (1) BE866295A (es)
CA (1) CA1110768A (es)
CH (1) CH629350A5 (es)
DE (1) DE2818204C2 (es)
ES (1) ES469121A1 (es)
FR (1) FR2389280A1 (es)
GB (1) GB1595260A (es)
IL (1) IL54572A (es)
IT (1) IT1203179B (es)
NL (1) NL184449C (es)
SE (1) SE431280B (es)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2830837C2 (de) * 1977-07-15 1983-06-09 Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa Verfahren und Vorrichtung zur Messung der Kennwerte eines Lautsprechers
US4087633A (en) * 1977-07-18 1978-05-02 Bell Telephone Laboratories, Incorporated Dereverberation system
CA1123955A (en) * 1978-03-30 1982-05-18 Tetsu Taguchi Speech analysis and synthesis apparatus
JPS5715597A (en) * 1980-07-02 1982-01-26 Nippon Gakki Seizo Kk Microphone device
JPS5717027A (en) * 1980-07-03 1982-01-28 Hitachi Ltd Vibration reducing device of electric machinery
JPS5852780Y2 (ja) * 1980-07-19 1983-12-01 パイオニア株式会社 マイクロホン
JPS5763937A (en) * 1980-10-06 1982-04-17 Nippon Telegr & Teleph Corp <Ntt> Noise suppression system
US4381428A (en) * 1981-05-11 1983-04-26 The United States Of America As Represented By The Secretary Of The Navy Adaptive quantizer for acoustic binary information transmission
EP0091926B1 (en) * 1981-10-21 1987-08-26 Sound Attenuators Limited Improved method and apparatus for cancelling vibrations
DE3374514D1 (en) * 1982-01-27 1987-12-17 Racal Acoustics Ltd Improvements in and relating to communications systems
JPS58160996A (ja) * 1982-03-19 1983-09-24 日本電信電話株式会社 雑音抑圧方式
JPS58181099A (ja) * 1982-04-16 1983-10-22 三菱電機株式会社 音声識別装置
US4485484A (en) * 1982-10-28 1984-11-27 At&T Bell Laboratories Directable microphone system
US4741038A (en) * 1986-09-26 1988-04-26 American Telephone And Telegraph Company, At&T Bell Laboratories Sound location arrangement
JP2646210B2 (ja) * 1987-05-27 1997-08-27 ヤマハ株式会社 電気音響的残響支援装置
FR2674346A1 (fr) * 1991-03-19 1992-09-25 Thomson Csf Procede de soustraction de bruit pour vehicule sous-marin.
DE4307688A1 (de) * 1993-03-11 1994-09-15 Daimler Benz Ag Verfahren zur Geräuschreduktion für gestörte Sprachkanäle
US5400409A (en) * 1992-12-23 1995-03-21 Daimler-Benz Ag Noise-reduction method for noise-affected voice channels
US5633935A (en) * 1993-04-13 1997-05-27 Matsushita Electric Industrial Co., Ltd. Stereo ultradirectional microphone apparatus
US5774562A (en) * 1996-03-25 1998-06-30 Nippon Telegraph And Telephone Corp. Method and apparatus for dereverberation
WO2001053982A1 (en) * 2000-01-18 2001-07-26 National Research Council Of Canada Parallel correlator archtitecture
EP1519618B1 (de) * 2003-09-24 2011-11-02 Hewlett-Packard Development Company, L.P. Verfahren und Kommunikationsgerät mit Mitteln zur Entstörung von Audiosignalen
WO2005109951A1 (en) * 2004-05-05 2005-11-17 Deka Products Limited Partnership Angular discrimination of acoustical or radio signals
US7508948B2 (en) * 2004-10-05 2009-03-24 Audience, Inc. Reverberation removal
US8180067B2 (en) * 2006-04-28 2012-05-15 Harman International Industries, Incorporated System for selectively extracting components of an audio input signal
US8036767B2 (en) 2006-09-20 2011-10-11 Harman International Industries, Incorporated System for extracting and changing the reverberant content of an audio input signal
US8767975B2 (en) * 2007-06-21 2014-07-01 Bose Corporation Sound discrimination method and apparatus
US8611554B2 (en) * 2008-04-22 2013-12-17 Bose Corporation Hearing assistance apparatus
KR20140010468A (ko) * 2009-10-05 2014-01-24 하만인터내셔날인더스트리스인코포레이티드 오디오 신호의 공간 추출 시스템
US8761410B1 (en) * 2010-08-12 2014-06-24 Audience, Inc. Systems and methods for multi-channel dereverberation
US9078077B2 (en) 2010-10-21 2015-07-07 Bose Corporation Estimation of synthetic audio prototypes with frequency-based input signal decomposition
US9635474B2 (en) 2011-05-23 2017-04-25 Sonova Ag Method of processing a signal in a hearing instrument, and hearing instrument
US9307321B1 (en) 2011-06-09 2016-04-05 Audience, Inc. Speaker distortion reduction
US9877134B2 (en) * 2015-07-28 2018-01-23 Harman International Industries, Incorporated Techniques for optimizing the fidelity of a remote recording
CN105448302B (zh) * 2015-11-10 2019-06-25 厦门快商通科技股份有限公司 一种环境自适应的语音混响消除方法和系统
CN106686477A (zh) * 2017-03-10 2017-05-17 安徽声讯信息技术有限公司 一种适用远距离的记录转写的无源麦克风
CN107068162B (zh) * 2017-05-25 2021-03-05 北京小鱼在家科技有限公司 一种语音增强方法、装置及终端设备

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3440350A (en) * 1966-08-01 1969-04-22 Bell Telephone Labor Inc Reception of signals transmitted in a reverberant environment
US3644674A (en) * 1969-06-30 1972-02-22 Bell Telephone Labor Inc Ambient noise suppressor
US3662108A (en) * 1970-06-08 1972-05-09 Bell Telephone Labor Inc Apparatus for reducing multipath distortion of signals utilizing cepstrum technique
US3786188A (en) * 1972-12-07 1974-01-15 Bell Telephone Labor Inc Synthesis of pure speech from a reverberant signal
US3794766A (en) * 1973-02-08 1974-02-26 Bell Telephone Labor Inc Delay equalizing circuit for an audio system using multiple microphones

Also Published As

Publication number Publication date
CH629350A5 (de) 1982-04-15
IL54572A0 (en) 1978-07-31
FR2389280A1 (fr) 1978-11-24
NL7804497A (nl) 1978-10-31
NL184449C (nl) 1989-07-17
FR2389280B1 (es) 1983-08-19
IL54572A (en) 1980-07-31
AU3534378A (en) 1979-10-25
IT7867945A0 (it) 1978-04-26
GB1595260A (en) 1981-08-12
SE7804451L (sv) 1978-10-28
SE431280B (sv) 1984-01-23
NL184449B (nl) 1989-02-16
BE866295A (fr) 1978-08-14
DE2818204C2 (de) 1984-04-19
US4066842A (en) 1978-01-03
DE2818204A1 (de) 1978-11-02
CA1110768A (en) 1981-10-13
AU519308B2 (en) 1981-11-26
IT1203179B (it) 1989-02-15
JPS5919357B2 (ja) 1984-05-04
JPS53135204A (en) 1978-11-25

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19990405