FI870642A0 - Förbättrat larmdämpningssystem - Google Patents

Förbättrat larmdämpningssystem

Info

Publication number
FI870642A0
FI870642A0 FI870642A FI870642A FI870642A0 FI 870642 A0 FI870642 A0 FI 870642A0 FI 870642 A FI870642 A FI 870642A FI 870642 A FI870642 A FI 870642A FI 870642 A0 FI870642 A0 FI 870642A0
Authority
FI
Finland
Prior art keywords
noise reduction
reduction system
improved noise
improved
reduction
Prior art date
Application number
FI870642A
Other languages
English (en)
Finnish (fi)
Other versions
FI92118B (sv
FI92118C (sv
FI870642A (sv
Inventor
David Edward Borth
Ira Alan Gerson
Richard Joseph Vilmur
Philip Jerome Smanski
Original Assignee
Motorola 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
Priority claimed from US06/750,942 external-priority patent/US4628529A/en
Priority claimed from US06/750,572 external-priority patent/US4630304A/en
Priority claimed from US06/750,941 external-priority patent/US4630305A/en
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of FI870642A0 publication Critical patent/FI870642A0/sv
Publication of FI870642A publication Critical patent/FI870642A/sv
Publication of FI92118B publication Critical patent/FI92118B/sv
Application granted granted Critical
Publication of FI92118C publication Critical patent/FI92118C/sv

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L2021/02168—Noise filtering characterised by the method used for estimating noise the estimation exclusively taking place during speech pauses
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/27—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the analysis technique
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/43—Signal processing in hearing aids to enhance the speech intelligibility
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
    • H04R25/505—Customised settings for obtaining desired overall acoustical characteristics using digital signal processing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Noise Elimination (AREA)
FI870642A 1985-07-01 1987-02-16 Förbättrat larmdämpningssystem FI92118C (sv)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US06/750,942 US4628529A (en) 1985-07-01 1985-07-01 Noise suppression system
US75094285 1985-07-01
US06/750,572 US4630304A (en) 1985-07-01 1985-07-01 Automatic background noise estimator for a noise suppression system
US75057285 1985-07-01
US75094185 1985-07-01
US06/750,941 US4630305A (en) 1985-07-01 1985-07-01 Automatic gain selector for a noise suppression system
US8600990 1986-05-05
PCT/US1986/000990 WO1987000366A1 (en) 1985-07-01 1986-05-05 Noise supression system

Publications (4)

Publication Number Publication Date
FI870642A0 true FI870642A0 (sv) 1987-02-16
FI870642A FI870642A (sv) 1987-02-16
FI92118B FI92118B (sv) 1994-06-15
FI92118C FI92118C (sv) 1994-09-26

Family

ID=27419404

Family Applications (1)

Application Number Title Priority Date Filing Date
FI870642A FI92118C (sv) 1985-07-01 1987-02-16 Förbättrat larmdämpningssystem

Country Status (6)

Country Link
EP (1) EP0226613B1 (sv)
KR (1) KR940009391B1 (sv)
DE (1) DE3689035T2 (sv)
FI (1) FI92118C (sv)
HK (1) HK19297A (sv)
WO (1) WO1987000366A1 (sv)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2243274A (en) * 1990-02-20 1991-10-23 Switchtoll Limited Subtracting ambient noise from total noise during recording or broadcasting
DE69121312T2 (de) * 1990-05-28 1997-01-02 Matsushita Electric Ind Co Ltd Geräuschsignalvorhersagevorrichtung
KR960005741B1 (ko) * 1990-05-28 1996-05-01 마쯔시다덴기산교 가부시기가이샤 음성신호부호화장치
EP0763811B1 (en) * 1990-05-28 2001-06-20 Matsushita Electric Industrial Co., Ltd. Speech signal processing apparatus for detecting a speech signal
EP0459362B1 (en) * 1990-05-28 1997-01-08 Matsushita Electric Industrial Co., Ltd. Voice signal processor
EP0459384B1 (en) * 1990-05-28 1998-12-30 Matsushita Electric Industrial Co., Ltd. Speech signal processing apparatus for cutting out a speech signal from a noisy speech signal
JP3033061B2 (ja) * 1990-05-28 2000-04-17 松下電器産業株式会社 音声雑音分離装置
US5657422A (en) * 1994-01-28 1997-08-12 Lucent Technologies Inc. Voice activity detection driven noise remediator
US5768473A (en) * 1995-01-30 1998-06-16 Noise Cancellation Technologies, Inc. Adaptive speech filter
US6118758A (en) 1996-08-22 2000-09-12 Tellabs Operations, Inc. Multi-point OFDM/DMT digital communications system including remote service unit with improved transmitter architecture
US6771590B1 (en) 1996-08-22 2004-08-03 Tellabs Operations, Inc. Communication system clock synchronization techniques
GB9714001D0 (en) * 1997-07-02 1997-09-10 Simoco Europ Limited Method and apparatus for speech enhancement in a speech communication system
US7440498B2 (en) 2002-12-17 2008-10-21 Tellabs Operations, Inc. Time domain equalization for discrete multi-tone systems
DK1068704T3 (da) 1998-04-03 2012-09-17 Tellabs Operations Inc Filter til impulssvarforkortning, med yderligere spektrale begrænsninger, til multibærebølgeoverførsel
US6795424B1 (en) 1998-06-30 2004-09-21 Tellabs Operations, Inc. Method and apparatus for interference suppression in orthogonal frequency division multiplexed (OFDM) wireless communication systems
GB9821385D0 (en) * 1998-10-01 1998-11-25 British Broadcasting Corp Improvements relating to measuring channel state from a received signal and discriminating digital values from a received signal,suitable for use in cofdm
US6519486B1 (en) 1998-10-15 2003-02-11 Ntc Technology Inc. Method, apparatus and system for removing motion artifacts from measurements of bodily parameters
US7991448B2 (en) 1998-10-15 2011-08-02 Philips Electronics North America Corporation Method, apparatus, and system for removing motion artifacts from measurements of bodily parameters
FR2794323B1 (fr) * 1999-05-27 2002-02-15 Sagem Procede de suppression de bruit
FR2794322B1 (fr) * 1999-05-27 2001-06-22 Sagem Procede de suppression de bruit
CN1406372A (zh) * 2000-02-29 2003-03-26 艾利森公司 用于降低空间移动信号源噪声的方法和系统
US6529868B1 (en) * 2000-03-28 2003-03-04 Tellabs Operations, Inc. Communication system noise cancellation power signal calculation techniques
EP1170728A1 (en) * 2000-07-05 2002-01-09 Alcatel System for adaptively reducing noise in speech signals
JP2002149200A (ja) 2000-08-31 2002-05-24 Matsushita Electric Ind Co Ltd 音声処理装置及び音声処理方法
JP3566197B2 (ja) 2000-08-31 2004-09-15 松下電器産業株式会社 雑音抑圧装置及び雑音抑圧方法
DE10308483A1 (de) 2003-02-26 2004-09-09 Siemens Audiologische Technik Gmbh Verfahren zur automatischen Verstärkungseinstellung in einem Hörhilfegerät sowie Hörhilfegerät
EP2254352A3 (en) * 2003-03-03 2012-06-13 Phonak AG Method for manufacturing acoustical devices and for reducing wind disturbances
US7127076B2 (en) 2003-03-03 2006-10-24 Phonak Ag Method for manufacturing acoustical devices and for reducing especially wind disturbances
EP1614322A2 (en) * 2003-04-08 2006-01-11 Philips Intellectual Property & Standards GmbH Method and apparatus for reducing an interference noise signal fraction in a microphone signal
US7454332B2 (en) 2004-06-15 2008-11-18 Microsoft Corporation Gain constrained noise suppression
CN101091209B (zh) 2005-09-02 2010-06-09 日本电气株式会社 抑制噪声的方法及装置
EP1770685A1 (en) * 2005-10-03 2007-04-04 Maysound ApS A system for providing a reduction of audiable noise perception for a human user
DE102006051071B4 (de) 2006-10-30 2010-12-16 Siemens Audiologische Technik Gmbh Pegelabhängige Geräuschreduktion
GB0725110D0 (en) * 2007-12-21 2008-01-30 Wolfson Microelectronics Plc Gain control based on noise level
CN102016995B (zh) * 2008-07-29 2013-07-10 Lg电子株式会社 用于处理音频信号的设备及其方法
JP2010122617A (ja) 2008-11-21 2010-06-03 Yamaha Corp ノイズゲート、及び収音装置
US8538043B2 (en) 2009-03-08 2013-09-17 Lg Electronics Inc. Apparatus for processing an audio signal and method thereof
KR102372188B1 (ko) * 2015-05-28 2022-03-08 삼성전자주식회사 오디오 신호의 잡음을 제거하기 위한 방법 및 그 전자 장치
CN112863534B (zh) * 2020-12-31 2022-05-10 思必驰科技股份有限公司 噪声音频消除方法、语音识别方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989897A (en) * 1974-10-25 1976-11-02 Carver R W Method and apparatus for reducing noise content in audio signals
US4185168A (en) * 1976-05-04 1980-01-22 Causey G Donald Method and means for adaptively filtering near-stationary noise from an information bearing signal
US4135590A (en) * 1976-07-26 1979-01-23 Gaulder Clifford F Noise suppressor system
US4208548A (en) * 1977-07-19 1980-06-17 Orban Associates, Inc. Apparatus and method for peak-limiting audio frequency signals
US4340778A (en) * 1979-11-13 1982-07-20 Bennett Sound Corporation Speaker distortion compensator
JPS56122243A (en) * 1980-02-29 1981-09-25 Victor Co Of Japan Ltd Noise reduction system
JPS56152337A (en) * 1980-04-24 1981-11-25 Victor Co Of Japan Ltd Noise reduction system

Also Published As

Publication number Publication date
FI92118B (sv) 1994-06-15
KR940009391B1 (ko) 1994-10-07
WO1987000366A1 (en) 1987-01-15
DE3689035T2 (de) 1994-01-20
KR880700539A (ko) 1988-03-15
DE3689035D1 (de) 1993-10-21
EP0226613A1 (en) 1987-07-01
EP0226613A4 (en) 1988-06-14
FI92118C (sv) 1994-09-26
HK19297A (en) 1997-02-20
FI870642A (sv) 1987-02-16
EP0226613B1 (en) 1993-09-15

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Legal Events

Date Code Title Description
BB Publication of examined application
FG Patent granted

Owner name: MOTOROLA INC.

MA Patent expired