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GB2394391B - A system for reducing the background noise on a telecommunication transmission - Google Patents

A system for reducing the background noise on a telecommunication transmission

Info

Publication number
GB2394391B
GB2394391B GB0224189A GB0224189A GB2394391B GB 2394391 B GB2394391 B GB 2394391B GB 0224189 A GB0224189 A GB 0224189A GB 0224189 A GB0224189 A GB 0224189A GB 2394391 B GB2394391 B GB 2394391B
Authority
GB
United Kingdom
Prior art keywords
reducing
background noise
telecommunication transmission
telecommunication
transmission
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 - Fee Related
Application number
GB0224189A
Other versions
GB2394391A (en
GB0224189D0 (en
Inventor
Richard Ormson
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.)
NEC Technologies UK Ltd
Original Assignee
NEC Technologies UK Ltd
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 NEC Technologies UK Ltd filed Critical NEC Technologies UK Ltd
Priority to GB0224189A priority Critical patent/GB2394391B/en
Publication of GB0224189D0 publication Critical patent/GB0224189D0/en
Publication of GB2394391A publication Critical patent/GB2394391A/en
Application granted granted Critical
Publication of GB2394391B publication Critical patent/GB2394391B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • 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
    • 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
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17857—Geometric disposition, e.g. placement of microphones
    • 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
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
    • 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
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
    • 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
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • 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
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G10K2210/1081—Earphones, e.g. for telephones, ear protectors or headsets
    • 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
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G10K2210/1082—Microphones, e.g. systems using "virtual" microphones
    • 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
    • G10K2210/3044—Phase shift, e.g. complex envelope processing
    • 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
    • G10K2210/321—Physical
    • G10K2210/3226—Sensor details, e.g. for producing a reference or error signal
    • 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
    • G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
    • G10L2021/02165—Two microphones, one receiving mainly the noise signal and the other one mainly the speech signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2410/00—Microphones
    • H04R2410/05—Noise reduction with a separate noise microphone

Landscapes

  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Quality & Reliability (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Telephone Function (AREA)
GB0224189A 2002-10-17 2002-10-17 A system for reducing the background noise on a telecommunication transmission Expired - Fee Related GB2394391B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0224189A GB2394391B (en) 2002-10-17 2002-10-17 A system for reducing the background noise on a telecommunication transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0224189A GB2394391B (en) 2002-10-17 2002-10-17 A system for reducing the background noise on a telecommunication transmission

Publications (3)

Publication Number Publication Date
GB0224189D0 GB0224189D0 (en) 2002-11-27
GB2394391A GB2394391A (en) 2004-04-21
GB2394391B true GB2394391B (en) 2006-04-12

Family

ID=9946099

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0224189A Expired - Fee Related GB2394391B (en) 2002-10-17 2002-10-17 A system for reducing the background noise on a telecommunication transmission

Country Status (1)

Country Link
GB (1) GB2394391B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE485583T1 (en) * 2005-08-02 2010-11-15 Koninkl Philips Electronics Nv IMPROVEMENT OF SPEECH UNDERSTANDABILITY IN A MOBILE COMMUNICATIONS DEVICE BY CONTROLLING THE FUNCTION OF A VIBRATOR DEPENDENT ON THE BACKGROUND SOUND
US20080025523A1 (en) * 2006-07-28 2008-01-31 Sony Ericsson Mobile Communications Ab System and method for noise canceling in a mobile phone headset accessory
JP2008035356A (en) 2006-07-31 2008-02-14 Ricoh Co Ltd Noise canceller, sound collecting device having noise canceller, and mobile phone having noise canceller
US20090170550A1 (en) * 2007-12-31 2009-07-02 Foley Denis J Method and Apparatus for Portable Phone Based Noise Cancellation
GB201615538D0 (en) 2016-09-13 2016-10-26 Nokia Technologies Oy A method , apparatus and computer program for processing audio signals
US12165624B2 (en) * 2020-05-21 2024-12-10 Nippon Telegraph And Telephone Corporation Noise canceling system and noise canceling method
CN113223538B (en) * 2021-04-01 2022-05-03 北京百度网讯科技有限公司 Voice wake-up method, apparatus, system, device and storage medium

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0595550A (en) * 1991-10-01 1993-04-16 Nec Corp Noise eliminating circuit for conference telephone
GB2269968A (en) * 1992-08-14 1994-02-23 British Broadcasting Corp Method and apparatus for attenuating an unwanted signal in a mix of signals
JPH09331377A (en) * 1996-06-12 1997-12-22 Nec Corp Noise cancellation circuit
EP0898266A2 (en) * 1997-08-22 1999-02-24 Nokia Mobile Phones Ltd. A method and an arrangement for attenuating noise in a space by generating antinoise
JPH11164389A (en) * 1997-11-26 1999-06-18 Matsushita Electric Ind Co Ltd Adaptive noise canceller device
JPH11161294A (en) * 1997-11-26 1999-06-18 Kanda Tsushin Kogyo Co Ltd Voice signal transmitting device
JPH11298595A (en) * 1998-04-10 1999-10-29 Mitsubishi Electric Corp Communication device
DE19955889A1 (en) * 1999-11-20 2001-05-23 Siemens Ag Mobile telephone with interference noise compensation incorporates device for displacement of phase of interference signal
WO2001056328A1 (en) * 2000-01-28 2001-08-02 Telefonaktiebolaget Lm Ericson (Publ) System and method for dual microphone signal noise reduction using spectral subtraction

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0595550A (en) * 1991-10-01 1993-04-16 Nec Corp Noise eliminating circuit for conference telephone
GB2269968A (en) * 1992-08-14 1994-02-23 British Broadcasting Corp Method and apparatus for attenuating an unwanted signal in a mix of signals
JPH09331377A (en) * 1996-06-12 1997-12-22 Nec Corp Noise cancellation circuit
EP0898266A2 (en) * 1997-08-22 1999-02-24 Nokia Mobile Phones Ltd. A method and an arrangement for attenuating noise in a space by generating antinoise
JPH11164389A (en) * 1997-11-26 1999-06-18 Matsushita Electric Ind Co Ltd Adaptive noise canceller device
JPH11161294A (en) * 1997-11-26 1999-06-18 Kanda Tsushin Kogyo Co Ltd Voice signal transmitting device
JPH11298595A (en) * 1998-04-10 1999-10-29 Mitsubishi Electric Corp Communication device
DE19955889A1 (en) * 1999-11-20 2001-05-23 Siemens Ag Mobile telephone with interference noise compensation incorporates device for displacement of phase of interference signal
WO2001056328A1 (en) * 2000-01-28 2001-08-02 Telefonaktiebolaget Lm Ericson (Publ) System and method for dual microphone signal noise reduction using spectral subtraction

Also Published As

Publication number Publication date
GB2394391A (en) 2004-04-21
GB0224189D0 (en) 2002-11-27

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20071017