GB0224189D0 - A system for reducing the background noise on a telecommunication transmission - Google Patents
A system for reducing the background noise on a telecommunication transmissionInfo
- Publication number
- GB0224189D0 GB0224189D0 GBGB0224189.1A GB0224189A GB0224189D0 GB 0224189 D0 GB0224189 D0 GB 0224189D0 GB 0224189 A GB0224189 A GB 0224189A GB 0224189 D0 GB0224189 D0 GB 0224189D0
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal 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
-
- 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal 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
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 true GB0224189D0 (en) | 2002-11-27 |
GB2394391A GB2394391A (en) | 2004-04-21 |
GB2394391B 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 (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007015203A1 (en) * | 2005-08-02 | 2007-02-08 | Koninklijke Philips Electronics N.V. | Enhancement of speech intelligibility in a mobile communication device by controlling the operation of a vibrator in dξpendance of the background noise |
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 canceler, sound collecting device having noise canceler, and portable telephone having noise canceler |
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 |
CN113223538B (en) * | 2021-04-01 | 2022-05-03 | 北京百度网讯科技有限公司 | Voice wake-up method, device, system, equipment and storage medium |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0595550A (en) * | 1991-10-01 | 1993-04-16 | Nec Corp | Noise eliminating circuit for conference telephone |
GB9217313D0 (en) * | 1992-08-14 | 1992-09-30 | British Broadcasting Corp | Method and apparatus for attenuating an unwnated signal in a mix of signals |
JPH09331377A (en) * | 1996-06-12 | 1997-12-22 | Nec Corp | Noise cancellation circuit |
FI973455A (en) * | 1997-08-22 | 1999-02-23 | Nokia Mobile Phones Ltd | A method and arrangement for reducing noise in a space by generating noise |
JPH11164389A (en) * | 1997-11-26 | 1999-06-18 | Matsushita Electric Ind Co Ltd | Adaptive noise canceler 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 equipment |
US6717991B1 (en) * | 1998-05-27 | 2004-04-06 | Telefonaktiebolaget Lm Ericsson (Publ) | System and method for dual microphone signal noise reduction using spectral subtraction |
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 |
-
2002
- 2002-10-17 GB GB0224189A patent/GB2394391B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB2394391B (en) | 2006-04-12 |
GB2394391A (en) | 2004-04-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1568142A4 (en) | A communications system | |
EP1499991A4 (en) | A network system having a virtual-service-module | |
AU2003271545A1 (en) | Transmission | |
EP1491794A4 (en) | Automatic transmission | |
GB0207280D0 (en) | Vehicle transmission systems | |
GB0108476D0 (en) | Transmission systems | |
GB2389966B (en) | Transmission line type noise filter | |
GB0112295D0 (en) | Transmission systems | |
EP1567788A4 (en) | Transmission | |
GB0207505D0 (en) | A communications system | |
GB2394391B (en) | A system for reducing the background noise on a telecommunication transmission | |
GB2395386B (en) | Optical transmission system | |
GB2408298B (en) | Vehicle transmission systems | |
AU2003200750A1 (en) | Telephone System | |
GB2392330B (en) | Optical transmission system | |
GB0312436D0 (en) | Transmission line type noise filter | |
GB2392314B (en) | Transmission line type noise filter | |
GB0325058D0 (en) | Terminated transmission lines | |
EP1465379A4 (en) | Transmission device | |
GB0224456D0 (en) | A transmission assembly | |
HK1046602A1 (en) | A telephone system. | |
GB0229543D0 (en) | Transmission system | |
TW560591U (en) | Transmission system | |
GB0208560D0 (en) | Transmission system | |
GB0204322D0 (en) | Transmission line structure |
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 |