GB9717816D0 - Telephone handset noise supression - Google Patents

Telephone handset noise supression

Info

Publication number
GB9717816D0
GB9717816D0 GBGB9717816.4A GB9717816A GB9717816D0 GB 9717816 D0 GB9717816 D0 GB 9717816D0 GB 9717816 A GB9717816 A GB 9717816A GB 9717816 D0 GB9717816 D0 GB 9717816D0
Authority
GB
United Kingdom
Prior art keywords
telephone handset
noise supression
handset noise
supression
telephone
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.)
Ceased
Application number
GBGB9717816.4A
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.)
SEC DEP FOR TRANSPORT
SECRETARY OF STATE FOR TRANSPORT
Original Assignee
SEC DEP FOR TRANSPORT
SECRETARY OF STATE FOR TRANSPORT
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 SEC DEP FOR TRANSPORT, SECRETARY OF STATE FOR TRANSPORT filed Critical SEC DEP FOR TRANSPORT
Priority to GBGB9717816.4A priority Critical patent/GB9717816D0/en
Publication of GB9717816D0 publication Critical patent/GB9717816D0/en
Application status is Ceased legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00Circuits for transducers, loudspeakers or microphones
    • H04R3/02Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods 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
    • G10K11/16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178Methods 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers; Analogous equipment at exchanges
    • H04M1/02Constructional features of telephone sets
    • H04M1/19Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Special mouthpieces or receivers therefor
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10Applications
    • G10K2210/108Communication systems, e.g. where useful sound is kept and noise is cancelled
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10Applications
    • G10K2210/108Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G10K2210/1081Earphones, e.g. for telephones, ear protectors or headsets
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00Processing 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
    • G10L21/02Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208Noise filtering
    • G10L21/0216Noise filtering characterised by the method used for estimating noise
    • G10L2021/02161Number of inputs available containing the signal or the noise to be suppressed
    • G10L2021/02165Two microphones, one receiving mainly the noise signal and the other one mainly the speech signal
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00Processing 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
    • G10L21/02Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208Noise filtering
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00Circuits for transducers, loudspeakers or microphones
    • H04R3/005Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
GBGB9717816.4A 1997-08-21 1997-08-21 Telephone handset noise supression Ceased GB9717816D0 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GBGB9717816.4A GB9717816D0 (en) 1997-08-21 1997-08-21 Telephone handset noise supression

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9717816.4A GB9717816D0 (en) 1997-08-21 1997-08-21 Telephone handset noise supression
AU90822/98A AU9082298A (en) 1997-08-21 1998-08-21 Telephone handset noise suppression
PCT/GB1998/002518 WO1999011045A1 (en) 1997-08-21 1998-08-21 Telephone handset noise suppression

Publications (1)

Publication Number Publication Date
GB9717816D0 true GB9717816D0 (en) 1997-10-29

Family

ID=10817877

Family Applications (1)

Application Number Title Priority Date Filing Date
GBGB9717816.4A Ceased GB9717816D0 (en) 1997-08-21 1997-08-21 Telephone handset noise supression

Country Status (3)

Country Link
AU (1) AU9082298A (en)
GB (1) GB9717816D0 (en)
WO (1) WO1999011045A1 (en)

Families Citing this family (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6768795B2 (en) 2001-01-11 2004-07-27 Telefonaktiebolaget Lm Ericsson (Publ) Side-tone control within a telecommunication instrument
US7706525B2 (en) * 2001-10-01 2010-04-27 Kyocera Wireless Corp. Systems and methods for side-tone noise suppression
US7162212B2 (en) 2003-09-22 2007-01-09 Agere Systems Inc. System and method for obscuring unwanted ambient noise and handset and central office equipment incorporating the same
EP1806840A1 (en) * 2006-01-05 2007-07-11 Siemens Schweiz AG Adaptive gain adjustment of voice volume
CN102947685B (en) * 2010-06-17 2014-09-17 杜比实验室特许公司 Method and apparatus for reducing the effect of environmental noise on listeners
KR101909432B1 (en) 2010-12-03 2018-10-18 씨러스 로직 인코포레이티드 Oversight control of an adaptive noise canceler in a personal audio device
US8908877B2 (en) 2010-12-03 2014-12-09 Cirrus Logic, Inc. Ear-coupling detection and adjustment of adaptive response in noise-canceling in personal audio devices
US9318094B2 (en) 2011-06-03 2016-04-19 Cirrus Logic, Inc. Adaptive noise canceling architecture for a personal audio device
US8958571B2 (en) 2011-06-03 2015-02-17 Cirrus Logic, Inc. MIC covering detection in personal audio devices
US8948407B2 (en) 2011-06-03 2015-02-03 Cirrus Logic, Inc. Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
US9824677B2 (en) 2011-06-03 2017-11-21 Cirrus Logic, Inc. Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
US9325821B1 (en) 2011-09-30 2016-04-26 Cirrus Logic, Inc. Sidetone management in an adaptive noise canceling (ANC) system including secondary path modeling
US9214150B2 (en) 2011-06-03 2015-12-15 Cirrus Logic, Inc. Continuous adaptation of secondary path adaptive response in noise-canceling personal audio devices
US9014387B2 (en) 2012-04-26 2015-04-21 Cirrus Logic, Inc. Coordinated control of adaptive noise cancellation (ANC) among earspeaker channels
US9319781B2 (en) 2012-05-10 2016-04-19 Cirrus Logic, Inc. Frequency and direction-dependent ambient sound handling in personal audio devices having adaptive noise cancellation (ANC)
US9123321B2 (en) 2012-05-10 2015-09-01 Cirrus Logic, Inc. Sequenced adaptation of anti-noise generator response and secondary path response in an adaptive noise canceling system
US9318090B2 (en) 2012-05-10 2016-04-19 Cirrus Logic, Inc. Downlink tone detection and adaptation of a secondary path response model in an adaptive noise canceling system
US9532139B1 (en) 2012-09-14 2016-12-27 Cirrus Logic, Inc. Dual-microphone frequency amplitude response self-calibration
US9369798B1 (en) 2013-03-12 2016-06-14 Cirrus Logic, Inc. Internal dynamic range control in an adaptive noise cancellation (ANC) system
US9414150B2 (en) 2013-03-14 2016-08-09 Cirrus Logic, Inc. Low-latency multi-driver adaptive noise canceling (ANC) system for a personal audio device
US9208771B2 (en) 2013-03-15 2015-12-08 Cirrus Logic, Inc. Ambient noise-based adaptation of secondary path adaptive response in noise-canceling personal audio devices
US9502020B1 (en) 2013-03-15 2016-11-22 Cirrus Logic, Inc. Robust adaptive noise canceling (ANC) in a personal audio device
DE102013005049A1 (en) * 2013-03-22 2014-09-25 Unify Gmbh & Co. Kg Method and apparatus for controlling voice communication and use thereof
US10206032B2 (en) 2013-04-10 2019-02-12 Cirrus Logic, Inc. Systems and methods for multi-mode adaptive noise cancellation for audio headsets
US9462376B2 (en) 2013-04-16 2016-10-04 Cirrus Logic, Inc. Systems and methods for hybrid adaptive noise cancellation
US9460701B2 (en) 2013-04-17 2016-10-04 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation by biasing anti-noise level
US9478210B2 (en) 2013-04-17 2016-10-25 Cirrus Logic, Inc. Systems and methods for hybrid adaptive noise cancellation
US9578432B1 (en) 2013-04-24 2017-02-21 Cirrus Logic, Inc. Metric and tool to evaluate secondary path design in adaptive noise cancellation systems
US9392364B1 (en) 2013-08-15 2016-07-12 Cirrus Logic, Inc. Virtual microphone for adaptive noise cancellation in personal audio devices
US9288570B2 (en) 2013-08-27 2016-03-15 Bose Corporation Assisting conversation while listening to audio
US9190043B2 (en) 2013-08-27 2015-11-17 Bose Corporation Assisting conversation in noisy environments
US9666176B2 (en) 2013-09-13 2017-05-30 Cirrus Logic, Inc. Systems and methods for adaptive noise cancellation by adaptively shaping internal white noise to train a secondary path
US9620101B1 (en) 2013-10-08 2017-04-11 Cirrus Logic, Inc. Systems and methods for maintaining playback fidelity in an audio system with adaptive noise cancellation
US9704472B2 (en) 2013-12-10 2017-07-11 Cirrus Logic, Inc. Systems and methods for sharing secondary path information between audio channels in an adaptive noise cancellation system
US10219071B2 (en) 2013-12-10 2019-02-26 Cirrus Logic, Inc. Systems and methods for bandlimiting anti-noise in personal audio devices having adaptive noise cancellation
US10382864B2 (en) 2013-12-10 2019-08-13 Cirrus Logic, Inc. Systems and methods for providing adaptive playback equalization in an audio device
US9369557B2 (en) * 2014-03-05 2016-06-14 Cirrus Logic, Inc. Frequency-dependent sidetone calibration
US9479860B2 (en) 2014-03-07 2016-10-25 Cirrus Logic, Inc. Systems and methods for enhancing performance of audio transducer based on detection of transducer status
US9319784B2 (en) 2014-04-14 2016-04-19 Cirrus Logic, Inc. Frequency-shaped noise-based adaptation of secondary path adaptive response in noise-canceling personal audio devices
US10181315B2 (en) 2014-06-13 2019-01-15 Cirrus Logic, Inc. Systems and methods for selectively enabling and disabling adaptation of an adaptive noise cancellation system
US9478212B1 (en) 2014-09-03 2016-10-25 Cirrus Logic, Inc. Systems and methods for use of adaptive secondary path estimate to control equalization in an audio device
US9552805B2 (en) 2014-12-19 2017-01-24 Cirrus Logic, Inc. Systems and methods for performance and stability control for feedback adaptive noise cancellation
US10412479B2 (en) 2015-07-17 2019-09-10 Cirrus Logic, Inc. Headset management by microphone terminal characteristic detection
JP2018530940A (en) 2015-08-20 2018-10-18 シーラス ロジック インターナショナル セミコンダクター リミテッド Feedback adaptive noise cancellation (ANC) controller and method with feedback response provided in part by a fixed response filter
US9578415B1 (en) 2015-08-21 2017-02-21 Cirrus Logic, Inc. Hybrid adaptive noise cancellation system with filtered error microphone signal
CN107659864A (en) * 2016-07-25 2018-02-02 中兴通讯股份有限公司 A kind of noise-reduction method and terminal

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06503897A (en) * 1990-09-14 1994-04-28
JPH0522391A (en) * 1991-07-10 1993-01-29 Sony Corp Voice masking device
US5251263A (en) * 1992-05-22 1993-10-05 Andrea Electronics Corporation Adaptive noise cancellation and speech enhancement system and apparatus therefor
US5625684A (en) * 1993-02-04 1997-04-29 Local Silence, Inc. Active noise suppression system for telephone handsets and method
JPH0818630A (en) * 1994-07-04 1996-01-19 Iwatsu Electric Co Ltd Handset for suppressing noise and noise suppressing telephone set
JP2843278B2 (en) * 1995-07-24 1999-01-06 松下電器産業株式会社 Handset noise control type

Also Published As

Publication number Publication date
AU9082298A (en) 1999-03-16
WO1999011045A1 (en) 1999-03-04

Similar Documents

Publication Publication Date Title
GB2297883B (en) Radio telephone
GB2324115B (en) A mobile telephone fastening
GB2324632B (en) Microphone unit
GB2347051B (en) Portable television phone
GB2310769B (en) Telephone connector
GB2333004B (en) Earpiece acoustics
GB2342529B (en) Call Centre
GB2326050B (en) Portable telephone set
GB2340333B (en) Radio telephone
GB2327017B (en) Cellular phone
GB9906306D0 (en) An improved audio-outout for hands-free portable telephone acessory
GB9719584D0 (en) Mobile radio telephone
GB9726362D0 (en) Mobile communications
GB9717690D0 (en) Earphone/microphone assembly
GB9701816D0 (en) Mobile telephone system
PL345712A1 (en) Head phone
GB2317301B (en) Mobile telephone
GB2327555B (en) Radio telephone
HK1028692A1 (en) Mobile telephone having continuous recording capability.
AU5278798A (en) Noise canceler
GB9803796D0 (en) Simulation of telephone handset
GB2315388B (en) Mobile communications
DE69943237D1 (en) Certified telephone integration
HK1022064A1 (en) Telephone set.
GB9802547D0 (en) Call centre

Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)