FI971680A - Kaiunpoistomekanismi - Google Patents

Kaiunpoistomekanismi Download PDF

Info

Publication number
FI971680A
FI971680A FI971680A FI971680A FI971680A FI 971680 A FI971680 A FI 971680A FI 971680 A FI971680 A FI 971680A FI 971680 A FI971680 A FI 971680A FI 971680 A FI971680 A FI 971680A
Authority
FI
Finland
Prior art keywords
echo cancellation
cancellation mechanism
echo
cancellation
Prior art date
Application number
FI971680A
Other languages
English (en)
Swedish (sv)
Other versions
FI105864B (fi
FI971680A0 (fi
Inventor
Jyri Suvanen
Original Assignee
Nokia Telecommunications Oy
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 Nokia Telecommunications Oy filed Critical Nokia Telecommunications Oy
Priority to FI971680A priority Critical patent/FI105864B/fi
Publication of FI971680A0 publication Critical patent/FI971680A0/fi
Priority to PCT/FI1998/000332 priority patent/WO1998048527A2/fi
Priority to AU68364/98A priority patent/AU6836498A/en
Publication of FI971680A publication Critical patent/FI971680A/fi
Priority to US09/420,077 priority patent/US6545985B1/en
Application granted granted Critical
Publication of FI105864B publication Critical patent/FI105864B/fi

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/015—Reducing echo effects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/082—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using echo cancellers
    • 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
    • G10L2021/02082—Noise filtering the noise being echo, reverberation of the speech

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephone Function (AREA)
FI971680A 1997-04-18 1997-04-18 Kaiunpoistomekanismi FI105864B (fi)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FI971680A FI105864B (fi) 1997-04-18 1997-04-18 Kaiunpoistomekanismi
PCT/FI1998/000332 WO1998048527A2 (fi) 1997-04-18 1998-04-15 Echo cancellation mechanism
AU68364/98A AU6836498A (en) 1997-04-18 1998-04-15 Echo cancellation mechanism
US09/420,077 US6545985B1 (en) 1997-04-18 1999-10-18 Echo cancellation mechanism

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI971680 1997-04-18
FI971680A FI105864B (fi) 1997-04-18 1997-04-18 Kaiunpoistomekanismi

Publications (3)

Publication Number Publication Date
FI971680A0 FI971680A0 (fi) 1997-04-18
FI971680A true FI971680A (fi) 1998-10-19
FI105864B FI105864B (fi) 2000-10-13

Family

ID=8548677

Family Applications (1)

Application Number Title Priority Date Filing Date
FI971680A FI105864B (fi) 1997-04-18 1997-04-18 Kaiunpoistomekanismi

Country Status (4)

Country Link
US (1) US6545985B1 (fi)
AU (1) AU6836498A (fi)
FI (1) FI105864B (fi)
WO (1) WO1998048527A2 (fi)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2803476B1 (fr) * 1999-12-31 2003-01-10 Cit Alcatel Procede d'etablissement de mode de fonctionnement sans double transcodage dans un systeme cellulaire de radiocommunications mobiles
FI20001517A (fi) * 2000-06-26 2001-12-27 Nokia Networks Oy Menetelmä ja järjestelmä tietoliikennesignaalien käsittelemiseen
US7203518B2 (en) * 2001-02-20 2007-04-10 International Business Machines Corporation Method and apparatus for simplified data dispensation to and from digital systems
CN100367736C (zh) * 2002-04-30 2008-02-06 艾利森电话股份有限公司 用于将工作站连接到广域网的方法和装置
FR2866499B1 (fr) * 2004-02-12 2006-05-26 Cit Alcatel Procede pour le transport de parole compressee en mode paquet dans le reseau coeur d'infrastructures de communication avec des mobiles
CN101046965B (zh) * 2006-03-27 2010-05-12 华为技术有限公司 一种在回波消除中产生舒适噪声的方法
US7809129B2 (en) * 2007-08-31 2010-10-05 Motorola, Inc. Acoustic echo cancellation based on noise environment
US20090094026A1 (en) * 2007-10-03 2009-04-09 Binshi Cao Method of determining an estimated frame energy of a communication

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5608779A (en) * 1994-11-08 1997-03-04 Motorola, Inc. Method for communications between mobile units using single and multiple switching center configurations
US5768308A (en) * 1994-12-19 1998-06-16 Northern Telecom Limited System for TDMA mobile-to-mobile VSELP codec bypass
FI101439B (fi) * 1995-04-13 1998-06-15 Nokia Telecommunications Oy Transkooderi, jossa on tandem-koodauksen esto
US5758256A (en) 1995-06-07 1998-05-26 Hughes Electronics Corporation Method of transporting speech information in a wireless cellular system
FI110826B (fi) * 1995-06-08 2003-03-31 Nokia Corp Akustisen kaiun poisto digitaalisessa matkaviestinjärjestelmässä
US5835486A (en) * 1996-07-11 1998-11-10 Dsc/Celcore, Inc. Multi-channel transcoder rate adapter having low delay and integral echo cancellation
US6011846A (en) * 1996-12-19 2000-01-04 Nortel Networks Corporation Methods and apparatus for echo suppression
US6064873A (en) * 1997-03-26 2000-05-16 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for controlling echo on both sides of a connection

Also Published As

Publication number Publication date
AU6836498A (en) 1998-11-13
FI105864B (fi) 2000-10-13
FI971680A0 (fi) 1997-04-18
WO1998048527A2 (fi) 1998-10-29
WO1998048527A3 (fi) 1999-02-11
US6545985B1 (en) 2003-04-08

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