GB0511164D0 - Discriminator for echo canceller - Google Patents

Discriminator for echo canceller

Info

Publication number
GB0511164D0
GB0511164D0 GBGB0511164.6A GB0511164A GB0511164D0 GB 0511164 D0 GB0511164 D0 GB 0511164D0 GB 0511164 A GB0511164 A GB 0511164A GB 0511164 D0 GB0511164 D0 GB 0511164D0
Authority
GB
United Kingdom
Prior art keywords
discriminator
echo canceller
canceller
echo
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.)
Withdrawn
Application number
GBGB0511164.6A
Other versions
GB2439990A (en
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.)
TECTEON PLC
Original Assignee
TECTEON PLC
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 TECTEON PLC filed Critical TECTEON PLC
Priority to GB0511164A priority Critical patent/GB2439990A/en
Publication of GB0511164D0 publication Critical patent/GB0511164D0/en
Publication of GB2439990A publication Critical patent/GB2439990A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • H04B3/234—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers using double talk detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • 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

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)
GB0511164A 2005-06-01 2005-06-01 Double talk and echo path change discriminator for echo canceller Withdrawn GB2439990A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0511164A GB2439990A (en) 2005-06-01 2005-06-01 Double talk and echo path change discriminator for echo canceller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0511164A GB2439990A (en) 2005-06-01 2005-06-01 Double talk and echo path change discriminator for echo canceller

Publications (2)

Publication Number Publication Date
GB0511164D0 true GB0511164D0 (en) 2005-07-06
GB2439990A GB2439990A (en) 2008-01-16

Family

ID=34834964

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0511164A Withdrawn GB2439990A (en) 2005-06-01 2005-06-01 Double talk and echo path change discriminator for echo canceller

Country Status (1)

Country Link
GB (1) GB2439990A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8625776B2 (en) 2009-09-23 2014-01-07 Polycom, Inc. Detection and suppression of returned audio at near-end

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000151473A (en) * 1998-11-18 2000-05-30 Toshiba Corp Voice signal processing unit
US6865270B1 (en) * 2000-09-21 2005-03-08 Rane Corporation Echo cancellation method and apparatus
US6792107B2 (en) * 2001-01-26 2004-09-14 Lucent Technologies Inc. Double-talk detector suitable for a telephone-enabled PC

Also Published As

Publication number Publication date
GB2439990A (en) 2008-01-16

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)
720A Reinstatement of application (patents act 1977, section 20(2)a)

Free format text: REQUEST FOR REINSTATEMENT FILED

Free format text: REQUEST FOR REINSTATEMENT ALLOWED

WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)