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GB2348091B - Subband echo canceller and method therefor - Google Patents

Subband echo canceller and method therefor

Info

Publication number
GB2348091B
GB2348091B GB0000686A GB0000686A GB2348091B GB 2348091 B GB2348091 B GB 2348091B GB 0000686 A GB0000686 A GB 0000686A GB 0000686 A GB0000686 A GB 0000686A GB 2348091 B GB2348091 B GB 2348091B
Authority
GB
United Kingdom
Prior art keywords
method therefor
echo canceller
subband echo
subband
canceller
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
GB0000686A
Other versions
GB2348091A (en
GB0000686D0 (en
Inventor
Tom Hong Li
Michael Mclaughlin
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of GB0000686D0 publication Critical patent/GB0000686D0/en
Publication of GB2348091A publication Critical patent/GB2348091A/en
Application granted granted Critical
Publication of GB2348091B publication Critical patent/GB2348091B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
GB0000686A 1999-01-12 2000-01-12 Subband echo canceller and method therefor Expired - Fee Related GB2348091B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22925599A 1999-01-12 1999-01-12

Publications (3)

Publication Number Publication Date
GB0000686D0 GB0000686D0 (en) 2000-03-08
GB2348091A GB2348091A (en) 2000-09-20
GB2348091B true GB2348091B (en) 2001-04-18

Family

ID=22860447

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0000686A Expired - Fee Related GB2348091B (en) 1999-01-12 2000-01-12 Subband echo canceller and method therefor

Country Status (3)

Country Link
KR (1) KR20000057739A (en)
CN (1) CN1261742A (en)
GB (1) GB2348091B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0101175D0 (en) * 2001-04-02 2001-04-02 Coding Technologies Sweden Ab Aliasing reduction using complex-exponential-modulated filter banks
EP1850573A1 (en) * 2006-04-28 2007-10-31 France Télécom Echo reduction method in a broadband audio signal
TR201908841T4 (en) * 2015-09-22 2019-07-22 Koninklijke Philips Nv Audio signal processing.
CN111128218B (en) * 2019-12-31 2022-09-20 恒玄科技(上海)股份有限公司 Echo cancellation method and device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2240452A (en) * 1990-01-10 1991-07-31 Motorola Inc Echo canceller has plurality of sub-band channels each with its own adaptive filter
EP0821513A1 (en) * 1996-07-23 1998-01-28 Nec Corporation Sub-band acoustic echo canceller

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2240452A (en) * 1990-01-10 1991-07-31 Motorola Inc Echo canceller has plurality of sub-band channels each with its own adaptive filter
EP0821513A1 (en) * 1996-07-23 1998-01-28 Nec Corporation Sub-band acoustic echo canceller

Also Published As

Publication number Publication date
KR20000057739A (en) 2000-09-25
GB2348091A (en) 2000-09-20
GB0000686D0 (en) 2000-03-08
CN1261742A (en) 2000-08-02

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070112