GB9907912D0 - Echo canceller with compensation for codec limiting effects - Google Patents

Echo canceller with compensation for codec limiting effects

Info

Publication number
GB9907912D0
GB9907912D0 GBGB9907912.1A GB9907912A GB9907912D0 GB 9907912 D0 GB9907912 D0 GB 9907912D0 GB 9907912 A GB9907912 A GB 9907912A GB 9907912 D0 GB9907912 D0 GB 9907912D0
Authority
GB
United Kingdom
Prior art keywords
codec
compensation
echo canceller
limiting effects
limiting
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Withdrawn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
GBGB9907912.1A
Other versions
GB2341066A (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.)
Microsemi Semiconductor ULC
Original Assignee
Mitel Corp
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 Mitel Corp filed Critical Mitel Corp
Publication of GB9907912D0 publication Critical patent/GB9907912D0/en
Publication of GB2341066A publication Critical patent/GB2341066A/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Withdrawn legal-status Critical Current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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
GB9907912A 1998-08-20 1999-04-07 Adaptive echo canceller removes non-linear signals Withdrawn GB2341066A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2245411 CA2245411A1 (en) 1998-08-20 1998-08-20 Echo canceller with compensation for codec limiting effects

Publications (2)

Publication Number Publication Date
GB9907912D0 true GB9907912D0 (en) 1999-06-02
GB2341066A GB2341066A (en) 2000-03-01

Family

ID=4162753

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9907912A Withdrawn GB2341066A (en) 1998-08-20 1999-04-07 Adaptive echo canceller removes non-linear signals

Country Status (2)

Country Link
CA (1) CA2245411A1 (en)
GB (1) GB2341066A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112237008A (en) * 2018-06-11 2021-01-15 索尼公司 Signal processing device, signal processing method, and program

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0177239A3 (en) * 1984-10-01 1987-06-03 AT&T Corp. Adaptive filter including signal path compensation
GB8511835D0 (en) * 1985-05-10 1985-06-19 British Telecomm Adaptive digital filter
EP0280898A1 (en) * 1987-02-18 1988-09-07 Siemens Aktiengesellschaft Circuit for the suppression of echo signals
US5146494A (en) * 1989-07-31 1992-09-08 At&T Bell Laboratories Overlapping look-up-and-add echo canceller requiring a smaller memory size
US4977591A (en) * 1989-11-17 1990-12-11 Nynex Corporation Dual mode LMS nonlinear data echo canceller
US5148427A (en) * 1990-04-10 1992-09-15 Level One Communications, Inc. Non-linear echo canceller
JP2794999B2 (en) * 1991-08-14 1998-09-10 国際電信電話株式会社 Echo cancellation method
JP2853455B2 (en) * 1992-05-15 1999-02-03 ケイディディ株式会社 Echo canceller
US5623513A (en) * 1993-12-13 1997-04-22 Amati Communications Corporation Mitigating clipping and quantization effects in digital transmission systems
US5600714A (en) * 1994-01-14 1997-02-04 Sound Control Technologies, Inc. Conference telephone using dynamic modeled line hybrid
US5600718A (en) * 1995-02-24 1997-02-04 Ericsson Inc. Apparatus and method for adaptively precompensating for loudspeaker distortions
US5680450A (en) * 1995-02-24 1997-10-21 Ericsson Inc. Apparatus and method for canceling acoustic echoes including non-linear distortions in loudspeaker telephones
SE505692C2 (en) * 1995-12-18 1997-09-29 Ericsson Telefon Ab L M Method and apparatus for echo extinguishing by estimating residual signal power
US5796819A (en) * 1996-07-24 1998-08-18 Ericsson Inc. Echo canceller for non-linear circuits

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112237008A (en) * 2018-06-11 2021-01-15 索尼公司 Signal processing device, signal processing method, and program
CN112237008B (en) * 2018-06-11 2022-06-03 索尼公司 Signal processing apparatus, signal processing method, and computer-readable storage medium
US11423921B2 (en) 2018-06-11 2022-08-23 Sony Corporation Signal processing device, signal processing method, and program

Also Published As

Publication number Publication date
GB2341066A (en) 2000-03-01
CA2245411A1 (en) 2000-02-20

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Legal Events

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