GB2232563B - Audio signal processor circuit - Google Patents

Audio signal processor circuit

Info

Publication number
GB2232563B
GB2232563B GB9010752A GB9010752A GB2232563B GB 2232563 B GB2232563 B GB 2232563B GB 9010752 A GB9010752 A GB 9010752A GB 9010752 A GB9010752 A GB 9010752A GB 2232563 B GB2232563 B GB 2232563B
Authority
GB
United Kingdom
Prior art keywords
audio signal
signal processor
processor circuit
circuit
audio
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
GB9010752A
Other versions
GB9010752D0 (en
GB2232563A (en
Inventor
Derek Norman Glanville
Robin Angus Emley
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.)
Telent Technologies Services Ltd
GPT Ltd
Plessey Semiconductors Ltd
Plessey Telecommunications Ltd
Original Assignee
Telent Technologies Services Ltd
GPT Ltd
Plessey Semiconductors Ltd
Plessey Telecommunications Ltd
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 Telent Technologies Services Ltd, GPT Ltd, Plessey Semiconductors Ltd, Plessey Telecommunications Ltd filed Critical Telent Technologies Services Ltd
Priority to JP2507405A priority Critical patent/JPH05501941A/en
Priority to EP90907341A priority patent/EP0482003B1/en
Priority to ES90907341T priority patent/ES2064733T3/en
Priority to PCT/GB1990/000747 priority patent/WO1991018453A1/en
Priority to DE69015193T priority patent/DE69015193T2/en
Priority to AT90907341T priority patent/ATE115794T1/en
Priority to CA002063800A priority patent/CA2063800C/en
Priority to US07/793,399 priority patent/US5453976A/en
Publication of GB9010752D0 publication Critical patent/GB9010752D0/en
Publication of GB2232563A publication Critical patent/GB2232563A/en
Application granted granted Critical
Publication of GB2232563B publication Critical patent/GB2232563B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
GB9010752A 1989-05-12 1990-05-14 Audio signal processor circuit Expired - Fee Related GB2232563B (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US07/793,399 US5453976A (en) 1989-05-12 1990-05-15 Audio signal processor circuit
ES90907341T ES2064733T3 (en) 1989-05-12 1990-05-15 AUDIO SIGNAL TREATMENT CIRCUIT.
PCT/GB1990/000747 WO1991018453A1 (en) 1989-05-12 1990-05-15 Audio signal processor circuit
DE69015193T DE69015193T2 (en) 1989-05-12 1990-05-15 CIRCUIT FOR AUDIO SIGNAL PROCESSING.
JP2507405A JPH05501941A (en) 1989-05-12 1990-05-15 audio signal processor circuit
CA002063800A CA2063800C (en) 1989-05-12 1990-05-15 Audio signal processor circuit
EP90907341A EP0482003B1 (en) 1989-05-12 1990-05-15 Audio signal processor circuit
AT90907341T ATE115794T1 (en) 1989-05-12 1990-05-15 AUDIO SIGNAL PROCESSING CIRCUIT.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8910956A GB2232860A (en) 1989-05-12 1989-05-12 Audio signal echo cancellation circuit

Publications (3)

Publication Number Publication Date
GB9010752D0 GB9010752D0 (en) 1990-07-04
GB2232563A GB2232563A (en) 1990-12-12
GB2232563B true GB2232563B (en) 1994-02-02

Family

ID=10656642

Family Applications (2)

Application Number Title Priority Date Filing Date
GB8910956A Withdrawn GB2232860A (en) 1989-05-12 1989-05-12 Audio signal echo cancellation circuit
GB9010752A Expired - Fee Related GB2232563B (en) 1989-05-12 1990-05-14 Audio signal processor circuit

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB8910956A Withdrawn GB2232860A (en) 1989-05-12 1989-05-12 Audio signal echo cancellation circuit

Country Status (1)

Country Link
GB (2) GB2232860A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59103662D1 (en) * 1990-09-21 1995-01-12 Siemens Ag Method for recognizing periodically occurring digital signals in the reception path of a digital echo canceller.
US5526347A (en) * 1992-11-02 1996-06-11 Advanced Micro Devices, Inc. Decorrelation controller for an adaptive echo cancellor
DE19960051A1 (en) * 1999-12-14 2001-06-21 Alcatel Sa Method for echo cancellation in a telecommunications system and echo cancellation device for carrying out the method

Also Published As

Publication number Publication date
GB9010752D0 (en) 1990-07-04
GB8910956D0 (en) 1989-06-28
GB2232563A (en) 1990-12-12
GB2232860A (en) 1990-12-19

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Legal Events

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

Effective date: 20030514