GB2357682B - Audio circuit and method for wideband to narrowband transition in a communication device - Google Patents

Audio circuit and method for wideband to narrowband transition in a communication device

Info

Publication number
GB2357682B
GB2357682B GB9930572A GB9930572A GB2357682B GB 2357682 B GB2357682 B GB 2357682B GB 9930572 A GB9930572 A GB 9930572A GB 9930572 A GB9930572 A GB 9930572A GB 2357682 B GB2357682 B GB 2357682B
Authority
GB
United Kingdom
Prior art keywords
wideband
communication device
audio circuit
narrowband transition
narrowband
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
GB9930572A
Other versions
GB9930572D0 (en
GB2357682A (en
Inventor
Jonathan Gibbs
Dominic Sai Fan Chan
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 UK Ltd
Original Assignee
Motorola 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 Motorola Ltd filed Critical Motorola Ltd
Priority to GB9930572A priority Critical patent/GB2357682B/en
Publication of GB9930572D0 publication Critical patent/GB9930572D0/en
Priority to PCT/EP2000/011364 priority patent/WO2001048931A2/en
Priority to AU21592/01A priority patent/AU2159201A/en
Publication of GB2357682A publication Critical patent/GB2357682A/en
Application granted granted Critical
Publication of GB2357682B publication Critical patent/GB2357682B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)
GB9930572A 1999-12-23 1999-12-23 Audio circuit and method for wideband to narrowband transition in a communication device Expired - Fee Related GB2357682B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB9930572A GB2357682B (en) 1999-12-23 1999-12-23 Audio circuit and method for wideband to narrowband transition in a communication device
PCT/EP2000/011364 WO2001048931A2 (en) 1999-12-23 2000-11-13 Audio circuit and method for wideband to narrowband transition in a communication device
AU21592/01A AU2159201A (en) 1999-12-23 2000-11-13 Audio circuit and method for wideband to narrowband transition in a communication device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9930572A GB2357682B (en) 1999-12-23 1999-12-23 Audio circuit and method for wideband to narrowband transition in a communication device

Publications (3)

Publication Number Publication Date
GB9930572D0 GB9930572D0 (en) 2000-02-16
GB2357682A GB2357682A (en) 2001-06-27
GB2357682B true GB2357682B (en) 2004-09-08

Family

ID=10866988

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9930572A Expired - Fee Related GB2357682B (en) 1999-12-23 1999-12-23 Audio circuit and method for wideband to narrowband transition in a communication device

Country Status (3)

Country Link
AU (1) AU2159201A (en)
GB (1) GB2357682B (en)
WO (1) WO2001048931A2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7289461B2 (en) * 2001-03-15 2007-10-30 Qualcomm Incorporated Communications using wideband terminals
US7343282B2 (en) 2001-06-26 2008-03-11 Nokia Corporation Method for transcoding audio signals, transcoder, network element, wireless communications network and communications system
WO2003036623A1 (en) * 2001-09-28 2003-05-01 Siemens Aktiengesellschaft Speech extender and method for estimating a broadband speech signal from a narrowband speech signal
DE10252070B4 (en) 2002-11-08 2010-07-15 Palm, Inc. (n.d.Ges. d. Staates Delaware), Sunnyvale Communication terminal with parameterized bandwidth extension and method for bandwidth expansion therefor
FI119533B (en) * 2004-04-15 2008-12-15 Nokia Corp Coding of audio signals
US20050267739A1 (en) * 2004-05-25 2005-12-01 Nokia Corporation Neuroevolution based artificial bandwidth expansion of telephone band speech
CN101263554B (en) 2005-07-22 2011-12-28 法国电信公司 Method for switching rate-and bandwidth-scalable audio decoding rate
BRPI0818927A2 (en) * 2007-11-02 2015-06-16 Huawei Tech Co Ltd Method and apparatus for audio decoding
GB2476041B (en) 2009-12-08 2017-03-01 Skype Encoding and decoding speech signals

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5455888A (en) * 1992-12-04 1995-10-03 Northern Telecom Limited Speech bandwidth extension method and apparatus
EP0732687A2 (en) * 1995-03-13 1996-09-18 Matsushita Electric Industrial Co., Ltd. Apparatus for expanding speech bandwidth
US5581652A (en) * 1992-10-05 1996-12-03 Nippon Telegraph And Telephone Corporation Reconstruction of wideband speech from narrowband speech using codebooks
DE19804581A1 (en) * 1998-02-05 1999-08-26 Siemens Ag Speech or voice-information transmission method for radio communication system using at least two mobile stations for GSM/TDMA service
EP0945852A1 (en) * 1998-03-25 1999-09-29 BRITISH TELECOMMUNICATIONS public limited company Speech synthesis

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5581652A (en) * 1992-10-05 1996-12-03 Nippon Telegraph And Telephone Corporation Reconstruction of wideband speech from narrowband speech using codebooks
US5455888A (en) * 1992-12-04 1995-10-03 Northern Telecom Limited Speech bandwidth extension method and apparatus
EP0732687A2 (en) * 1995-03-13 1996-09-18 Matsushita Electric Industrial Co., Ltd. Apparatus for expanding speech bandwidth
DE19804581A1 (en) * 1998-02-05 1999-08-26 Siemens Ag Speech or voice-information transmission method for radio communication system using at least two mobile stations for GSM/TDMA service
EP0945852A1 (en) * 1998-03-25 1999-09-29 BRITISH TELECOMMUNICATIONS public limited company Speech synthesis

Also Published As

Publication number Publication date
AU2159201A (en) 2001-07-09
GB9930572D0 (en) 2000-02-16
GB2357682A (en) 2001-06-27
WO2001048931A3 (en) 2001-12-13
WO2001048931A2 (en) 2001-07-05

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Legal Events

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

Effective date: 20071223