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
Grant status
Grant
Patent type
Prior art keywords
wideband
method
communication device
audio circuit
narrowband transition
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
GB2357682A (en )
GB9930572D0 (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 Inc
Original Assignee
Motorola Solutions 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
Grant date

Links

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
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 (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

Applications Claiming Priority (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 WO2001048931A3 (en) 1999-12-23 2000-11-13 Audio circuit and method for wideband to narrowband transition in a communication device
AU2159201A AU2159201A (en) 1999-12-23 2000-11-13 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 true 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 (2)

Country Link
GB (1) GB2357682B (en)
WO (1) WO2001048931A3 (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
DE50113277D1 (en) 2001-09-28 2007-12-27 Nokia Siemens Networks Spa Speech extender and process to estimate a wideband speech signal based on 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 expansion and method for bandwidth extension for
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
ES2356492T3 (en) * 2005-07-22 2011-04-08 France Telecom Switching method transmission rate scalable audio decoding transmission rate and bandwidth.
EP2207166B1 (en) * 2007-11-02 2013-06-19 Huawei Technologies Co., Ltd. An audio decoding method and device
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 Type
WO2001048931A3 (en) 2001-12-13 application
GB2357682A (en) 2001-06-27 application
GB9930572D0 (en) 2000-02-16 grant
WO2001048931A2 (en) 2001-07-05 application

Similar Documents

Publication Publication Date Title
GB2354891B (en) Power supply method and power supply device for portable telephone
GB2366295B (en) A device and methods for preparing undifferentiated cells
GB9905166D0 (en) Viscometer device and method
GB2349772B (en) Method and apparatus for broadcasting audio in a communication system

Legal Events

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

Effective date: 20071223