JP2001272998A - 通信方法とワイヤレス呼接続装置 - Google Patents

通信方法とワイヤレス呼接続装置

Info

Publication number
JP2001272998A
JP2001272998A JP2001036934A JP2001036934A JP2001272998A JP 2001272998 A JP2001272998 A JP 2001272998A JP 2001036934 A JP2001036934 A JP 2001036934A JP 2001036934 A JP2001036934 A JP 2001036934A JP 2001272998 A JP2001272998 A JP 2001272998A
Authority
JP
Japan
Prior art keywords
audio signal
adaptive filter
modified
decoder
amplitude
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.)
Pending
Application number
JP2001036934A
Other languages
English (en)
Japanese (ja)
Other versions
JP2001272998A5 (enExample
Inventor
Mahmoud R Sherif
ラガエイ シェリフ マーマウド
Ahmed A Tarraf
エイ、タラフ アーメッド
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.)
Nokia of America Corp
Original Assignee
Lucent Technologies 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 Lucent Technologies Inc filed Critical Lucent Technologies Inc
Publication of JP2001272998A publication Critical patent/JP2001272998A/ja
Publication of JP2001272998A5 publication Critical patent/JP2001272998A5/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • 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
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/26—Pre-filtering or post-filtering
    • 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
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephone Function (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Mobile Radio Communication Systems (AREA)
JP2001036934A 2000-02-14 2001-02-14 通信方法とワイヤレス呼接続装置 Pending JP2001272998A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/503990 2000-02-14
US09/503,990 US7006787B1 (en) 2000-02-14 2000-02-14 Mobile to mobile digital wireless connection having enhanced voice quality

Publications (2)

Publication Number Publication Date
JP2001272998A true JP2001272998A (ja) 2001-10-05
JP2001272998A5 JP2001272998A5 (enExample) 2008-03-27

Family

ID=24004388

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001036934A Pending JP2001272998A (ja) 2000-02-14 2001-02-14 通信方法とワイヤレス呼接続装置

Country Status (9)

Country Link
US (1) US7006787B1 (enExample)
EP (1) EP1126439B1 (enExample)
JP (1) JP2001272998A (enExample)
KR (1) KR100444418B1 (enExample)
CN (1) CN1309521A (enExample)
AU (1) AU1839001A (enExample)
BR (1) BR0100384A (enExample)
CA (1) CA2330985A1 (enExample)
DE (1) DE60001209T2 (enExample)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1504441A4 (en) * 2002-05-13 2005-12-14 Conexant Systems Inc TRANSCODING THE VOICE IN A PACKET SWITCHED NETWORK ENVIRONMENT
FR2839836B1 (fr) * 2002-05-16 2004-09-10 Cit Alcatel Terminal de telecommunication permettant de modifier la voix transmise lors d'une communication telephonique
DE602004014919D1 (de) 2003-04-08 2008-08-21 Nec Corp Codeumsetzungsverfahren und einrichtung
KR20050044837A (ko) * 2004-06-08 2005-05-13 삼성전자주식회사 디지털 방송 데이터 출력 중 통화기능을 처리하는이동통신단말기 및 그 방법
KR100700595B1 (ko) 2005-10-29 2007-03-28 엘지전자 주식회사 청각특성 변경을 지원하는 휴대단말기 및 그 방법
ES2523456T3 (es) * 2005-11-30 2014-11-26 Telefonaktiebolaget L- M Ericsson (Publ) Sistemas y métodos para transmisión de señales de funcionamiento sin tándem
US20070131653A1 (en) * 2005-12-09 2007-06-14 Ettinger Gary C Methods and apparatus for processing a substrate
US20070171816A1 (en) * 2006-01-20 2007-07-26 Lucent Technologies Inc. Method and apparatus for call reroute based upon QoS
US20070291648A1 (en) * 2006-06-15 2007-12-20 Lucent Technologies Inc. VoIP voice quality remote for switch-to-switch connections
US9426569B2 (en) * 2013-06-13 2016-08-23 Blackberry Limited Audio signal bandwidth to codec bandwidth analysis and response
EP3277016B1 (en) * 2016-07-29 2019-09-11 Rohde & Schwarz GmbH & Co. KG Measurement system and a method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0750586A (ja) * 1991-09-10 1995-02-21 At & T Corp 低遅延ｃｅｌｐ符号化方法
JPH08202399A (ja) * 1995-01-27 1996-08-09 Kyocera Corp 復号音声の後処理方法
JPH09190195A (ja) * 1995-09-18 1997-07-22 Toshiba Corp 音声信号のスペクトル形状調整方法および装置
JPH09321783A (ja) * 1996-03-29 1997-12-12 Mitsubishi Electric Corp 音声符号化伝送システム

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569322B1 (fr) * 1984-08-17 1986-12-05 Trt Telecom Radio Electr Annuleur d'echo utilisant la modulation delta
US5694519A (en) 1992-02-18 1997-12-02 Lucent Technologies, Inc. Tunable post-filter for tandem coders
US5790632A (en) * 1994-09-30 1998-08-04 Qualcom Incorporated Method and apparatus for echo canceling accounting for companding induced quantization error
US5903862A (en) * 1995-01-25 1999-05-11 Weaver, Jr.; Lindsay A. Method and apparatus for detection of tandem vocoding to modify vocoder filtering
KR100233463B1 (ko) * 1997-03-07 1999-12-01 윤종용 반향제거장치 및 방법
GB9706174D0 (en) * 1997-03-25 1997-11-19 Secr Defence Recognition system
US5995923A (en) * 1997-06-26 1999-11-30 Nortel Networks Corporation Method and apparatus for improving the voice quality of tandemed vocoders
WO1999013608A2 (en) * 1997-09-10 1999-03-18 Koninklijke Philips Electronics N.V. A communication system and a terminal having speech encoding and decoding means
US6347141B1 (en) * 1998-08-03 2002-02-12 Conexant Systems, Inc. Method of and apparatus for adaptation of an echo canceller in a system with multitasking
US6434235B1 (en) * 2000-08-01 2002-08-13 Lucent Technologies Inc. Acoustic echo canceler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0750586A (ja) * 1991-09-10 1995-02-21 At & T Corp 低遅延ｃｅｌｐ符号化方法
JPH08202399A (ja) * 1995-01-27 1996-08-09 Kyocera Corp 復号音声の後処理方法
JPH09190195A (ja) * 1995-09-18 1997-07-22 Toshiba Corp 音声信号のスペクトル形状調整方法および装置
JPH09321783A (ja) * 1996-03-29 1997-12-12 Mitsubishi Electric Corp 音声符号化伝送システム

Also Published As

Publication number Publication date
KR20010082625A (ko) 2001-08-30
CN1309521A (zh) 2001-08-22
DE60001209T2 (de) 2003-11-13
US7006787B1 (en) 2006-02-28
EP1126439A3 (en) 2001-08-29
BR0100384A (pt) 2001-10-30
EP1126439B1 (en) 2003-01-15
KR100444418B1 (ko) 2004-08-16
AU1839001A (en) 2001-08-16
EP1126439A2 (en) 2001-08-22
CA2330985A1 (en) 2001-08-14
DE60001209D1 (de) 2003-02-20

Similar Documents

Publication Publication Date Title
US8358617B2 (en) Enhanced conversion of wideband signals to narrowband signals
US8432935B2 (en) Tandem-free intersystem voice communication
US6463414B1 (en) Conference bridge processing of speech in a packet network environment
CN1097360C (zh) 数字移动通信系统中的回声消除
CN1249869A (zh) 采用状态判断来控制数字电话系统中的功能元件的方法和装置
US8340959B2 (en) Method and apparatus for transmitting wideband speech signals
US20040243404A1 (en) Method and apparatus for improving voice quality of encoded speech signals in a network
US20070160154A1 (en) Method and apparatus for injecting comfort noise in a communications signal
JP2001272998A (ja) 通信方法とワイヤレス呼接続装置
JP2000209663A (ja) 音声チャネル上で非音声情報を送信する方法
US20060160581A1 (en) Echo suppression for compressed speech with only partial transcoding of the uplink user data stream
EP2572499B1 (en) Encoder adaption in teleconferencing system
WO2001003316A1 (en) Coded domain echo control
US20080160987A1 (en) Methods, systems, and computer program products for silence insertion descriptor (sid) conversion
JP2586441B2 (ja) 移動電話機
US6711259B1 (en) Method and apparatus for noise suppression and side-tone generation
WO2003039069A1 (en) Communication system, user equipment and method of performing a conference call thereof
RU2383940C2 (ru) Устройство предоставления источника звука и способ предоставления источника звука
JP4108396B2 (ja) 多地点制御装置の音声符号化伝送システム
US20060165019A1 (en) Echo-suppression with short delay
KR100684944B1 (ko) 이동통신 시스템에서 전송되는 음성 데이터에 대한 음질 개선 장치 및 방법

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080207

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080207

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20101206

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20110304

A602 Written permission of extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A602

Effective date: 20110309

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110606

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20110606

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20120201