CA2330985A1 - Mobile to mobile digital wireless connection having enhanced voice quality - Google Patents

Mobile to mobile digital wireless connection having enhanced voice quality Download PDF

Info

Publication number
CA2330985A1
CA2330985A1 CA002330985A CA2330985A CA2330985A1 CA 2330985 A1 CA2330985 A1 CA 2330985A1 CA 002330985 A CA002330985 A CA 002330985A CA 2330985 A CA2330985 A CA 2330985A CA 2330985 A1 CA2330985 A1 CA 2330985A1
Authority
CA
Canada
Prior art keywords
voice signal
adaptive filter
voice
modified
decoder
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.)
Abandoned
Application number
CA002330985A
Other languages
English (en)
French (fr)
Inventor
Mahmoud Ragaei Sherif
Ahmed A. Tarraf
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 CA2330985A1 publication Critical patent/CA2330985A1/en
Abandoned 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)
CA002330985A 2000-02-14 2001-01-15 Mobile to mobile digital wireless connection having enhanced voice quality Abandoned CA2330985A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/503,990 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 (1)

Publication Number Publication Date
CA2330985A1 true CA2330985A1 (en) 2001-08-14

Family

ID=24004388

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002330985A Abandoned CA2330985A1 (en) 2000-02-14 2001-01-15 Mobile to mobile digital wireless connection having enhanced voice quality

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
CN1653515A (zh) * 2002-05-13 2005-08-10 迈恩斯比德技术股份有限公司 在分组网络环境中的语音传输编码
FR2839836B1 (fr) 2002-05-16 2004-09-10 Cit Alcatel Terminal de telecommunication permettant de modifier la voix transmise lors d'une communication telephonique
CN100578616C (zh) * 2003-04-08 2010-01-06 日本电气株式会社 代码转换方法和设备
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
CN101322423B (zh) * 2005-11-30 2011-12-14 艾利森电话股份有限公司 用于无级联操作信号传送的系统和方法
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

Family Cites Families (14)

* 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
US5233660A (en) * 1991-09-10 1993-08-03 At&T Bell Laboratories Method and apparatus for low-delay celp speech coding and decoding
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
JPH08202399A (ja) * 1995-01-27 1996-08-09 Kyocera Corp 復号音声の後処理方法
JP3426871B2 (ja) * 1995-09-18 2003-07-14 株式会社東芝 音声信号のスペクトル形状調整方法および装置
JP3157116B2 (ja) * 1996-03-29 2001-04-16 三菱電機株式会社 音声符号化伝送システム
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
CN1134904C (zh) * 1997-09-10 2004-01-14 塞尔隆法国股份有限公司 通信系统和终端
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

Also Published As

Publication number Publication date
DE60001209D1 (de) 2003-02-20
KR100444418B1 (ko) 2004-08-16
CN1309521A (zh) 2001-08-22
EP1126439A3 (en) 2001-08-29
US7006787B1 (en) 2006-02-28
DE60001209T2 (de) 2003-11-13
EP1126439B1 (en) 2003-01-15
KR20010082625A (ko) 2001-08-30
BR0100384A (pt) 2001-10-30
JP2001272998A (ja) 2001-10-05
EP1126439A2 (en) 2001-08-22
AU1839001A (en) 2001-08-16

Similar Documents

Publication Publication Date Title
US6463414B1 (en) Conference bridge processing of speech in a packet network environment
MXPA04007668A (es) Comunicacion de voz de inter-sistemas de tandem libre.
US8340959B2 (en) Method and apparatus for transmitting wideband speech signals
US7006787B1 (en) Mobile to mobile digital wireless connection having enhanced voice quality
US20040243404A1 (en) Method and apparatus for improving voice quality of encoded speech signals in a network
WO2008051401A1 (en) Method and apparatus for injecting comfort noise in a communications signal
JP2010503325A (ja) パケットベースのエコー除去および抑制
EP0929891A1 (en) Methods and devices for noise conditioning signals representative of audio information in compressed and digitized form
KR20000053407A (ko) 음성 채널을 통한 비음성 정보 전송 방법
WO2001003316A1 (en) Coded domain echo control
US9258429B2 (en) Encoder adaption in teleconferencing system
KR20050088198A (ko) 업링크 사용자 데이터 스트림의 부분적 트랜스코딩만을포함하는, 압축된 음성에 대한 에코 억제 방법 및 장치
US20060217972A1 (en) Method and apparatus for modifying an encoded signal
US20060217969A1 (en) Method and apparatus for echo suppression
US8874437B2 (en) Method and apparatus for modifying an encoded signal for voice quality enhancement
JP2586441B2 (ja) 移動電話機
US20060217970A1 (en) Method and apparatus for noise reduction
US20060217988A1 (en) Method and apparatus for adaptive level control
US20060217971A1 (en) Method and apparatus for modifying an encoded signal
US6711259B1 (en) Method and apparatus for noise suppression and side-tone generation
Decina et al. CCITT standards on digital speech processing
US7715365B2 (en) Vocoder and communication method using the same
Chandran et al. Compressed domain noise reduction and echo suppression for network speech enhancement
JP4108396B2 (ja) 多地点制御装置の音声符号化伝送システム
Rages et al. Limits on echo return loss enhancement on a voice coded speech signal

Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued