ATE289738T1 - Transkodierer mit verhütung von kaskadenkodierung von sprachsignalen - Google Patents

Transkodierer mit verhütung von kaskadenkodierung von sprachsignalen

Info

Publication number
ATE289738T1
ATE289738T1 AT96910043T AT96910043T ATE289738T1 AT E289738 T1 ATE289738 T1 AT E289738T1 AT 96910043 T AT96910043 T AT 96910043T AT 96910043 T AT96910043 T AT 96910043T AT E289738 T1 ATE289738 T1 AT E289738T1
Authority
AT
Austria
Prior art keywords
speech
pcm
transcoder
mobile
coding
Prior art date
Application number
AT96910043T
Other languages
English (en)
Inventor
Matti Lehtimaeki
Original Assignee
Nokia Corp
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 Nokia Corp filed Critical Nokia Corp
Application granted granted Critical
Publication of ATE289738T1 publication Critical patent/ATE289738T1/de

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
    • 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
    • G10L19/16—Vocoder architecture
    • G10L19/173—Transcoding, i.e. converting between two coded representations avoiding cascaded coding-decoding
    • 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
    • G10L19/16—Vocoder architecture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices
    • H04W88/181—Transcoding devices; Rate adaptation devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Dc Digital Transmission (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Camera Data Copying Or Recording (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
AT96910043T 1995-04-13 1996-04-11 Transkodierer mit verhütung von kaskadenkodierung von sprachsignalen ATE289738T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI951807A FI101439B (fi) 1995-04-13 1995-04-13 Transkooderi, jossa on tandem-koodauksen esto
PCT/FI1996/000192 WO1996032823A1 (en) 1995-04-13 1996-04-11 Transcoder with prevention of tandem coding of speech

Publications (1)

Publication Number Publication Date
ATE289738T1 true ATE289738T1 (de) 2005-03-15

Family

ID=8543252

Family Applications (1)

Application Number Title Priority Date Filing Date
AT96910043T ATE289738T1 (de) 1995-04-13 1996-04-11 Transkodierer mit verhütung von kaskadenkodierung von sprachsignalen

Country Status (11)

Country Link
US (1) US5991716A (de)
EP (2) EP0820685B1 (de)
JP (1) JPH11503582A (de)
CN (1) CN1109459C (de)
AT (1) ATE289738T1 (de)
AU (1) AU705619B2 (de)
DE (1) DE69634381T2 (de)
ES (2) ES2237765T3 (de)
FI (1) FI101439B (de)
NO (1) NO321398B1 (de)
WO (1) WO1996032823A1 (de)

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US6850883B1 (en) 1998-02-09 2005-02-01 Nokia Networks Oy Decoding method, speech coding processing unit and a network element
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WO2000046789A1 (fr) * 1999-02-05 2000-08-10 Fujitsu Limited Detecteur de la presence d'un son et procede de detection de la presence et/ou de l'absence d'un son
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US6657996B1 (en) * 1999-04-21 2003-12-02 Telogy Networks, Inc. Apparatus and method for improving voice quality by removing tandem codecs in a voice communication link
US6292781B1 (en) * 1999-05-28 2001-09-18 Motorola Method and apparatus for facilitating distributed speech processing in a communication system
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SE522356C2 (sv) * 1999-07-09 2004-02-03 Ericsson Telefon Ab L M Transmission av komprimerad information med realtidskrav i ett paketorienterat informationsnät
FI991605A (fi) * 1999-07-14 2001-01-15 Nokia Networks Oy Menetelmä puhekodaukseen ja puhekoodaukseen tarvittavan laskentakapasi teetin vähentämiseksi ja verkkoelementti
EP1069738A1 (de) * 1999-07-16 2001-01-17 Alcatel Netzdurchgangsvorrichtung mit Transkodierungsmitteln
GB2353192B (en) * 1999-08-11 2004-02-25 Ericsson Telefon Ab L M Transcoder rate controller
FI109508B (fi) * 1999-09-28 2002-08-15 Nokia Corp Menetelmä Abis-rajapinnan transmissiokanavien allokoimiseksi pakettisolukkoradioverkossa ja pakettisolukkoradioverkon verkko-osa
WO2001024549A2 (en) * 1999-09-30 2001-04-05 Nokia Corporation Voice over pcm technique providing compatibility between pcm data and lower rate vocoder data
US6542546B1 (en) 2000-02-02 2003-04-01 Mitsubishi Electric Research Laboratories, Inc. Adaptable compressed bitstream transcoder
JP4421187B2 (ja) * 2000-08-21 2010-02-24 富士通株式会社 通信システム
US6721538B1 (en) * 2000-10-05 2004-04-13 Hughes Electronics Corporation Time-offset distribution to ensure constant satellite power
US6708147B2 (en) * 2001-02-28 2004-03-16 Telefonaktiebolaget Lm Ericsson(Publ) Method and apparatus for providing comfort noise in communication system with discontinuous transmission
US7012901B2 (en) * 2001-02-28 2006-03-14 Cisco Systems, Inc. Devices, software and methods for generating aggregate comfort noise in teleconferencing over VoIP networks
JP4518714B2 (ja) * 2001-08-31 2010-08-04 富士通株式会社 音声符号変換方法
KR100460109B1 (ko) * 2001-09-19 2004-12-03 엘지전자 주식회사 음성패킷 변환을 위한 ｌｓｐ 파라미터 변환장치 및 방법
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EP1518427B1 (de) * 2002-05-31 2006-04-26 Siemens Aktiengesellschaft Abfrage der aktuell gültigen bitraten bei unterbrechung eines trfo-calls (anrufs)
JP2004061646A (ja) * 2002-07-25 2004-02-26 Fujitsu Ltd Ｔｆｏ機能を有する音声符号化器および方法
JP2004069963A (ja) * 2002-08-06 2004-03-04 Fujitsu Ltd 音声符号変換装置及び音声符号化装置
US7808920B2 (en) 2002-10-28 2010-10-05 Qualcomm Incorporated Tandem-free vocoder operations between non-compatible communication systems
KR100451622B1 (ko) * 2002-11-11 2004-10-08 한국전자통신연구원 통신용 보코더 및 이를 이용한 통신 방법
JP2006522949A (ja) * 2003-04-08 2006-10-05 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 埋め込みデータ・チャンネルの更新
JP4370802B2 (ja) 2003-04-22 2009-11-25 富士通株式会社 データ処理方法およびデータ処理装置
GB0408856D0 (en) * 2004-04-21 2004-05-26 Nokia Corp Signal encoding
FR2881867A1 (fr) * 2005-02-04 2006-08-11 France Telecom Procede de transmission de marques de fin de parole dans un systeme de reconnaissance de la parole
JP4793539B2 (ja) * 2005-03-29 2011-10-12 日本電気株式会社 符号変換方法及び装置とプログラム並びにその記憶媒体
US8620465B2 (en) * 2006-10-13 2013-12-31 Auro Technologies Method and encoder for combining digital data sets, a decoding method and decoder for such combined digital data sets and a record carrier for storing such combined digital data set
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CN101783142B (zh) * 2009-01-21 2012-08-15 北京工业大学 转码方法、装置和通信设备
CN102668411B (zh) * 2009-02-09 2014-07-09 华为技术有限公司 Dtx比特的映射方法和设备
WO2014096280A1 (en) 2012-12-21 2014-06-26 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Comfort noise addition for modeling background noise at low bit-rates
BR112015014212B1 (pt) * 2012-12-21 2021-10-19 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Geração de um ruído de conforto com alta resolução espectro-temporal em transmissão descontínua de sinais de audio
CN107424621B (zh) 2014-06-24 2021-10-26 华为技术有限公司 音频编码方法和装置

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US6134521A (en) * 1994-02-17 2000-10-17 Motorola, Inc. Method and apparatus for mitigating audio degradation in a communication system
FI941125A (fi) * 1994-03-09 1995-09-10 Nokia Telecommunications Oy Matkaviestinjärjestelmä ja puhelunohjausmenetelmä

Also Published As

Publication number Publication date
AU5336396A (en) 1996-10-30
JPH11503582A (ja) 1999-03-26
EP1533790A1 (de) 2005-05-25
AU705619B2 (en) 1999-05-27
NO974705D0 (no) 1997-10-10
DE69634381T2 (de) 2006-01-12
DE69634381D1 (de) 2005-03-31
ES2237765T3 (es) 2005-08-01
CN1185262A (zh) 1998-06-17
CN1109459C (zh) 2003-05-21
ES2491890T3 (es) 2014-09-08
FI951807A0 (fi) 1995-04-13
FI101439B1 (fi) 1998-06-15
NO321398B1 (no) 2006-05-08
EP1533790B1 (de) 2014-06-18
FI101439B (fi) 1998-06-15
FI951807A (fi) 1996-10-14
US5991716A (en) 1999-11-23
EP0820685A1 (de) 1998-01-28
EP0820685B1 (de) 2005-02-23
WO1996032823A1 (en) 1996-10-17
NO974705L (no) 1997-12-11

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