EG23923A - Methods and devices for source controlled variablebit-rate widband speech coding - Google Patents

Methods and devices for source controlled variablebit-rate widband speech coding

Info

Publication number
EG23923A
EG23923A EGNA2005000110A EG23923A EG 23923 A EG23923 A EG 23923A EG NA2005000110 A EGNA2005000110 A EG NA2005000110A EG 23923 A EG23923 A EG 23923A
Authority
EG
Egypt
Prior art keywords
rate
wideband
amr
codec
mode
Prior art date
Application number
Other languages
English (en)
Inventor
Jelinek Milan
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 EG23923A publication Critical patent/EG23923A/xx

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
    • G10L19/012—Comfort noise or silence coding
    • 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
    • G10L19/18—Vocoders using multiple modes
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/93—Discriminating between voiced and unvoiced parts of speech signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Studio Devices (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
EGNA2005000110 2002-10-11 2005-04-06 Methods and devices for source controlled variablebit-rate widband speech coding EG23923A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US41766702P 2002-10-11 2002-10-11
PCT/CA2003/001571 WO2004034379A2 (en) 2002-10-11 2003-10-09 Methods and devices for source controlled variable bit-rate wideband speech coding

Publications (1)

Publication Number Publication Date
EG23923A true EG23923A (en) 2007-12-30

Family

ID=32094059

Family Applications (1)

Application Number Title Priority Date Filing Date
EGNA2005000110 EG23923A (en) 2002-10-11 2005-04-06 Methods and devices for source controlled variablebit-rate widband speech coding

Country Status (15)

Country Link
US (1) US7203638B2 (xx)
EP (2) EP1550108A2 (xx)
JP (2) JP2006502426A (xx)
KR (2) KR100711280B1 (xx)
CN (2) CN1703736A (xx)
AT (1) ATE505786T1 (xx)
AU (2) AU2003278013A1 (xx)
BR (2) BR0315179A (xx)
CA (2) CA2501368C (xx)
DE (1) DE60336744D1 (xx)
EG (1) EG23923A (xx)
ES (1) ES2361154T3 (xx)
MY (2) MY134085A (xx)
RU (2) RU2331933C2 (xx)
WO (2) WO2004034379A2 (xx)

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Also Published As

Publication number Publication date
US20050267746A1 (en) 2005-12-01
BR0315216A (pt) 2005-08-16
MY134085A (en) 2007-11-30
WO2004034376A2 (en) 2004-04-22
JP2006502426A (ja) 2006-01-19
JP2006502427A (ja) 2006-01-19
WO2004034376A3 (en) 2004-06-10
WO2004034379A3 (en) 2004-12-23
AU2003278014A8 (en) 2004-05-04
WO2004034379A2 (en) 2004-04-22
DE60336744D1 (de) 2011-05-26
ES2361154T3 (es) 2011-06-14
RU2331933C2 (ru) 2008-08-20
EP1550108A2 (en) 2005-07-06
US7203638B2 (en) 2007-04-10
CN1703737B (zh) 2013-05-15
CA2501368C (en) 2013-06-25
AU2003278013A8 (en) 2004-05-04
KR20050049537A (ko) 2005-05-25
BR0315179A (pt) 2005-08-23
RU2005113876A (ru) 2005-10-10
AU2003278013A1 (en) 2004-05-04
KR20050049538A (ko) 2005-05-25
RU2351907C2 (ru) 2009-04-10
CA2501368A1 (en) 2004-04-22
KR100711280B1 (ko) 2007-04-25
CN1703736A (zh) 2005-11-30
AU2003278014A1 (en) 2004-05-04
MY138212A (en) 2009-05-29
EP1554718A2 (en) 2005-07-20
EP1554718B1 (en) 2011-04-13
RU2005113877A (ru) 2005-10-10
CN1703737A (zh) 2005-11-30
ATE505786T1 (de) 2011-04-15
CA2501369A1 (en) 2004-04-22

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