AU2001295916A1 - Audio signal encoder - Google Patents

Audio signal encoder

Info

Publication number
AU2001295916A1
AU2001295916A1 AU2001295916A AU9591601A AU2001295916A1 AU 2001295916 A1 AU2001295916 A1 AU 2001295916A1 AU 2001295916 A AU2001295916 A AU 2001295916A AU 9591601 A AU9591601 A AU 9591601A AU 2001295916 A1 AU2001295916 A1 AU 2001295916A1
Authority
AU
Australia
Prior art keywords
audio signal
signal encoder
encoder
audio
signal
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
AU2001295916A
Inventor
Toshiyuki Nomura
Yuichiro Takamizawa
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Publication of AU2001295916A1 publication Critical patent/AU2001295916A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0212—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 spectral analysis, e.g. transform vocoders or subband vocoders using orthogonal transformation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0204—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 spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/002—Dynamic bit allocation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
AU2001295916A 2000-10-19 2001-10-11 Audio signal encoder Abandoned AU2001295916A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2000319699A JP2002135122A (en) 2000-10-19 2000-10-19 Audio signal coding apparatus
JP2000-319699 2000-10-19
PCT/JP2001/008920 WO2002033831A1 (en) 2000-10-19 2001-10-11 Audio signal encoder

Publications (1)

Publication Number Publication Date
AU2001295916A1 true AU2001295916A1 (en) 2002-04-29

Family

ID=18798113

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001295916A Abandoned AU2001295916A1 (en) 2000-10-19 2001-10-11 Audio signal encoder

Country Status (5)

Country Link
US (1) US7343292B2 (en)
JP (1) JP2002135122A (en)
AU (1) AU2001295916A1 (en)
TW (1) TW530465B (en)
WO (1) WO2002033831A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10230809B4 (en) * 2002-07-08 2008-09-11 T-Mobile Deutschland Gmbh Method for transmitting audio signals according to the method of prioritizing pixel transmission
JP4239060B2 (en) * 2002-08-30 2009-03-18 ソニー株式会社 Encoding apparatus and method, data processing apparatus and method, and program
JP4548348B2 (en) * 2006-01-18 2010-09-22 カシオ計算機株式会社 Speech coding apparatus and speech coding method
US8548815B2 (en) * 2007-09-19 2013-10-01 Qualcomm Incorporated Efficient design of MDCT / IMDCT filterbanks for speech and audio coding applications
JP5384952B2 (en) * 2009-01-15 2014-01-08 Ｋｄｄｉ株式会社 Feature amount extraction apparatus, feature amount extraction method, and program
CN104681032B (en) * 2013-11-28 2018-05-11 中国移动通信集团公司 A kind of voice communication method and equipment

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3341659A (en) * 1964-01-24 1967-09-12 Burroughs Corp Controlled bandwidth coded voice communication system
US4588979A (en) * 1984-10-05 1986-05-13 Dbx, Inc. Analog-to-digital converter
JPH0697447B2 (en) 1985-09-18 1994-11-30 富士通株式会社 Communication controller of processing device
JPH057774Y2 (en) * 1985-10-11 1993-02-26
JPS62274809A (en) 1986-05-16 1987-11-28 ア−・エヌ・テ−・ナツハリヒテンテヒニ−ク・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Filter
US4969192A (en) * 1987-04-06 1990-11-06 Voicecraft, Inc. Vector adaptive predictive coder for speech and audio
DK0513860T3 (en) * 1989-01-27 1997-08-18 Dolby Lab Licensing Corp Adaptive bi-allocation for audio and decoder
JP3033156B2 (en) * 1990-08-24 2000-04-17 ソニー株式会社 Digital signal coding device
JPH04313964A (en) 1991-01-11 1992-11-05 Canon Inc Video signal processing circuit
JP2763982B2 (en) 1992-03-13 1998-06-11 富士通株式会社 Transmission signal processing method
JP3334374B2 (en) 1994-10-28 2002-10-15 ソニー株式会社 Digital signal compression method and apparatus
JPH08237130A (en) 1995-02-23 1996-09-13 Sony Corp Method and device for signal coding and recording medium
JPH09187005A (en) 1995-12-28 1997-07-15 Canon Inc Coder

Also Published As

Publication number Publication date
JP2002135122A (en) 2002-05-10
US20040049378A1 (en) 2004-03-11
US7343292B2 (en) 2008-03-11
TW530465B (en) 2003-05-01
WO2002033831A1 (en) 2002-04-25

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