ATE424023T1 - Sprachkodierung mit variabler bit-rate - Google Patents

Sprachkodierung mit variabler bit-rate

Info

Publication number
ATE424023T1
ATE424023T1 AT99967507T AT99967507T ATE424023T1 AT E424023 T1 ATE424023 T1 AT E424023T1 AT 99967507 T AT99967507 T AT 99967507T AT 99967507 T AT99967507 T AT 99967507T AT E424023 T1 ATE424023 T1 AT E424023T1
Authority
AT
Austria
Prior art keywords
speech
modes
coding
bit rate
regions
Prior art date
Application number
AT99967507T
Other languages
English (en)
Inventor
Sharath Manjunath
William Gardner
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Application granted granted Critical
Publication of ATE424023T1 publication Critical patent/ATE424023T1/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
    • G10L19/18—Vocoders using multiple modes
    • 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
    • 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
    • G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals
    • G10L2025/783—Detection of presence or absence of voice signals based on threshold decision
    • 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
    • G10L2025/935—Mixed voiced class; Transitions

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
AT99967507T 1998-12-21 1999-12-21 Sprachkodierung mit variabler bit-rate ATE424023T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/217,341 US6691084B2 (en) 1998-12-21 1998-12-21 Multiple mode variable rate speech coding

Publications (1)

Publication Number Publication Date
ATE424023T1 true ATE424023T1 (de) 2009-03-15

Family

ID=22810659

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99967507T ATE424023T1 (de) 1998-12-21 1999-12-21 Sprachkodierung mit variabler bit-rate

Country Status (11)

Country Link
US (3) US6691084B2 (de)
EP (2) EP2085965A1 (de)
JP (3) JP4927257B2 (de)
KR (1) KR100679382B1 (de)
CN (3) CN100369112C (de)
AT (1) ATE424023T1 (de)
AU (1) AU2377500A (de)
DE (1) DE69940477D1 (de)
ES (1) ES2321147T3 (de)
HK (1) HK1040807B (de)
WO (1) WO2000038179A2 (de)

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US7136812B2 (en) 2006-11-14
EP1141947A2 (de) 2001-10-10
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JP2002533772A (ja) 2002-10-08
AU2377500A (en) 2000-07-12
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CN1331826A (zh) 2002-01-16
WO2000038179A2 (en) 2000-06-29
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CN101178899A (zh) 2008-05-14
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US6691084B2 (en) 2004-02-10
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