CN101178899B - 可变速率语音编码 - Google Patents

可变速率语音编码 Download PDF

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Publication number
CN101178899B
CN101178899B CN2007101621095A CN200710162109A CN101178899B CN 101178899 B CN101178899 B CN 101178899B CN 2007101621095 A CN2007101621095 A CN 2007101621095A CN 200710162109 A CN200710162109 A CN 200710162109A CN 101178899 B CN101178899 B CN 101178899B
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voice
voice signal
signal
coding
efficient
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Expired - Lifetime
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Chinese (zh)
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CN101178899A (zh
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S·曼朱那什
W·加德纳
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Qualcomm Inc
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Qualcomm Inc
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    • 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
    • G10L19/04—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 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
    • G10L19/04—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 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
    • G10L19/04—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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
CN2007101621095A 1998-12-21 1999-12-21 可变速率语音编码 Expired - Lifetime CN101178899B (zh)

Applications Claiming Priority (2)

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

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CNB998148199A Division CN100369112C (zh) 1998-12-21 1999-12-21 可变速率语音编码

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CN101178899B true CN101178899B (zh) 2012-07-04

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CN201210082801.8A Expired - Lifetime CN102623015B (zh) 1998-12-21 1999-12-21 可变速率语音编码
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CN201210082801.8A Expired - Lifetime CN102623015B (zh) 1998-12-21 1999-12-21 可变速率语音编码

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US (3) US6691084B2 (US06691084-20040210-M00002.png)
EP (2) EP1141947B1 (US06691084-20040210-M00002.png)
JP (3) JP4927257B2 (US06691084-20040210-M00002.png)
KR (1) KR100679382B1 (US06691084-20040210-M00002.png)
CN (3) CN100369112C (US06691084-20040210-M00002.png)
AT (1) ATE424023T1 (US06691084-20040210-M00002.png)
AU (1) AU2377500A (US06691084-20040210-M00002.png)
DE (1) DE69940477D1 (US06691084-20040210-M00002.png)
ES (1) ES2321147T3 (US06691084-20040210-M00002.png)
HK (1) HK1040807B (US06691084-20040210-M00002.png)
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US20040102969A1 (en) 2004-05-27
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JP5373217B2 (ja) 2013-12-18
KR20010093210A (ko) 2001-10-27
ATE424023T1 (de) 2009-03-15
EP1141947B1 (en) 2009-02-25
EP2085965A1 (en) 2009-08-05
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JP4927257B2 (ja) 2012-05-09
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US20020099548A1 (en) 2002-07-25
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US7136812B2 (en) 2006-11-14
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