WO2007011657A3 - Modification of codewords in dictionary used for efficient coding of digital media spectral data - Google Patents

Modification of codewords in dictionary used for efficient coding of digital media spectral data Download PDF

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Publication number
WO2007011657A3
WO2007011657A3 PCT/US2006/027238 US2006027238W WO2007011657A3 WO 2007011657 A3 WO2007011657 A3 WO 2007011657A3 US 2006027238 W US2006027238 W US 2006027238W WO 2007011657 A3 WO2007011657 A3 WO 2007011657A3
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WO
WIPO (PCT)
Prior art keywords
code
spectral data
vector
codewords
modification
Prior art date
Application number
PCT/US2006/027238
Other languages
French (fr)
Other versions
WO2007011657A2 (en
Inventor
Sanjeev Mehrotra
Wei-Ge Chen
Kazuhito Koishida
Original Assignee
Microsoft 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 Microsoft Corp filed Critical Microsoft Corp
Priority to MX2008000528A priority Critical patent/MX2008000528A/en
Priority to KR1020087001019A priority patent/KR101330362B1/en
Priority to CN2006800258074A priority patent/CN101223582B/en
Priority to EP06787180.6A priority patent/EP1905011B1/en
Priority to CA2612474A priority patent/CA2612474C/en
Priority to ES06787180.6T priority patent/ES2627212T3/en
Priority to JP2008521612A priority patent/JP5456310B2/en
Priority to AU2006270263A priority patent/AU2006270263B2/en
Publication of WO2007011657A2 publication Critical patent/WO2007011657A2/en
Publication of WO2007011657A3 publication Critical patent/WO2007011657A3/en
Priority to NO20076260A priority patent/NO340485B1/en

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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
    • 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
    • G10L19/032—Quantisation or dequantisation of spectral components
    • G10L19/038—Vector quantisation, e.g. TwinVQ audio
    • 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
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • 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

Abstract

Coding of spectral data by representing certain portions of the spectral data as a scaled version of a code-vector, where the code-vector is chosen from either a fixed predetermined codebook or a codebook taken from a baseband. Various optional features are described for modifying the code-vectors in the codebook according to some rules which allow the code-vector to better represent the data they are modeling. The code-vector modification comprises a linear or non-linear transform of one or more code-vectors, such as, by exponentiation, negation, reversing, or combining elements from plural code-vectors.
PCT/US2006/027238 2005-07-15 2006-07-14 Modification of codewords in dictionary used for efficient coding of digital media spectral data WO2007011657A2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
MX2008000528A MX2008000528A (en) 2005-07-15 2006-07-14 Modification of codewords in dictionary used for efficient coding of digital media spectral data.
KR1020087001019A KR101330362B1 (en) 2005-07-15 2006-07-14 Modification of codewords in dictionary used for efficient coding of digital media spectral data
CN2006800258074A CN101223582B (en) 2005-07-15 2006-07-14 Audio frequency coding method, audio frequency decoding method and audio frequency encoder
EP06787180.6A EP1905011B1 (en) 2005-07-15 2006-07-14 Modification of codewords in dictionary used for efficient coding of digital media spectral data
CA2612474A CA2612474C (en) 2005-07-15 2006-07-14 Modification of codewords in dictionary used for efficient coding of digital media spectral data
ES06787180.6T ES2627212T3 (en) 2005-07-15 2006-07-14 Modification of code words in dictionary used for efficient coding of digital media spectral data
JP2008521612A JP5456310B2 (en) 2005-07-15 2006-07-14 Changing codewords in a dictionary used for efficient coding of digital media spectral data
AU2006270263A AU2006270263B2 (en) 2005-07-15 2006-07-14 Modification of codewords in dictionary used for efficient coding of digital media spectral data
NO20076260A NO340485B1 (en) 2005-07-15 2007-12-05 Modification of password in dictionary used for efficient coding of spectral data from digital media

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/183,084 2005-07-15
US11/183,084 US7562021B2 (en) 2005-07-15 2005-07-15 Modification of codewords in dictionary used for efficient coding of digital media spectral data

Publications (2)

Publication Number Publication Date
WO2007011657A2 WO2007011657A2 (en) 2007-01-25
WO2007011657A3 true WO2007011657A3 (en) 2007-10-11

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PCT/US2006/027238 WO2007011657A2 (en) 2005-07-15 2006-07-14 Modification of codewords in dictionary used for efficient coding of digital media spectral data

Country Status (11)

Country Link
US (1) US7562021B2 (en)
EP (1) EP1905011B1 (en)
JP (1) JP5456310B2 (en)
KR (1) KR101330362B1 (en)
CN (1) CN101223582B (en)
AU (1) AU2006270263B2 (en)
CA (1) CA2612474C (en)
ES (1) ES2627212T3 (en)
MX (1) MX2008000528A (en)
NO (1) NO340485B1 (en)
WO (1) WO2007011657A2 (en)

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