AP3147A - Audio decoder and decoding method using efficient downmixing - Google Patents

Audio decoder and decoding method using efficient downmixing

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Publication number
AP3147A
AP3147A AP2011005900A AP2011005900A AP3147A AP 3147 A AP3147 A AP 3147A AP 2011005900 A AP2011005900 A AP 2011005900A AP 2011005900 A AP2011005900 A AP 2011005900A AP 3147 A AP3147 A AP 3147A
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AP
ARIPO
Prior art keywords
decoding method
audio decoder
downmixing
efficient
efficient downmixing
Prior art date
Application number
AP2011005900A
Other languages
English (en)
Other versions
AP2011005900A0 (en
Inventor
James M Silva
Robert L Andersen
Robin Thesing
Original Assignee
Dolby Lab Licensing Corp
Dolby Int Ab
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.)
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Publication date
Application filed by Dolby Lab Licensing Corp, Dolby Int Ab filed Critical Dolby Lab Licensing Corp
Publication of AP2011005900A0 publication Critical patent/AP2011005900A0/xx
Application granted granted Critical
Publication of AP3147A publication Critical patent/AP3147A/xx

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Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L19/008Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L19/02Speech 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
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L19/02Speech 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
    • G10L19/022Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L19/04Speech 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
    • G10L19/06Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L19/04Speech 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
    • G10L19/16Vocoder architecture
    • G10L19/167Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L19/04Speech 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
    • G10L19/16Vocoder architecture
    • G10L19/18Vocoders using multiple modes
    • G10L19/24Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00Stereophonic arrangements
    • H04R5/02Spatial or constructional arrangements of loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04SSTEREOPHONIC SYSTEMS 
    • H04S3/00Systems employing more than two channels, e.g. quadraphonic
    • H04S3/008Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereophonic System (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
AP2011005900A 2010-02-18 2011-02-03 Audio decoder and decoding method using efficient downmixing AP3147A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US30587110P 2010-02-18 2010-02-18
US35976310P 2010-06-29 2010-06-29
PCT/US2011/023533 WO2011102967A1 (en) 2010-02-18 2011-02-03 Audio decoder and decoding method using efficient downmixing

Publications (2)

Publication Number Publication Date
AP2011005900A0 AP2011005900A0 (en) 2011-10-31
AP3147A true AP3147A (en) 2015-03-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
AP2011005900A AP3147A (en) 2010-02-18 2011-02-03 Audio decoder and decoding method using efficient downmixing

Country Status (36)

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US (3) US8214223B2 (sr)
EP (2) EP2698789B1 (sr)
JP (2) JP5501449B2 (sr)
KR (2) KR101707125B1 (sr)
CN (2) CN102428514B (sr)
AP (1) AP3147A (sr)
AR (2) AR080183A1 (sr)
AU (1) AU2011218351B2 (sr)
BR (1) BRPI1105248B1 (sr)
CA (3) CA2757643C (sr)
CO (1) CO6501169A2 (sr)
DK (1) DK2360683T3 (sr)
EA (1) EA025020B1 (sr)
EC (1) ECSP11011358A (sr)
ES (1) ES2467290T3 (sr)
GE (1) GEP20146086B (sr)
GT (1) GT201100246A (sr)
HK (2) HK1160282A1 (sr)
HN (1) HN2011002584A (sr)
HR (1) HRP20140506T1 (sr)
IL (3) IL215254A (sr)
MA (1) MA33270B1 (sr)
ME (1) ME01880B (sr)
MX (1) MX2011010285A (sr)
MY (1) MY157229A (sr)
NI (1) NI201100175A (sr)
NZ (1) NZ595739A (sr)
PE (1) PE20121261A1 (sr)
PL (1) PL2360683T3 (sr)
PT (1) PT2360683E (sr)
RS (1) RS53336B (sr)
SG (1) SG174552A1 (sr)
SI (1) SI2360683T1 (sr)
TW (2) TWI443646B (sr)
WO (1) WO2011102967A1 (sr)
ZA (1) ZA201106950B (sr)

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