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EA201171268A1 - Аудиодекодер и способ декодирования с использованием эффективного понижающего микширования - Google Patents

Аудиодекодер и способ декодирования с использованием эффективного понижающего микширования

Info

Publication number
EA201171268A1
EA201171268A1 EA201171268A EA201171268A EA201171268A1 EA 201171268 A1 EA201171268 A1 EA 201171268A1 EA 201171268 A EA201171268 A EA 201171268A EA 201171268 A EA201171268 A EA 201171268A EA 201171268 A1 EA201171268 A1 EA 201171268A1
Authority
EA
Eurasian Patent Office
Prior art keywords
data
mix
frequency domain
mixing
decoding method
Prior art date
Application number
EA201171268A
Other languages
English (en)
Other versions
EA025020B1 (ru
Inventor
Робин ТЕЗИНГ
Джеймз М. Силва
Роберт Л. Андерсен
Original Assignee
Долби Лабораторис Лайсэнзин Корпорейшн
Долби Интернешнл Аб
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43877072&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EA201171268(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Долби Лабораторис Лайсэнзин Корпорейшн, Долби Интернешнл Аб filed Critical Долби Лабораторис Лайсэнзин Корпорейшн
Publication of EA201171268A1 publication Critical patent/EA201171268A1/ru
Publication of EA025020B1 publication Critical patent/EA025020B1/ru

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
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • 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
    • G10L19/02—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 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
    • G10L19/02—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
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS 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
    • G10L19/167—Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/008—Systems 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)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereophonic System (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

Способ, устройство и машиночитаемый носитель данных, сконфигурированный посредством команд для осуществления способа, и логика, кодированная на одном или нескольких машиночитаемых материальных носителях данных, для осуществления действий. Способ заключается в декодировании аудиоданных, которые включают N.n каналов в М.m декодированных аудиоканалов, и включает распаковку метаданных и распаковку и декодирование данных экспонент и мантисс в частотной области; определение коэффициентов преобразования из распакованных и декодированных данных экспонент и мантисс в частотной области; обратное преобразование данных в частотной области и, в случае M<N, понижающее микширование в соответствии с данными понижающего микширования, где понижающее микширование осуществляется эффективно.
EA201171268A 2010-02-18 2011-02-03 Аудиодекодер и способ декодирования с использованием эффективного понижающего микширования EA025020B1 (ru)

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
EA201171268A1 true EA201171268A1 (ru) 2012-03-30
EA025020B1 EA025020B1 (ru) 2016-11-30

Family

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EA201171268A EA025020B1 (ru) 2010-02-18 2011-02-03 Аудиодекодер и способ декодирования с использованием эффективного понижающего микширования

Country Status (36)

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US (3) US8214223B2 (ru)
EP (2) EP2360683B1 (ru)
JP (2) JP5501449B2 (ru)
KR (2) KR101327194B1 (ru)
CN (2) CN102428514B (ru)
AP (1) AP3147A (ru)
AR (2) AR080183A1 (ru)
AU (1) AU2011218351B2 (ru)
BR (1) BRPI1105248B1 (ru)
CA (3) CA2757643C (ru)
CO (1) CO6501169A2 (ru)
DK (1) DK2360683T3 (ru)
EA (1) EA025020B1 (ru)
EC (1) ECSP11011358A (ru)
ES (1) ES2467290T3 (ru)
GE (1) GEP20146086B (ru)
GT (1) GT201100246A (ru)
HK (2) HK1160282A1 (ru)
HN (1) HN2011002584A (ru)
HR (1) HRP20140506T1 (ru)
IL (3) IL215254A (ru)
MA (1) MA33270B1 (ru)
ME (1) ME01880B (ru)
MX (1) MX2011010285A (ru)
MY (1) MY157229A (ru)
NI (1) NI201100175A (ru)
NZ (1) NZ595739A (ru)
PE (1) PE20121261A1 (ru)
PL (1) PL2360683T3 (ru)
PT (1) PT2360683E (ru)
RS (1) RS53336B (ru)
SG (1) SG174552A1 (ru)
SI (1) SI2360683T1 (ru)
TW (2) TWI557723B (ru)
WO (1) WO2011102967A1 (ru)
ZA (1) ZA201106950B (ru)

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