NO20073892L - Parametrisk felleskoding av audiokilder - Google Patents

Parametrisk felleskoding av audiokilder

Info

Publication number
NO20073892L
NO20073892L NO20073892A NO20073892A NO20073892L NO 20073892 L NO20073892 L NO 20073892L NO 20073892 A NO20073892 A NO 20073892A NO 20073892 A NO20073892 A NO 20073892A NO 20073892 L NO20073892 L NO 20073892L
Authority
NO
Norway
Prior art keywords
source signals
coding
properties
signals
statistical properties
Prior art date
Application number
NO20073892A
Other languages
English (en)
Other versions
NO338701B1 (no
Inventor
Christof Faller
Original Assignee
Fraunhofer Ges Forschung
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=34938725&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=NO20073892(L) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of NO20073892L publication Critical patent/NO20073892L/no
Publication of NO338701B1 publication Critical patent/NO338701B1/no

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
    • G10L19/02—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
    • G10L19/008—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
    • G10L19/0204—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 using subband decomposition
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/307—Frequency adjustment, e.g. tone control
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/233—Processing of audio elementary streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/03—Application of parametric coding in stereophonic audio systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/13—Application of wave-field synthesis in stereophonic audio systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Mathematical Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Stereophonic System (AREA)

Abstract

Et kodescenarium som elder flere audiokildesignaler som skal sendes eller lagres, i den hensikt å blande bølgefeltsyntese, multikanalsurroundsignaler eller stereosignaler etter dekoding av kildesignalene. Den foreslåtte teknikk foreslår signifikant kodegevinst når man bruker felles koding av kildesignalene, i forhold til separat koding av dem, selv dersom ingen redundans foreligger mellom de enkelte kildesignaler. Dette muliggjøres ved å betrakte statiske egenskaper hos kildesignalene, egenskapene hos blandeteknikkene og lytting til et tredimensjonalt lydbilde. Summen av kildesignalene overføres sammen med de statiske egenskaper for dem, idet disse egenskaper i alt vesentlig bestemmer de oppfattelsesmessig viktige romkøer for de ferdig blandede audiokanaler. Kildesignalene gjenopprettes i mottakeren slik at deres statiske egenskaper tilnærmet blir de samme som for originalkildesignalene. Subjektive evalueringer indikerer at man bar man oppnådd en god audiokvalitet ved hjelp av det foreslåtte scenarium eller skjema.
NO20073892A 2005-02-14 2007-07-24 Parametrisk felleskoding av audiokilder NO338701B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05101055A EP1691348A1 (en) 2005-02-14 2005-02-14 Parametric joint-coding of audio sources
PCT/EP2006/050904 WO2006084916A2 (en) 2005-02-14 2006-02-13 Parametric joint-coding of audio sources

Publications (2)

Publication Number Publication Date
NO20073892L true NO20073892L (no) 2007-11-14
NO338701B1 NO338701B1 (no) 2016-10-03

Family

ID=34938725

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20073892A NO338701B1 (no) 2005-02-14 2007-07-24 Parametrisk felleskoding av audiokilder

Country Status (18)

Country Link
US (12) US8355509B2 (no)
EP (4) EP1691348A1 (no)
JP (2) JP5179881B2 (no)
KR (1) KR100924577B1 (no)
CN (2) CN101133441B (no)
AT (1) ATE531035T1 (no)
AU (3) AU2006212191B2 (no)
BR (5) BR122018072508B1 (no)
CA (2) CA2597746C (no)
ES (2) ES2374434T3 (no)
HK (2) HK1107723A1 (no)
IL (1) IL185192A (no)
MX (1) MX2007009559A (no)
NO (1) NO338701B1 (no)
PL (1) PL1844465T3 (no)
RU (1) RU2376654C2 (no)
TR (1) TR201811059T4 (no)
WO (1) WO2006084916A2 (no)

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