WO2009048239A3 - Encoding and decoding method using variable subband analysis and apparatus thereof - Google Patents

Encoding and decoding method using variable subband analysis and apparatus thereof Download PDF

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Publication number
WO2009048239A3
WO2009048239A3 PCT/KR2008/005824 KR2008005824W WO2009048239A3 WO 2009048239 A3 WO2009048239 A3 WO 2009048239A3 KR 2008005824 W KR2008005824 W KR 2008005824W WO 2009048239 A3 WO2009048239 A3 WO 2009048239A3
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WO
WIPO (PCT)
Prior art keywords
encoding
band
sub
variable sub
variable
Prior art date
Application number
PCT/KR2008/005824
Other languages
French (fr)
Other versions
WO2009048239A2 (en
Inventor
Jeong-Il Seo
Seungkwon Beack
Inseon Jang
Kyeongok Kang
Jinwoo Hong
Jinwoong Kim
Chieteuk Ahn
Original Assignee
Korea Electronics Telecomm
Jeong-Il Seo
Seungkwon Beack
Inseon Jang
Kyeongok Kang
Jinwoo Hong
Jinwoong Kim
Chieteuk Ahn
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
Priority claimed from KR1020080095541A external-priority patent/KR20090037806A/en
Application filed by Korea Electronics Telecomm, Jeong-Il Seo, Seungkwon Beack, Inseon Jang, Kyeongok Kang, Jinwoo Hong, Jinwoong Kim, Chieteuk Ahn filed Critical Korea Electronics Telecomm
Publication of WO2009048239A2 publication Critical patent/WO2009048239A2/en
Publication of WO2009048239A3 publication Critical patent/WO2009048239A3/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
    • G10L19/008—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 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
    • G10L19/0204—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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Disclosed are encoding and decoding apparatuses and methods based on variable sub-band analysis. The encoding method based on variable sub-band analysis includes: generating down-mixed signals out of inputted multiple audio objects and encoding the down-mixed signals; transforming the multiple audio objects into a frequency domain to thereby produce frequency-domain signals; dividing a sub-band of the frequency-domain signals into variable sub-bands based on a characteristic of the sub-band and generating variable sub-band information including information on the variable sub- bands; generating parameter information used for recovering the down-mixed signals based on the variable sub-bands; and encoding the variable sub-band information and the parameter information.
PCT/KR2008/005824 2007-10-12 2008-10-02 Encoding and decoding method using variable subband analysis and apparatus thereof WO2009048239A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2007-0103184 2007-10-12
KR20070103184 2007-10-12
KR1020080095541A KR20090037806A (en) 2007-10-12 2008-09-29 Encoding and decoding method using variable subband aanlysis and apparatus thereof
KR10-2008-0095541 2008-09-29

Publications (2)

Publication Number Publication Date
WO2009048239A2 WO2009048239A2 (en) 2009-04-16
WO2009048239A3 true WO2009048239A3 (en) 2009-05-28

Family

ID=40549727

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/005824 WO2009048239A2 (en) 2007-10-12 2008-10-02 Encoding and decoding method using variable subband analysis and apparatus thereof

Country Status (1)

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WO (1) WO2009048239A2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120029926A1 (en) * 2010-07-30 2012-02-02 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for dependent-mode coding of audio signals
EP2693431B1 (en) * 2012-08-01 2022-01-26 Nintendo Co., Ltd. Data compression apparatus, data compression program, data compression method and data compression/decompression system
JP6021498B2 (en) 2012-08-01 2016-11-09 任天堂株式会社 Data compression apparatus, data compression program, data compression system, data compression method, data decompression apparatus, data compression / decompression system, and data structure of compressed data
EP2717263B1 (en) 2012-10-05 2016-11-02 Nokia Technologies Oy Method, apparatus, and computer program product for categorical spatial analysis-synthesis on the spectrum of a multichannel audio signal
EP2976768A4 (en) * 2013-03-20 2016-11-09 Nokia Technologies Oy Audio signal encoder comprising a multi-channel parameter selector
TWI579831B (en) 2013-09-12 2017-04-21 杜比國際公司 Method for quantization of parameters, method for dequantization of quantized parameters and computer-readable medium, audio encoder, audio decoder and audio system thereof
US9911423B2 (en) 2014-01-13 2018-03-06 Nokia Technologies Oy Multi-channel audio signal classifier
WO2015147619A1 (en) 2014-03-28 2015-10-01 삼성전자 주식회사 Method and apparatus for rendering acoustic signal, and computer-readable recording medium
CN105336335B (en) 2014-07-25 2020-12-08 杜比实验室特许公司 Audio object extraction with sub-band object probability estimation
CN113314132B (en) * 2021-05-17 2022-05-17 武汉大学 Audio object coding method, decoding method and device in interactive audio system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007089131A1 (en) * 2006-02-03 2007-08-09 Electronics And Telecommunications Research Institute Method and apparatus for control of randering multiobject or multichannel audio signal using spatial cue

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007089131A1 (en) * 2006-02-03 2007-08-09 Electronics And Telecommunications Research Institute Method and apparatus for control of randering multiobject or multichannel audio signal using spatial cue

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"19th International Congress on Acoustics, Madrid, 2-7 September 2007", article JEROEN BREEBAART ET AL.: "Spatial psychoacoustics as the basis for innovations in the field of audio coding and processing" *
CHRISTOF FALLER ET AL.: "Parametric coding of spatial audio", ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE THESE POUR L'OBTENTION DU GRADE DE DOCTEUR ES SCIENCES, no. 3062, 2004, pages 84 - 89 *

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Publication number Publication date
WO2009048239A2 (en) 2009-04-16

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