ATE387044T1 - METHOD AND APPARATUS FOR PERCEPTUAL TONE CODING OF A MULTI-CHANNEL TONE SIGNAL USING CASCADED DISCRETE COSINE TRANSFORMATION OR MODIFIED DISCRETE COSINE TRANSFORMATION - Google Patents

METHOD AND APPARATUS FOR PERCEPTUAL TONE CODING OF A MULTI-CHANNEL TONE SIGNAL USING CASCADED DISCRETE COSINE TRANSFORMATION OR MODIFIED DISCRETE COSINE TRANSFORMATION

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Publication number
ATE387044T1
ATE387044T1 AT01305191T AT01305191T ATE387044T1 AT E387044 T1 ATE387044 T1 AT E387044T1 AT 01305191 T AT01305191 T AT 01305191T AT 01305191 T AT01305191 T AT 01305191T AT E387044 T1 ATE387044 T1 AT E387044T1
Authority
AT
Austria
Prior art keywords
discrete cosine
cosine transformation
channel
coding
coding efficiency
Prior art date
Application number
AT01305191T
Other languages
German (de)
Inventor
Ye Wang
Original Assignee
Nokia Siemens Networks Oy
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 Nokia Siemens Networks Oy filed Critical Nokia Siemens Networks Oy
Application granted granted Critical
Publication of ATE387044T1 publication Critical patent/ATE387044T1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/88—Stereophonic broadcast systems
    • 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
    • G10L19/0212—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 orthogonal transformation

Abstract

A method and apparatus for coding audio signals having M sound channels in order to reduce the amount of audio data for transmission or storage. A comparison device is used to compare the coding efficiency in intra-channel signal redundancy reduction and the coding efficiency in inter-channel signal redundancy reduction in order to select a more efficient coding process. In particular, the modified discrete cosine transform (MDCT) process is used to compute the intra-channel coding efficiency and the cascade discrete cosine transform of the MDCT coefficients is used to compute the inter-channel coding efficiency. The efficiencies can be evaluated by computing a gain or the cross-channel correlation coefficients in the audio signals of the M sound channels. <IMAGE>
AT01305191T 2000-07-07 2001-06-14 METHOD AND APPARATUS FOR PERCEPTUAL TONE CODING OF A MULTI-CHANNEL TONE SIGNAL USING CASCADED DISCRETE COSINE TRANSFORMATION OR MODIFIED DISCRETE COSINE TRANSFORMATION ATE387044T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US61220700A 2000-07-07 2000-07-07

Publications (1)

Publication Number Publication Date
ATE387044T1 true ATE387044T1 (en) 2008-03-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
AT01305191T ATE387044T1 (en) 2000-07-07 2001-06-14 METHOD AND APPARATUS FOR PERCEPTUAL TONE CODING OF A MULTI-CHANNEL TONE SIGNAL USING CASCADED DISCRETE COSINE TRANSFORMATION OR MODIFIED DISCRETE COSINE TRANSFORMATION

Country Status (3)

Country Link
EP (1) EP1175030B1 (en)
AT (1) ATE387044T1 (en)
DE (1) DE60132853D1 (en)

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US6934677B2 (en) 2001-12-14 2005-08-23 Microsoft Corporation Quantization matrices based on critical band pattern information for digital audio wherein quantization bands differ from critical bands
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US7299190B2 (en) 2002-09-04 2007-11-20 Microsoft Corporation Quantization and inverse quantization for audio
US7502743B2 (en) 2002-09-04 2009-03-10 Microsoft Corporation Multi-channel audio encoding and decoding with multi-channel transform selection
JP4676140B2 (en) 2002-09-04 2011-04-27 マイクロソフト コーポレーション Audio quantization and inverse quantization
US7460990B2 (en) 2004-01-23 2008-12-02 Microsoft Corporation Efficient coding of digital media spectral data using wide-sense perceptual similarity
US7831434B2 (en) 2006-01-20 2010-11-09 Microsoft Corporation Complex-transform channel coding with extended-band frequency coding
US8190425B2 (en) 2006-01-20 2012-05-29 Microsoft Corporation Complex cross-correlation parameters for multi-channel audio
US7953604B2 (en) 2006-01-20 2011-05-31 Microsoft Corporation Shape and scale parameters for extended-band frequency coding
US8046214B2 (en) * 2007-06-22 2011-10-25 Microsoft Corporation Low complexity decoder for complex transform coding of multi-channel sound
US7885819B2 (en) 2007-06-29 2011-02-08 Microsoft Corporation Bitstream syntax for multi-process audio decoding
US8249883B2 (en) 2007-10-26 2012-08-21 Microsoft Corporation Channel extension coding for multi-channel source
US8631060B2 (en) 2007-12-13 2014-01-14 Qualcomm Incorporated Fast algorithms for computation of 5-point DCT-II, DCT-IV, and DST-IV, and architectures
US20120215788A1 (en) * 2009-11-18 2012-08-23 Nokia Corporation Data Processing
KR101666465B1 (en) 2010-07-22 2016-10-17 삼성전자주식회사 Apparatus method for encoding/decoding multi-channel audio signal
EA030776B9 (en) 2011-03-28 2019-01-31 Долби Лабораторис Лайсэнзин Корпорейшн Reduced complexity transform for a low-frequency-effects channel
CN115410584A (en) * 2021-05-28 2022-11-29 华为技术有限公司 Method and apparatus for encoding multi-channel audio signal

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DE4331376C1 (en) * 1993-09-15 1994-11-10 Fraunhofer Ges Forschung Method for determining the type of encoding to selected for the encoding of at least two signals
US5488665A (en) * 1993-11-23 1996-01-30 At&T Corp. Multi-channel perceptual audio compression system with encoding mode switching among matrixed channels
JP3404837B2 (en) * 1993-12-07 2003-05-12 ソニー株式会社 Multi-layer coding device
KR970005131B1 (en) * 1994-01-18 1997-04-12 대우전자 주식회사 Digital audio encoding apparatus adaptive to the human audatory characteristic
EP0688113A2 (en) * 1994-06-13 1995-12-20 Sony Corporation Method and apparatus for encoding and decoding digital audio signals and apparatus for recording digital audio
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Also Published As

Publication number Publication date
EP1175030B1 (en) 2008-02-20
EP1175030A2 (en) 2002-01-23
DE60132853D1 (en) 2008-04-03
EP1175030A3 (en) 2002-10-23

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