DE50204426D1 - APPARATUS AND METHOD FOR CODING A TIME DISCERNING AUDIO SIGNAL AND DEVICE AND METHOD FOR DECODING CODED AUDIO DATA - Google Patents

APPARATUS AND METHOD FOR CODING A TIME DISCERNING AUDIO SIGNAL AND DEVICE AND METHOD FOR DECODING CODED AUDIO DATA

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Publication number
DE50204426D1
DE50204426D1 DE50204426T DE50204426T DE50204426D1 DE 50204426 D1 DE50204426 D1 DE 50204426D1 DE 50204426 T DE50204426 T DE 50204426T DE 50204426 T DE50204426 T DE 50204426T DE 50204426 D1 DE50204426 D1 DE 50204426D1
Authority
DE
Germany
Prior art keywords
audio signal
quantization block
whole
loss
spectral values
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE50204426T
Other languages
German (de)
Inventor
Ralf Geiger
Thomas Sporer
Karlheinz Brandenburg
Juergen Herre
Juergen Koller
Joachim Deguara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Priority to DE50204426T priority Critical patent/DE50204426D1/en
Application granted granted Critical
Publication of DE50204426D1 publication Critical patent/DE50204426D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G10L19/02—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
    • 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
    • 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
    • G10L19/0017—Lossless audio signal coding; Perfect reconstruction of coded audio signal by transmission of coding error
    • 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
    • G10L19/032—Quantisation or dequantisation of spectral components

Abstract

According to the invention, a time-discrete audio signal is processed (52) in order to provide a quantization block with quantized spectral values (52). In addition, a whole-number spectral representation is generated from a time-discrete audio signal, using a whole-number transformation algorithm (56). The quantization block, which has been generated using a psychoacoustic model (54), is inverse quantized and rounded (58) to form a differential between the whole-number spectral values and the inverse quantized rounded spectral values. The quantization block alone produces a psychoacoustic encoded/decoded audio signal affected by loss after the decoding process, whereas the quantization block together with the combination block provides a loss-free, or practically loss-free encoded and decoded audio signal during said decoding process. The generation of the differential signal in the frequency range allows a simpler encoder/decoder structure to be produced.
DE50204426T 2002-04-18 2002-12-02 APPARATUS AND METHOD FOR CODING A TIME DISCERNING AUDIO SIGNAL AND DEVICE AND METHOD FOR DECODING CODED AUDIO DATA Expired - Lifetime DE50204426D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE50204426T DE50204426D1 (en) 2002-04-18 2002-12-02 APPARATUS AND METHOD FOR CODING A TIME DISCERNING AUDIO SIGNAL AND DEVICE AND METHOD FOR DECODING CODED AUDIO DATA

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10217297A DE10217297A1 (en) 2002-04-18 2002-04-18 Device and method for coding a discrete-time audio signal and device and method for decoding coded audio data
PCT/EP2002/013623 WO2003088212A1 (en) 2002-04-18 2002-12-02 Device and method for encoding a time-discrete audio signal and device and method for decoding coded audio data
DE50204426T DE50204426D1 (en) 2002-04-18 2002-12-02 APPARATUS AND METHOD FOR CODING A TIME DISCERNING AUDIO SIGNAL AND DEVICE AND METHOD FOR DECODING CODED AUDIO DATA

Publications (1)

Publication Number Publication Date
DE50204426D1 true DE50204426D1 (en) 2005-11-03

Family

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Family Applications (2)

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DE10217297A Withdrawn DE10217297A1 (en) 2002-04-18 2002-04-18 Device and method for coding a discrete-time audio signal and device and method for decoding coded audio data
DE50204426T Expired - Lifetime DE50204426D1 (en) 2002-04-18 2002-12-02 APPARATUS AND METHOD FOR CODING A TIME DISCERNING AUDIO SIGNAL AND DEVICE AND METHOD FOR DECODING CODED AUDIO DATA

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE10217297A Withdrawn DE10217297A1 (en) 2002-04-18 2002-04-18 Device and method for coding a discrete-time audio signal and device and method for decoding coded audio data

Country Status (9)

Country Link
EP (1) EP1495464B1 (en)
JP (1) JP4081447B2 (en)
KR (1) KR100892152B1 (en)
CN (1) CN1258172C (en)
AT (1) ATE305655T1 (en)
CA (1) CA2482427C (en)
DE (2) DE10217297A1 (en)
HK (1) HK1077391A1 (en)
WO (1) WO2003088212A1 (en)

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US8446947B2 (en) * 2003-10-10 2013-05-21 Agency For Science, Technology And Research Method for encoding a digital signal into a scalable bitstream; method for decoding a scalable bitstream
DE102004007184B3 (en) * 2004-02-13 2005-09-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method and apparatus for quantizing an information signal
DE102004007200B3 (en) * 2004-02-13 2005-08-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Device for audio encoding has device for using filter to obtain scaled, filtered audio value, device for quantizing it to obtain block of quantized, scaled, filtered audio values and device for including information in coded signal
DE102004059979B4 (en) 2004-12-13 2007-11-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Device and method for calculating a signal energy of an information signal
JP5227794B2 (en) 2005-06-30 2013-07-03 エルジー エレクトロニクス インコーポレイティド Apparatus and method for encoding and decoding audio signals
JP5231225B2 (en) 2005-08-30 2013-07-10 エルジー エレクトロニクス インコーポレイティド Apparatus and method for encoding and decoding audio signals
KR100857112B1 (en) 2005-10-05 2008-09-05 엘지전자 주식회사 Method and apparatus for signal processing and encoding and decoding method, and apparatus therefor
US7840401B2 (en) 2005-10-24 2010-11-23 Lg Electronics Inc. Removing time delays in signal paths
EP1852849A1 (en) * 2006-05-05 2007-11-07 Deutsche Thomson-Brandt Gmbh Method and apparatus for lossless encoding of a source signal, using a lossy encoded data stream and a lossless extension data stream
EP1883067A1 (en) * 2006-07-24 2008-01-30 Deutsche Thomson-Brandt Gmbh Method and apparatus for lossless encoding of a source signal, using a lossy encoded data stream and a lossless extension data stream
EP1903559A1 (en) 2006-09-20 2008-03-26 Deutsche Thomson-Brandt Gmbh Method and device for transcoding audio signals
DE102006051673A1 (en) * 2006-11-02 2008-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for reworking spectral values and encoders and decoders for audio signals
DE102007003187A1 (en) * 2007-01-22 2008-10-02 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for generating a signal or a signal to be transmitted
KR101149448B1 (en) 2007-02-12 2012-05-25 삼성전자주식회사 Audio encoding and decoding apparatus and method thereof
EP2015293A1 (en) * 2007-06-14 2009-01-14 Deutsche Thomson OHG Method and apparatus for encoding and decoding an audio signal using adaptively switched temporal resolution in the spectral domain
MX2010001763A (en) * 2007-08-27 2010-03-10 Ericsson Telefon Ab L M Low-complexity spectral analysis/synthesis using selectable time resolution.
EP2063417A1 (en) * 2007-11-23 2009-05-27 Deutsche Thomson OHG Rounding noise shaping for integer transform based encoding and decoding
EP2144230A1 (en) 2008-07-11 2010-01-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Low bitrate audio encoding/decoding scheme having cascaded switches
TWI520128B (en) * 2008-10-08 2016-02-01 弗勞恩霍夫爾協會 Multi-resolution switched audio encoding/decoding scheme
CN104392726B (en) * 2010-03-31 2018-01-02 韩国电子通信研究院 Encoding device and decoding device
US9236063B2 (en) * 2010-07-30 2016-01-12 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for dynamic bit allocation
US9208792B2 (en) 2010-08-17 2015-12-08 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for noise injection
JP5799707B2 (en) * 2011-09-26 2015-10-28 ソニー株式会社 Audio encoding apparatus, audio encoding method, audio decoding apparatus, audio decoding method, and program
EP2830058A1 (en) 2013-07-22 2015-01-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Frequency-domain audio coding supporting transform length switching
CN105632503B (en) * 2014-10-28 2019-09-03 南宁富桂精密工业有限公司 Information concealing method and system
US10339947B2 (en) 2017-03-22 2019-07-02 Immersion Networks, Inc. System and method for processing audio data
EP3471271A1 (en) * 2017-10-16 2019-04-17 Acoustical Beauty Improved convolutions of digital signals using a bit requirement optimization of a target digital signal
WO2019091576A1 (en) * 2017-11-10 2019-05-16 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio encoders, audio decoders, methods and computer programs adapting an encoding and decoding of least significant bits
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Also Published As

Publication number Publication date
WO2003088212A1 (en) 2003-10-23
JP4081447B2 (en) 2008-04-23
CA2482427C (en) 2010-01-19
CA2482427A1 (en) 2003-10-23
EP1495464A1 (en) 2005-01-12
CN1258172C (en) 2006-05-31
EP1495464B1 (en) 2005-09-28
ATE305655T1 (en) 2005-10-15
CN1625768A (en) 2005-06-08
KR100892152B1 (en) 2009-04-10
AU2002358578A1 (en) 2003-10-27
KR20050007312A (en) 2005-01-17
HK1077391A1 (en) 2006-02-10
DE10217297A1 (en) 2003-11-06
JP2005527851A (en) 2005-09-15

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