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WO2000045378A3 - Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching - Google Patents

Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching Download PDF

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Publication number
WO2000045378A3
WO2000045378A3 PCT/SE2000/000158 SE0000158W WO0045378A3 WO 2000045378 A3 WO2000045378 A3 WO 2000045378A3 SE 0000158 W SE0000158 W SE 0000158W WO 0045378 A3 WO0045378 A3 WO 0045378A3
Authority
WO
WIPO (PCT)
Prior art keywords
time
frequency
spectral envelope
coding
envelope coding
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.)
Ceased
Application number
PCT/SE2000/000158
Other languages
French (fr)
Other versions
WO2000045378A2 (en
Inventor
Lars Gustaf Liljeryd
Kristofer Kjoerling
Per Ekstrand
Fredrik Henn
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.)
Individual
Original Assignee
Individual
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 SE9900256A external-priority patent/SE9900256D0/en
Application filed by Individual filed Critical Individual
Priority to US09/763,128 priority Critical patent/US6978236B1/en
Priority to AU25856/00A priority patent/AU2585600A/en
Publication of WO2000045378A2 publication Critical patent/WO2000045378A2/en
Priority to PCT/SE2000/001887 priority patent/WO2001026095A1/en
Priority to RU2002111665/09A priority patent/RU2236046C2/en
Priority to HK03101398.3A priority patent/HK1049401B/en
Priority to ES00968271T priority patent/ES2223591T3/en
Priority to AU78212/00A priority patent/AU7821200A/en
Priority to DE60012198T priority patent/DE60012198T2/en
Priority to DK00968271T priority patent/DK1216474T3/en
Priority to PT00968271T priority patent/PT1216474E/en
Priority to BRPI0014642A priority patent/BRPI0014642B1/en
Priority to AT00968271T priority patent/ATE271250T1/en
Priority to CNB008136025A priority patent/CN1172293C/en
Priority to EP00968271A priority patent/EP1216474B1/en
Priority to JP2001528974A priority patent/JP4035631B2/en
Publication of WO2000045378A3 publication Critical patent/WO2000045378A3/en
Anticipated expiration legal-status Critical
Priority to JP2005292388A priority patent/JP4334526B2/en
Priority to JP2005292384A priority patent/JP4628921B2/en
Priority to US11/246,284 priority patent/US7191121B2/en
Priority to US11/246,283 priority patent/US7181389B2/en
Ceased legal-status Critical Current

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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
    • G10L19/04—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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/18—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular 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

The present invention provides a new method and an apparatus for spectral envelope encoding. The invention teaches how to perform and signal compactly a time/frequency mapping of the envelope representation, and further, encode the spectral envelope data efficiently using adaptive time/frequency directional coding. The method is applicable to both natural audio coding and speech coding systems and is especially suited for coders using SBR [WO 98/57436] and other high frequency reconstruction methods.
PCT/SE2000/000158 1999-01-27 2000-01-26 Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching Ceased WO2000045378A2 (en)

Priority Applications (19)

Application Number Priority Date Filing Date Title
US09/763,128 US6978236B1 (en) 1999-10-01 2000-01-26 Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching
AU25856/00A AU2585600A (en) 1999-01-27 2000-01-26 Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching
EP00968271A EP1216474B1 (en) 1999-10-01 2000-09-29 Efficient spectral envelope coding using variable time/frequency resolution
JP2001528974A JP4035631B2 (en) 1999-10-01 2000-09-29 Efficient spectral envelope coding using variable time / frequency resolution and time / frequency switching
PT00968271T PT1216474E (en) 1999-10-01 2000-09-29 EFFICIENT CODE OF SPECIAL ENVELOPE USING RESOLUTION TIME / VARIABLE FREQUENCY
AT00968271T ATE271250T1 (en) 1999-10-01 2000-09-29 CODING THE ENVELOPE OF THE SPECTRUM USING VARIABLE TIME/FREQUENCY RESOLUTION
HK03101398.3A HK1049401B (en) 1999-10-01 2000-09-29 Effective spectral envelope coding method and coding/encoding apparatus thereof
ES00968271T ES2223591T3 (en) 1999-10-01 2000-09-29 EFFECTIVE CODIFICATION OF SPECIAL ENVELOPE USING A RESOLUTION TIME / VARIABLE FREQUENCY.
AU78212/00A AU7821200A (en) 1999-10-01 2000-09-29 Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching
DE60012198T DE60012198T2 (en) 1999-10-01 2000-09-29 ENCODING THE CORD OF THE SPECTRUM BY VARIABLE TIME / FREQUENCY RESOLUTION
DK00968271T DK1216474T3 (en) 1999-10-01 2000-09-29 Effective spectral envelope curve coding using variable time / frequency resolution
PCT/SE2000/001887 WO2001026095A1 (en) 1999-10-01 2000-09-29 Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching
BRPI0014642A BRPI0014642B1 (en) 1999-10-01 2000-09-29 spectral envelope coding using variable time-frequency resolution and time-frequency shifting
RU2002111665/09A RU2236046C2 (en) 1999-10-01 2000-09-29 Effective encoding of spectrum envelope with use of variable resolution in time and frequency and switching time/frequency
CNB008136025A CN1172293C (en) 1999-10-01 2000-09-29 Efficient spectral envelope encoding method and encoding and decoding apparatus therefor
JP2005292384A JP4628921B2 (en) 1999-10-01 2005-10-05 Efficient spectral envelope coding using variable time / frequency resolution and time / frequency switching
JP2005292388A JP4334526B2 (en) 1999-10-01 2005-10-05 Efficient spectral envelope coding using variable time / frequency resolution and time / frequency switching
US11/246,284 US7191121B2 (en) 1999-10-01 2005-10-11 Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching
US11/246,283 US7181389B2 (en) 1999-10-01 2005-10-11 Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE9900256A SE9900256D0 (en) 1999-01-27 1999-01-27 Method and apparatus for improving the efficiency and sound quality of audio encoders
SE9900256-0 1999-01-27
SE9903552-9 1999-10-01
SE9903552A SE9903552D0 (en) 1999-01-27 1999-10-01 Efficient spectral envelope coding using dynamic scalefactor grouping and time / frequency switching

Related Child Applications (3)

Application Number Title Priority Date Filing Date
US09763128 A-371-Of-International 2000-01-26
US11/246,283 Division US7181389B2 (en) 1999-10-01 2005-10-11 Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching
US11/246,284 Division US7191121B2 (en) 1999-10-01 2005-10-11 Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching

Publications (2)

Publication Number Publication Date
WO2000045378A2 WO2000045378A2 (en) 2000-08-03
WO2000045378A3 true WO2000045378A3 (en) 2000-11-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2000/000158 Ceased WO2000045378A2 (en) 1999-01-27 2000-01-26 Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching

Country Status (3)

Country Link
AU (1) AU2585600A (en)
SE (1) SE9903552D0 (en)
WO (1) WO2000045378A2 (en)

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US9311922B2 (en) 2004-03-01 2016-04-12 Dolby Laboratories Licensing Corporation Method, apparatus, and storage medium for decoding encoded audio channels

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US7610205B2 (en) 2002-02-12 2009-10-27 Dolby Laboratories Licensing Corporation High quality time-scaling and pitch-scaling of audio signals
US7283954B2 (en) 2001-04-13 2007-10-16 Dolby Laboratories Licensing Corporation Comparing audio using characterizations based on auditory events
US7461002B2 (en) 2001-04-13 2008-12-02 Dolby Laboratories Licensing Corporation Method for time aligning audio signals using characterizations based on auditory events
US7711123B2 (en) 2001-04-13 2010-05-04 Dolby Laboratories Licensing Corporation Segmenting audio signals into auditory events
ATE387000T1 (en) * 2001-05-10 2008-03-15 Dolby Lab Licensing Corp IMPROVE TRANSIENT PERFORMANCE IN LOW BITRATE ENCODERS BY SUPPRESSING PRE-NOISE
SE0202159D0 (en) 2001-07-10 2002-07-09 Coding Technologies Sweden Ab Efficientand scalable parametric stereo coding for low bitrate applications
US8605911B2 (en) 2001-07-10 2013-12-10 Dolby International Ab Efficient and scalable parametric stereo coding for low bitrate audio coding applications
KR100648760B1 (en) 2001-11-29 2006-11-23 코딩 테크놀러지스 에이비 Method for improving high frequency reproduction technology and computer program recording medium storing program for performing same
CN1288625C (en) 2002-01-30 2006-12-06 松下电器产业株式会社 Audio coding and decoding equipment and method thereof
SE0202770D0 (en) 2002-09-18 2002-09-18 Coding Technologies Sweden Ab Method of reduction of aliasing is introduced by spectral envelope adjustment in real-valued filterbanks
US7508947B2 (en) 2004-08-03 2009-03-24 Dolby Laboratories Licensing Corporation Method for combining audio signals using auditory scene analysis
US7991610B2 (en) 2005-04-13 2011-08-02 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Adaptive grouping of parameters for enhanced coding efficiency
AU2006255662B2 (en) 2005-06-03 2012-08-23 Dolby Laboratories Licensing Corporation Apparatus and method for encoding audio signals with decoding instructions
US8417532B2 (en) 2006-10-18 2013-04-09 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Encoding an information signal
DE102006049154B4 (en) * 2006-10-18 2009-07-09 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Coding of an information signal
US8126721B2 (en) 2006-10-18 2012-02-28 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Encoding an information signal
US8041578B2 (en) 2006-10-18 2011-10-18 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Encoding an information signal
ES2372014T3 (en) * 2008-07-11 2012-01-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. APPARATUS AND METHOD FOR CALCULATING BANDWIDTH EXTENSION DATA USING A FRAME CONTROLLED BY SPECTRAL SLOPE.
EP3279894B1 (en) * 2013-01-29 2020-04-01 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio encoders, audio decoders, systems, methods and computer programs using an increased temporal resolution in temporal proximity of onsets or offsets of fricatives or affricates
TWI557726B (en) * 2013-08-29 2016-11-11 杜比國際公司 System and method for determining a master scale factor band table for a highband signal of an audio signal

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US5504832A (en) * 1991-12-24 1996-04-02 Nec Corporation Reduction of phase information in coding of speech
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WO1998057436A2 (en) * 1997-06-10 1998-12-17 Lars Gustaf Liljeryd Source coding enhancement using spectral-band replication
US5852806A (en) * 1996-03-19 1998-12-22 Lucent Technologies Inc. Switched filterbank for use in audio signal coding

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US5504832A (en) * 1991-12-24 1996-04-02 Nec Corporation Reduction of phase information in coding of speech
US5581653A (en) * 1993-08-31 1996-12-03 Dolby Laboratories Licensing Corporation Low bit-rate high-resolution spectral envelope coding for audio encoder and decoder
US5737718A (en) * 1994-06-13 1998-04-07 Sony Corporation Method, apparatus and recording medium for a coder with a spectral-shape-adaptive subband configuration
US5852806A (en) * 1996-03-19 1998-12-22 Lucent Technologies Inc. Switched filterbank for use in audio signal coding
WO1998057436A2 (en) * 1997-06-10 1998-12-17 Lars Gustaf Liljeryd Source coding enhancement using spectral-band replication

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Title
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PRINCEN J. ET AL.: "Audio coding with signal adaptive filterbanks", INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING, ICASSP-95, vol. 5, 1995, pages 3071 - 3074 *

Cited By (3)

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Publication number Priority date Publication date Assignee Title
US9311922B2 (en) 2004-03-01 2016-04-12 Dolby Laboratories Licensing Corporation Method, apparatus, and storage medium for decoding encoded audio channels
US9454969B2 (en) 2004-03-01 2016-09-27 Dolby Laboratories Licensing Corporation Multichannel audio coding
US9520135B2 (en) 2004-03-01 2016-12-13 Dolby Laboratories Licensing Corporation Reconstructing audio signals with multiple decorrelation techniques

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Publication number Publication date
SE9903552D0 (en) 1999-10-01
AU2585600A (en) 2000-08-18
WO2000045378A2 (en) 2000-08-03

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