AU2585600A - 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

Info

Publication number
AU2585600A
AU2585600A AU25856/00A AU2585600A AU2585600A AU 2585600 A AU2585600 A AU 2585600A AU 25856/00 A AU25856/00 A AU 25856/00A AU 2585600 A AU2585600 A AU 2585600A AU 2585600 A AU2585600 A AU 2585600A
Authority
AU
Australia
Prior art keywords
time
frequency
spectral envelope
envelope coding
efficient spectral
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.)
Abandoned
Application number
AU25856/00A
Other languages
English (en)
Inventor
Per Ekstrand
Fredrik Henn
Kristofer Kjorling
Lars Gustaf Liljeryd
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/xx
Application filed by Individual filed Critical Individual
Publication of AU2585600A publication Critical patent/AU2585600A/en
Abandoned legal-status Critical Current

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
    • G10L19/04—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

Landscapes

  • 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)
AU25856/00A 1999-01-27 2000-01-26 Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching Abandoned AU2585600A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
SE9900256A SE9900256D0 (sv) 1999-01-27 1999-01-27 Metod och anordning för förbättring av effektivitet och ljudkvalitet hos ljudkodare
SE9900256 1999-01-27
SE9903552 1999-10-01
SE9903552A SE9903552D0 (sv) 1999-01-27 1999-10-01 Efficient spectral envelope coding using dynamic scalefactor grouping and time/frequency switching
PCT/SE2000/000158 WO2000045378A2 (fr) 1999-01-27 2000-01-26 Codage efficient de l'enveloppe spectrale mettant en oeuvre une resolution temps frequence et une commutation temps frequence

Publications (1)

Publication Number Publication Date
AU2585600A true AU2585600A (en) 2000-08-18

Family

ID=26663488

Family Applications (1)

Application Number Title Priority Date Filing Date
AU25856/00A Abandoned AU2585600A (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 (fr)
SE (1) SE9903552D0 (fr)
WO (1) WO2000045378A2 (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7610205B2 (en) 2002-02-12 2009-10-27 Dolby Laboratories Licensing Corporation High quality time-scaling and pitch-scaling of audio signals
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
US7283954B2 (en) 2001-04-13 2007-10-16 Dolby Laboratories Licensing Corporation Comparing audio using characterizations based on auditory events
MXPA03010237A (es) * 2001-05-10 2004-03-16 Dolby Lab Licensing Corp Mejoramiento del funcionamiento de transitorios en sistemas de codificacion de audio de baja tasa de transferencia de bitios mediante la reduccion del pre-ruido.
US8605911B2 (en) 2001-07-10 2013-12-10 Dolby International Ab Efficient and scalable parametric stereo coding for low bitrate audio coding applications
SE0202159D0 (sv) * 2001-07-10 2002-07-09 Coding Technologies Sweden Ab Efficientand scalable parametric stereo coding for low bitrate applications
EP1423847B1 (fr) 2001-11-29 2005-02-02 Coding Technologies AB Reconstruction des hautes frequences
KR100949232B1 (ko) 2002-01-30 2010-03-24 파나소닉 주식회사 인코딩 장치, 디코딩 장치 및 그 방법
SE0202770D0 (sv) 2002-09-18 2002-09-18 Coding Technologies Sweden Ab Method for reduction of aliasing introduces by spectral envelope adjustment in real-valued filterbanks
WO2005086139A1 (fr) 2004-03-01 2005-09-15 Dolby Laboratories Licensing Corporation Codage audio multicanaux
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
WO2006132857A2 (fr) 2005-06-03 2006-12-14 Dolby Laboratories Licensing Corporation Appareil et procede permettant de coder des signaux audio a l'aide d'instructions de decodage
US8417532B2 (en) 2006-10-18 2013-04-09 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Encoding 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
US8788276B2 (en) * 2008-07-11 2014-07-22 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for calculating bandwidth extension data using a spectral tilt controlled framing
PL2951815T3 (pl) 2013-01-29 2018-06-29 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Kodery audio, dekodery audio, systemy, sposoby i programy komputerowe wykorzystujące zwiększoną rozdzielczość czasową w otoczeniu czasowym początków lub końców spółgłosek szczelinowych lub spółgłosek zwarto-szczelinowych
TWI557726B (zh) * 2013-08-29 2016-11-11 杜比國際公司 用於決定音頻信號的高頻帶信號的主比例因子頻帶表之系統和方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3144009B2 (ja) * 1991-12-24 2001-03-07 日本電気株式会社 音声符号復号化装置
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
JP3277692B2 (ja) * 1994-06-13 2002-04-22 ソニー株式会社 情報符号化方法、情報復号化方法及び情報記録媒体
US5852806A (en) * 1996-03-19 1998-12-22 Lucent Technologies Inc. Switched filterbank for use in audio signal coding
SE512719C2 (sv) * 1997-06-10 2000-05-02 Lars Gustaf Liljeryd En metod och anordning för reduktion av dataflöde baserad på harmonisk bandbreddsexpansion

Also Published As

Publication number Publication date
WO2000045378A2 (fr) 2000-08-03
SE9903552D0 (sv) 1999-10-01
WO2000045378A3 (fr) 2000-11-16

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase