WO2000045378A3 - Codage efficient de l'enveloppe spectrale mettant en oeuvre une resolution temps frequence et une commutation temps frequence - Google Patents

Codage efficient de l'enveloppe spectrale mettant en oeuvre une resolution temps frequence et une commutation temps frequence 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
Application number
PCT/SE2000/000158
Other languages
English (en)
Other versions
WO2000045378A2 (fr
Inventor
Lars Gustaf Liljeryd
Kristofer Kjoerling
Per Ekstrand
Fredrik Henn
Original Assignee
Lars Gustaf Liljeryd
Kristofer Kjoerling
Per Ekstrand
Fredrik Henn
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 Lars Gustaf Liljeryd, Kristofer Kjoerling, Per Ekstrand, Fredrik Henn filed Critical Lars Gustaf Liljeryd
Priority to AU25856/00A priority Critical patent/AU2585600A/en
Priority to US09/763,128 priority patent/US6978236B1/en
Publication of WO2000045378A2 publication Critical patent/WO2000045378A2/fr
Priority to JP2001528974A priority patent/JP4035631B2/ja
Priority to RU2002111665/09A priority patent/RU2236046C2/ru
Priority to PCT/SE2000/001887 priority patent/WO2001026095A1/fr
Priority to PT00968271T priority patent/PT1216474E/pt
Priority to DE60012198T priority patent/DE60012198T2/de
Priority to ES00968271T priority patent/ES2223591T3/es
Priority to AU78212/00A priority patent/AU7821200A/en
Priority to DK00968271T priority patent/DK1216474T3/da
Priority to CNB008136025A priority patent/CN1172293C/zh
Priority to EP00968271A priority patent/EP1216474B1/fr
Priority to BRPI0014642A priority patent/BRPI0014642B1/pt
Priority to AT00968271T priority patent/ATE271250T1/de
Publication of WO2000045378A3 publication Critical patent/WO2000045378A3/fr
Priority to HK03101398.3A priority patent/HK1049401B/zh
Priority to JP2005292384A priority patent/JP4628921B2/ja
Priority to JP2005292388A priority patent/JP4334526B2/ja
Priority to US11/246,284 priority patent/US7191121B2/en
Priority to US11/246,283 priority patent/US7181389B2/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
    • G10L19/04—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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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

Abstract

La présente invention concerne un nouveau procédé et un appareil de codage de l'enveloppe spectrale. L'invention se rapporte à une manière d'effectuer et d'indiquer de façon compacte un mappage temps fréquence de la représentation de l'enveloppe, ainsi qu'à une manière de coder efficacement les données de l'enveloppe spectrale au moyen d'un codage directionnel temps fréquence adaptatif. Ce procédé est applicable tant pour le système de codage audio naturel que pour le système de codage de la parole, et convient particulièrement pour des codeurs mettant en oeuvre une méthode SBR [WO 98/57436] ou une autre méthode de reconstruction haute fréquence.
PCT/SE2000/000158 1999-01-27 2000-01-26 Codage efficient de l'enveloppe spectrale mettant en oeuvre une resolution temps frequence et une commutation temps frequence WO2000045378A2 (fr)

Priority Applications (19)

Application Number Priority Date Filing Date Title
AU25856/00A AU2585600A (en) 1999-01-27 2000-01-26 Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching
US09/763,128 US6978236B1 (en) 1999-10-01 2000-01-26 Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching
BRPI0014642A BRPI0014642B1 (pt) 1999-10-01 2000-09-29 codificação de envelope espectral usando resolução de tempo-frequência variável e mudança de tempo-frequência
AT00968271T ATE271250T1 (de) 1999-10-01 2000-09-29 Kodierung der hüllkurve des spektrums mittels variabler zeit/frequenz-auflösung
ES00968271T ES2223591T3 (es) 1999-10-01 2000-09-29 Codificacion eficaz de envolvente especial utilizando una resolucion tiempo/frecuencia variable.
EP00968271A EP1216474B1 (fr) 1999-10-01 2000-09-29 Codage efficace de l'enveloppe spectrale par resolution temps/frequence variable
PCT/SE2000/001887 WO2001026095A1 (fr) 1999-10-01 2000-09-29 Codage efficace de l'enveloppe spectrale par resolution temps/frequence et commutation temps/frequence variables
PT00968271T PT1216474E (pt) 1999-10-01 2000-09-29 Codificacao eficiente de envolvente especial utilizando resolucao tempo/frequencia variavel
DE60012198T DE60012198T2 (de) 1999-10-01 2000-09-29 Kodierung der hüllkurve des spektrums mittels variabler zeit/frequenz-auflösung
JP2001528974A JP4035631B2 (ja) 1999-10-01 2000-09-29 可変時間／周波数分解能および時間／周波数切り替えを使用する効率的なスペクトルエンベロープ符号化
AU78212/00A AU7821200A (en) 1999-10-01 2000-09-29 Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching
DK00968271T DK1216474T3 (da) 1999-10-01 2000-09-29 Effektiv spektral indhyllingskurvekodning ved anvendelse af variabel tids/frekvensoplösning
CNB008136025A CN1172293C (zh) 1999-10-01 2000-09-29 有效频谱包络编码方法及其编解码设备
RU2002111665/09A RU2236046C2 (ru) 1999-10-01 2000-09-29 Эффективное кодирование огибающей спектра с использованием переменного разрешения по времени и по частоте и переключения время/частота
HK03101398.3A HK1049401B (zh) 1999-10-01 2003-02-24 有效頻譜包絡編碼方法及其編解碼設備
JP2005292388A JP4334526B2 (ja) 1999-10-01 2005-10-05 可変時間／周波数分解能および時間／周波数切り替えを使用する効率的なスペクトルエンベロープ符号化
JP2005292384A JP4628921B2 (ja) 1999-10-01 2005-10-05 可変時間／周波数分解能および時間／周波数切り替えを使用する効率的なスペクトルエンベロープ符号化
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
SE9900256-0 1999-01-27
SE9900256A SE9900256D0 (sv) 1999-01-27 1999-01-27 Metod och anordning för förbättring av effektivitet och ljudkvalitet hos ljudkodare
SE9903552A SE9903552D0 (sv) 1999-01-27 1999-10-01 Efficient spectral envelope coding using dynamic scalefactor grouping and time/frequency switching
SE9903552-9 1999-10-01

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 (fr) 2000-08-03
WO2000045378A3 true WO2000045378A3 (fr) 2000-11-16

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Application Number Title Priority Date Filing Date
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

Country Status (3)

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

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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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US7711123B2 (en) 2001-04-13 2010-05-04 Dolby Laboratories Licensing Corporation Segmenting audio signals into 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
US7283954B2 (en) 2001-04-13 2007-10-16 Dolby Laboratories Licensing Corporation Comparing audio using characterizations based on auditory events
US7610205B2 (en) 2002-02-12 2009-10-27 Dolby Laboratories Licensing Corporation High quality time-scaling and pitch-scaling of audio signals
AU2002307533B2 (en) * 2001-05-10 2008-01-31 Dolby Laboratories Licensing Corporation Improving transient performance of low bit rate audio coding systems by reducing pre-noise
SE0202159D0 (sv) * 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
CN1279512C (zh) 2001-11-29 2006-10-11 编码技术股份公司 用于改善高频重建的方法和装置
CN1288625C (zh) 2002-01-30 2006-12-06 松下电器产业株式会社 音频编码与解码设备及其方法
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
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
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
US8417532B2 (en) 2006-10-18 2013-04-09 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Encoding an information signal
RU2443028C2 (ru) * 2008-07-11 2012-02-20 Фраунхофер-Гезелльшафт цур Фёрдерунг дер ангевандтен Устройство и способ расчета параметров расширения полосы пропускания посредством управления фреймами наклона спектра
WO2014118179A1 (fr) * 2013-01-29 2014-08-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Codeurs audio, décodeurs audio, systèmes, procédés et programmes d'ordinateur utilisant une résolution temporelle accrue à proximité temporelle de débuts ou de fins de fricatives ou d'affriquées
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

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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
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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WO2000045378A2 (fr) 2000-08-03
SE9903552D0 (sv) 1999-10-01
AU2585600A (en) 2000-08-18

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