MX2013015372A - Ventanas de ponderacion en la codificacion/decodificacion con la transformada de solapamiento optimizada por retraso. - Google Patents

Ventanas de ponderacion en la codificacion/decodificacion con la transformada de solapamiento optimizada por retraso.

Info

Publication number
MX2013015372A
MX2013015372A MX2013015372A MX2013015372A MX2013015372A MX 2013015372 A MX2013015372 A MX 2013015372A MX 2013015372 A MX2013015372 A MX 2013015372A MX 2013015372 A MX2013015372 A MX 2013015372A MX 2013015372 A MX2013015372 A MX 2013015372A
Authority
MX
Mexico
Prior art keywords
coding
over
interval
delay
samples
Prior art date
Application number
MX2013015372A
Other languages
English (en)
Inventor
Julien Faure
Pierrick Philippe
Original Assignee
Orange
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 Orange filed Critical Orange
Publication of MX2013015372A publication Critical patent/MX2013015372A/es

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
    • G10L19/02—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 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
    • G10L19/02—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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/02—Conversion to or from weighted codes, i.e. the weight given to a digit depending on the position of the digit within the block or code word
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/46—Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind
    • 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
    • G10L19/008—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 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
    • G10L19/02—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
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/2639—Modulators using other transforms, e.g. discrete cosine transforms, Orthogonal Time Frequency and Space [OTFS] or hermetic transforms

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

La invención se relaciona con la codificación/decodificación de una señal digital, que consiste en bloques sucesivos de muestras, la codificación está compuesta por la transformada con el tipo de solapamiento y que comprende, después del análisis, la aplicación de una ventana de ponderación a dos bloques de muestras sucesivas M. En particular, esta ventana de ponderación es asimétrica y comprende cuatro porciones distintas que se extienden sucesivamente sobre los dos bloques anteriormente mencionados, con: una primera porción (wl), que aumenta a través de un primer intervalo de muestras, una segunda porción (w2), constante a un valor de 1 a través de un segundo intervalo, una tercera porción (W3), que disminuye a través de un tercer intervalo, y una cuarta porción (w4), constante a un valor de 0 a través de un cuarto intervalo.
MX2013015372A 2011-06-28 2012-06-26 Ventanas de ponderacion en la codificacion/decodificacion con la transformada de solapamiento optimizada por retraso. MX2013015372A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1155769A FR2977439A1 (fr) 2011-06-28 2011-06-28 Fenetres de ponderation en codage/decodage par transformee avec recouvrement, optimisees en retard.
PCT/FR2012/051463 WO2013001226A1 (fr) 2011-06-28 2012-06-26 Fenêtres de pondération en codage/décodage par transformée avec recouvrement, optimisées en retard

Publications (1)

Publication Number Publication Date
MX2013015372A true MX2013015372A (es) 2014-08-01

Family

ID=46508112

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2013015372A MX2013015372A (es) 2011-06-28 2012-06-26 Ventanas de ponderacion en la codificacion/decodificacion con la transformada de solapamiento optimizada por retraso.

Country Status (12)

Country Link
US (1) US8847795B2 (es)
EP (1) EP2727107B1 (es)
JP (1) JP6109162B2 (es)
KR (1) KR101966782B1 (es)
CN (1) CN103930946B (es)
BR (1) BR112013033727B1 (es)
CA (1) CA2839971C (es)
ES (1) ES2735279T3 (es)
FR (1) FR2977439A1 (es)
MX (1) MX2013015372A (es)
RU (1) RU2604994C2 (es)
WO (1) WO2013001226A1 (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3024581A1 (fr) * 2014-07-29 2016-02-05 Orange Determination d'un budget de codage d'une trame de transition lpd/fd
EP3483882A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Controlling bandwidth in encoders and/or decoders
EP3483883A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio coding and decoding with selective postfiltering
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
EP3483884A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Signal filtering
WO2019091573A1 (en) 2017-11-10 2019-05-16 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for encoding and decoding an audio signal using downsampling or interpolation of scale parameters
EP3483880A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Temporal noise shaping
EP3483878A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio decoder supporting a set of different loss concealment tools
EP3483879A1 (en) * 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Analysis/synthesis windowing function for modulated lapped transformation
EP3483886A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Selecting pitch lag
CN117476017A (zh) * 2022-07-27 2024-01-30 华为技术有限公司 音频编解码方法、装置、存储介质及计算机程序产品

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5434947A (en) * 1993-02-23 1995-07-18 Motorola Method for generating a spectral noise weighting filter for use in a speech coder
JP3277682B2 (ja) * 1994-04-22 2002-04-22 ソニー株式会社 情報符号化方法及び装置、情報復号化方法及び装置、並びに情報記録媒体及び情報伝送方法
US5701389A (en) * 1995-01-31 1997-12-23 Lucent Technologies, Inc. Window switching based on interblock and intrablock frequency band energy
FI980132A7 (fi) * 1998-01-21 1999-07-22 Nokia Mobile Phones Ltd Adaptoituva jälkisuodatin
CA2335006C (en) * 1999-04-19 2007-08-07 At&T Corp. Method and apparatus for performing packet loss or frame erasure concealment
DE10345995B4 (de) * 2003-10-02 2005-07-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zum Verarbeiten eines Signals mit einer Sequenz von diskreten Werten
DE102004009949B4 (de) * 2004-03-01 2006-03-09 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zum Ermitteln eines Schätzwertes
DE102004021403A1 (de) * 2004-04-30 2005-11-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Informationssignalverarbeitung durch Modifikation in der Spektral-/Modulationsspektralbereichsdarstellung
ATE537536T1 (de) * 2004-10-26 2011-12-15 Panasonic Corp Sprachkodierungsvorrichtung und sprachkodierungsverfahren
CN101120399B (zh) * 2005-01-31 2011-07-06 斯凯普有限公司 加权叠加方法
US7987089B2 (en) * 2006-07-31 2011-07-26 Qualcomm Incorporated Systems and methods for modifying a zero pad region of a windowed frame of an audio signal
PT2076901T (pt) * 2006-10-25 2017-08-23 Fraunhofer Ges Forschung Aparelho e método para gerar valores de sub-banda de áudio e aparelho e método para gerar amostras de áudio de domínio de tempo
KR101016224B1 (ko) * 2006-12-12 2011-02-25 프라운호퍼-게젤샤프트 추르 푀르데룽 데어 안제반텐 포르슝 에 파우 인코더, 디코더 및 시간 영역 데이터 스트림을 나타내는 데이터 세그먼트를 인코딩하고 디코딩하는 방법
FR2911228A1 (fr) * 2007-01-05 2008-07-11 France Telecom Codage par transformee, utilisant des fenetres de ponderation et a faible retard.
ES2666719T3 (es) * 2007-12-21 2018-05-07 Orange Codificación/decodificación por transformada, con ventanas adaptativas
WO2010032992A2 (ko) * 2008-09-18 2010-03-25 한국전자통신연구원 Mdct기반의 코너와 이종의 코더간 변환에서의 인코딩 장치 및 디코딩 장치

Also Published As

Publication number Publication date
EP2727107A1 (fr) 2014-05-07
KR101966782B1 (ko) 2019-04-08
BR112013033727B1 (pt) 2021-09-21
WO2013001226A1 (fr) 2013-01-03
ES2735279T3 (es) 2019-12-17
CN103930946B (zh) 2016-12-14
RU2604994C2 (ru) 2016-12-20
US8847795B2 (en) 2014-09-30
JP6109162B2 (ja) 2017-04-05
BR112013033727A2 (pt) 2017-01-31
KR20140085415A (ko) 2014-07-07
CA2839971C (fr) 2019-04-16
CN103930946A (zh) 2014-07-16
FR2977439A1 (fr) 2013-01-04
JP2014523544A (ja) 2014-09-11
EP2727107B1 (fr) 2019-05-15
US20140139362A1 (en) 2014-05-22
RU2014102603A (ru) 2015-08-10
CA2839971A1 (fr) 2013-01-03

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