CO6351831A2 - Codificador de audio y decodificador de audio - Google Patents

Codificador de audio y decodificador de audio

Info

Publication number
CO6351831A2
CO6351831A2 CO11006444A CO11006444A CO6351831A2 CO 6351831 A2 CO6351831 A2 CO 6351831A2 CO 11006444 A CO11006444 A CO 11006444A CO 11006444 A CO11006444 A CO 11006444A CO 6351831 A2 CO6351831 A2 CO 6351831A2
Authority
CO
Colombia
Prior art keywords
coefficient
audio
encoded
encoder
audio encoder
Prior art date
Application number
CO11006444A
Other languages
English (en)
Inventor
Markus Multrus
Bernhard Grill
Guillaume Fuchs
Stefan Geyersberger
Nikolaus Rettelbach
Virgilio Bacigalupo
Original Assignee
Fraunhofer Ges 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 Ges Ev filed Critical Fraunhofer Ges Ev
Publication of CO6351831A2 publication Critical patent/CO6351831A2/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
    • 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
    • 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
    • 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
    • H03M7/3059—Digital compression and data reduction techniques where the original information is represented by a subset or similar information, e.g. lossy compression
    • 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
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • H03M7/4006—Conversion to or from arithmetic code
    • H03M7/4012—Binary arithmetic codes
    • H03M7/4018—Context adapative binary arithmetic codes [CABAC]

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)
  • Spectroscopy & Molecular Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

Un codificador de audio (100) para codificar segmentos de coeficientes, donde los segmentos de coeficientes representan diferentes resoluciones de tiempo o frecuencia de una señal de audio tomada como muestra, donde el codificador de audio (100) comprende un procesador (110) para derivar un contexto de codificación para un coeficiente que se está codificando de un segmento actual sobre la base de un coeficiente anteriormente codificado de un segmento anterior, donde el coeficiente anteriormente codificado representa una resolución diferente de tiempo o frecuencia que el coeficiente que se está codificando actualmente. El codificador de audio (100) comprende además un codificador por entropía (120) para codificar por entropía el coeficiente actual sobre la base del contexto de codificación para obtener una secuencia de audio codificada.
CO11006444A 2008-07-11 2011-01-21 Codificador de audio y decodificador de audio CO6351831A2 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7984208P 2008-07-11 2008-07-11
US10382008P 2008-10-08 2008-10-08

Publications (1)

Publication Number Publication Date
CO6351831A2 true CO6351831A2 (es) 2011-12-20

Family

ID=40886050

Family Applications (1)

Application Number Title Priority Date Filing Date
CO11006444A CO6351831A2 (es) 2008-07-11 2011-01-21 Codificador de audio y decodificador de audio

Country Status (22)

Country Link
US (6) US8930202B2 (es)
EP (10) EP3300076B1 (es)
JP (1) JP5606433B2 (es)
KR (1) KR101456641B1 (es)
CN (1) CN102089813B (es)
AR (1) AR072422A1 (es)
AU (1) AU2009267543B2 (es)
BR (4) BR122021007875B1 (es)
CA (1) CA2729925C (es)
CO (1) CO6351831A2 (es)
DK (1) DK3573056T3 (es)
ES (3) ES2651437T3 (es)
FI (1) FI3573056T3 (es)
HK (1) HK1253032A1 (es)
MX (1) MX2011000379A (es)
MY (1) MY160260A (es)
PL (3) PL2301019T3 (es)
PT (3) PT3573056T (es)
RU (1) RU2487427C2 (es)
TW (1) TWI449033B (es)
WO (1) WO2010003479A1 (es)
ZA (1) ZA201009258B (es)

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JP6065452B2 (ja) * 2012-08-14 2017-01-25 富士通株式会社 データ埋め込み装置及び方法、データ抽出装置及び方法、並びにプログラム
JP6434411B2 (ja) * 2012-09-24 2018-12-05 サムスン エレクトロニクス カンパニー リミテッド フレームエラー隠匿方法及びその装置、並びにオーディオ復号化方法及びその装置
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JP6146069B2 (ja) 2013-03-18 2017-06-14 富士通株式会社 データ埋め込み装置及び方法、データ抽出装置及び方法、並びにプログラム
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JP5773502B2 (ja) * 2010-01-12 2015-09-02 フラウンホーファーゲゼルシャフトツール フォルデルング デル アンゲヴァンテン フォルシユング エー．フアー． オーディオ符号化器、オーディオ復号器、オーディオ情報を符号化するための方法、オーディオ情報を復号するための方法、および上位状態値と間隔境界との両方を示すハッシュテーブルを用いたコンピュータプログラム
JP6385433B2 (ja) * 2013-10-18 2018-09-05 フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン オーディオ信号のスペクトルのスペクトル係数のコード化

Also Published As

Publication number Publication date
EP3937167A1 (en) 2022-01-12
EP2301019A1 (en) 2011-03-30
US20230260524A1 (en) 2023-08-17
EP3937167B1 (en) 2023-05-10
EP4376307A2 (en) 2024-05-29
PT3300076T (pt) 2019-07-17
US20190189136A1 (en) 2019-06-20
ES2651437T3 (es) 2018-01-26
WO2010003479A1 (en) 2010-01-14
US11942101B2 (en) 2024-03-26
EP4376305A2 (en) 2024-05-29
EP4224471A3 (en) 2023-09-06
PT3573056T (pt) 2022-10-24
EP3300076A1 (en) 2018-03-28
ES2731424T3 (es) 2019-11-15
CN102089813A (zh) 2011-06-08
US11670310B2 (en) 2023-06-06
CA2729925C (en) 2016-03-29
EP4369609A3 (en) 2024-05-22
JP2011527443A (ja) 2011-10-27
PL3300076T3 (pl) 2019-11-29
MX2011000379A (es) 2011-02-25
US20230326470A1 (en) 2023-10-12
EP4369609A2 (en) 2024-05-15
BR122021007798B1 (pt) 2021-10-26
US10242681B2 (en) 2019-03-26
KR101456641B1 (ko) 2014-11-04
EP2301019B1 (en) 2017-10-04
RU2487427C2 (ru) 2013-07-10
BR122021008239B1 (pt) 2022-03-03
EP4376306A2 (en) 2024-05-29
FI3573056T3 (fi) 2022-11-30
RU2011102424A (ru) 2012-07-27
ZA201009258B (en) 2011-11-30
MY160260A (en) 2017-02-28
CN102089813B (zh) 2013-11-20
DK3573056T3 (da) 2022-10-03
BR122021007875B1 (pt) 2022-02-22
EP4224471A2 (en) 2023-08-09
US20150194160A1 (en) 2015-07-09
EP3300076B1 (en) 2019-04-24
PL2301019T3 (pl) 2018-04-30
PL3573056T3 (pl) 2022-12-19
US10685659B2 (en) 2020-06-16
AR072422A1 (es) 2010-08-25
US20110173007A1 (en) 2011-07-14
PT2301019T (pt) 2017-12-26
BRPI0910796A2 (pt) 2020-11-03
KR20110040822A (ko) 2011-04-20
EP3573056B1 (en) 2022-08-17
JP5606433B2 (ja) 2014-10-15
EP4224472A1 (en) 2023-08-09
EP3573056A1 (en) 2019-11-27
HK1253032A1 (zh) 2019-06-06
BRPI0910796B1 (pt) 2021-07-13
TW201007698A (en) 2010-02-16
CA2729925A1 (en) 2010-01-14
US8930202B2 (en) 2015-01-06
TWI449033B (zh) 2014-08-11
ES2934052T3 (es) 2023-02-16
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AU2009267543A1 (en) 2010-01-14

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