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MX2015013927A - Codificador y decodificador de audio. - Google Patents

Codificador y decodificador de audio.

Info

Publication number
MX2015013927A
MX2015013927A MX2015013927A MX2015013927A MX2015013927A MX 2015013927 A MX2015013927 A MX 2015013927A MX 2015013927 A MX2015013927 A MX 2015013927A MX 2015013927 A MX2015013927 A MX 2015013927A MX 2015013927 A MX2015013927 A MX 2015013927A
Authority
MX
Mexico
Prior art keywords
blocks
transform coefficients
encoder
envelope
addition
Prior art date
Application number
MX2015013927A
Other languages
English (en)
Other versions
MX343673B (es
Inventor
Lars Villemoes
Janusz Klejsa
Per Hedelin
Original Assignee
Dolby Int Ab
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 Dolby Int Ab filed Critical Dolby Int Ab
Publication of MX2015013927A publication Critical patent/MX2015013927A/es
Publication of MX343673B publication Critical patent/MX343673B/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
    • G10L19/032—Quantisation or dequantisation of spectral components
    • 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
    • G10L19/04—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

Landscapes

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

Abstract

El presente documento se refiere a un sistema de codificación y decodificación de audio (referido como un sistema codec de audio). En particular, el presente documento se refiere a un sistema códec de audio en base a la transformada, que es particularmente muy adecuado para codificar/decodificar voz. Se describe un codificador de voz en base a la transformada (100, 170) configurado para codificar una señal de voz en una corriente de bits. El codificador (100, 170) comprende una unidad de encuadre (101) configurada para recibir un conjunto (132, 332) de bloques; en donde el conjunto (132, 332) de bloques comprende una pluralidad de bloques secuenciales (131) de coeficientes de transformada; en donde la pluralidad de bloques (131) es indicativa de muestras de la señal de voz; en donde un bloque (131) de coeficientes de transformada comprende una pluralidad de coeficientes de transformada para una pluralidad correspondiente de bins de frecuencia (301) Además, el codificador (100, 170) comprende una unidad de estimación de la envolvente (102) configurada para determinar una envolvente actual (133) en base a la pluralidad de bloques secuenciales (131) de coeficientes de transformada; en donde la envolvente actual (133) es indicativa de una pluralidad de valores de energía espectral (303) para la correspondiente pluralidad de bins de frecuencia (301) Además, el codificador (100, 170) comprende una unidad de interpolación de la envolvente (104) configurada para determinar una pluralidad de envolventes interpoladas (136) para la pluralidad de bloques (131) de coeficientes de transformada, respectivamente, en base a la envolvente actual (133). Además, el codificador (100, 170) comprende una unidad de aplanamiento (108) configurado para determinar una pluralidad de bloques (140) de coeficientes de transformada aplanadados mediante el aplanamiento de la correspondiente pluralidad de bloques (131) de coeficientes de transformada uttilizando la correspondiente pluralidad de envolventes interpoladas (136), respectivamente; en donde la corriente de bits se determina en base a la pluralidad de bloques (140) de coeficientes de transformada aplanadados.
MX2015013927A 2013-04-05 2014-04-04 Codificador y decodificador de audio. MX343673B (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201361808675P 2013-04-05 2013-04-05
US201361875553P 2013-09-09 2013-09-09
PCT/EP2014/056851 WO2014161991A2 (en) 2013-04-05 2014-04-04 Audio encoder and decoder

Publications (2)

Publication Number Publication Date
MX2015013927A true MX2015013927A (es) 2015-12-11
MX343673B MX343673B (es) 2016-11-16

Family

ID=50439392

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2015013927A MX343673B (es) 2013-04-05 2014-04-04 Codificador y decodificador de audio.

Country Status (19)

Country Link
US (4) US10043528B2 (es)
EP (3) EP2981958B1 (es)
JP (1) JP6227117B2 (es)
KR (5) KR102028888B1 (es)
CN (2) CN109712633B (es)
AU (8) AU2014247000B2 (es)
BR (3) BR122020017853B1 (es)
CA (6) CA3029037C (es)
DK (1) DK2981958T3 (es)
ES (2) ES2982183T3 (es)
HU (1) HUE039143T2 (es)
IL (6) IL294836B2 (es)
MX (1) MX343673B (es)
MY (2) MY198461A (es)
PL (1) PL2981958T3 (es)
RU (3) RU2740359C2 (es)
SG (1) SG11201507703SA (es)
UA (1) UA114967C2 (es)
WO (1) WO2014161991A2 (es)

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Publication number Publication date
DK2981958T3 (en) 2018-05-28
EP2981958A2 (en) 2016-02-10
CA2908625A1 (en) 2014-10-09
CA3029041A1 (en) 2014-10-09
BR112015025139A2 (pt) 2017-07-18
US20160064007A1 (en) 2016-03-03
AU2018260843B2 (en) 2020-09-03
US10043528B2 (en) 2018-08-07
CA2948694A1 (en) 2014-10-09
BR122020017837B1 (pt) 2022-08-23
RU2015147276A (ru) 2017-05-16
EP2981958B1 (en) 2018-03-07
AU2023200174B2 (en) 2024-02-22
AU2024203054A1 (en) 2024-05-30
IL278164B (en) 2022-08-01
IL258331A (en) 2018-05-31
AU2024219670B2 (en) 2025-11-20
CN105247614A (zh) 2016-01-13
RU2017129566A (ru) 2019-02-05
ES2982183T3 (es) 2024-10-15
US20200126574A1 (en) 2020-04-23
AU2017201874A1 (en) 2017-04-06
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RU2630887C2 (ru) 2017-09-13
AU2024203054B2 (en) 2024-06-13
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JP2016514857A (ja) 2016-05-23
KR102028888B1 (ko) 2019-11-08
CN109712633B (zh) 2023-07-07
CA3029033C (en) 2021-03-30
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KR20150127654A (ko) 2015-11-17
RU2740690C2 (ru) 2021-01-19
BR122020017853B1 (pt) 2023-03-14
US12444426B2 (en) 2025-10-14
BR112015025139B1 (pt) 2022-03-15
IL258331B (en) 2020-11-30
IL278164A (en) 2020-11-30
RU2017129566A3 (es) 2020-11-02
IL294836B2 (en) 2024-10-01
MX343673B (es) 2016-11-16
EP3352167B1 (en) 2019-10-02
CA3029033A1 (en) 2014-10-09
KR102383819B1 (ko) 2022-04-08
KR102150496B1 (ko) 2020-09-01
AU2024219670A1 (en) 2024-10-03
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CA2948694C (en) 2019-02-05
KR101739789B1 (ko) 2017-05-25
AU2017201872B2 (en) 2018-08-09
EP3671738A1 (en) 2020-06-24
ES2665599T3 (es) 2018-04-26
AU2014247000A1 (en) 2015-10-08
IL252640A0 (en) 2017-07-31
AU2023200174A1 (en) 2023-02-16
JP6227117B2 (ja) 2017-11-08
CA2997882A1 (en) 2014-10-09
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US20180322886A1 (en) 2018-11-08
IL312887A (en) 2024-07-01
KR102245916B1 (ko) 2021-04-30
RU2017129552A (ru) 2019-02-04
CN105247614B (zh) 2019-04-05
HK1218802A1 (en) 2017-03-10
WO2014161991A3 (en) 2015-04-23
HUE039143T2 (hu) 2018-12-28
EP3671738B1 (en) 2024-06-05
RU2017129552A3 (es) 2020-11-02
RU2740359C2 (ru) 2021-01-13
AU2014247000B2 (en) 2017-04-20
IL241739A0 (en) 2015-11-30
CN109712633A (zh) 2019-05-03
CA3029037C (en) 2021-12-28
AU2018260843A1 (en) 2018-11-22
IL252640B (en) 2018-04-30
KR20210046846A (ko) 2021-04-28
PL2981958T3 (pl) 2018-07-31
US11621009B2 (en) 2023-04-04
UA114967C2 (uk) 2017-08-28
WO2014161991A2 (en) 2014-10-09
AU2020281040A1 (en) 2021-01-07
AU2017201872A1 (en) 2017-04-06
US20230238011A1 (en) 2023-07-27
CA2997882C (en) 2020-06-30
CA2908625C (en) 2017-10-03
EP3352167A1 (en) 2018-07-25
KR20190112191A (ko) 2019-10-02
HK1250836A1 (en) 2019-01-11
IL241739A (en) 2017-06-29

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