BRPI0508309A - codificador, sistema, método, dispositivo e módulo para codificar um sinal de áudio, e, programa de computador - Google Patents

codificador, sistema, método, dispositivo e módulo para codificar um sinal de áudio, e, programa de computador

Info

Publication number
BRPI0508309A
BRPI0508309A BRPI0508309-5A BRPI0508309A BRPI0508309A BR PI0508309 A BRPI0508309 A BR PI0508309A BR PI0508309 A BRPI0508309 A BR PI0508309A BR PI0508309 A BRPI0508309 A BR PI0508309A
Authority
BR
Brazil
Prior art keywords
audio signal
excitation
block
encoder
module
Prior art date
Application number
BRPI0508309-5A
Other languages
English (en)
Inventor
Jari Mokinen
Original Assignee
Nokia Corp
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 Nokia Corp filed Critical Nokia Corp
Publication of BRPI0508309A publication Critical patent/BRPI0508309A/pt

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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • 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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/22—Mode decision, i.e. based on audio signal content versus external parameters
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

CODIFICADOR, SISTEMA, MéTODO, DISPOSITIVO E MóDULO PARA CODIFICAR UM SINAL DE áUDIO, E, PROGRAMA DE COMPUTADOR. A invenção relaciona a um codificador (200) compreendendo uma entrada (201) para entrar com os quadros de um sinal de áudio, um bloco de análise LTP (209) para executar a análise LTP para os quadros do sinal de áudio para formar os parâmetros LTP com base nas propriedades do sinal de áudio, e ao menos um primeiro bloco de excitação (206) para executar a primeira excitação para os quadros do sinal de áudio, e um segundo bloco de excitação (207) para executar a segunda excitação para os quadros do sinal de áudio. O codificador (200) também compreende um bloco de análise de parâmetro (202) para analisar os parâmetros LTP, e um bloco de seleção de excitação (203) para selecionar um bloco de excitação entre o primeiro bloco de excitação (206) e o segundo bloco de excitação (207), para executar a excitação para os quadros do sinal de áudio com base na análise do parâmetro. A invenção também relaciona a um dispositivo, a um sistema, a um módulo e a um programa de computador.
BRPI0508309-5A 2004-02-23 2005-02-22 codificador, sistema, método, dispositivo e módulo para codificar um sinal de áudio, e, programa de computador BRPI0508309A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20045052A FI118835B (fi) 2004-02-23 2004-02-23 Koodausmallin valinta
PCT/FI2005/050043 WO2005081231A1 (en) 2004-02-23 2005-02-22 Coding model selection

Publications (1)

Publication Number Publication Date
BRPI0508309A true BRPI0508309A (pt) 2007-07-24

Family

ID=31725818

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0508309-5A BRPI0508309A (pt) 2004-02-23 2005-02-22 codificador, sistema, método, dispositivo e módulo para codificar um sinal de áudio, e, programa de computador

Country Status (14)

Country Link
US (1) US7747430B2 (pt)
EP (1) EP1719120B1 (pt)
JP (1) JP2007523388A (pt)
KR (2) KR20080083718A (pt)
CN (1) CN1922659B (pt)
AU (1) AU2005215745A1 (pt)
BR (1) BRPI0508309A (pt)
CA (1) CA2555768A1 (pt)
FI (1) FI118835B (pt)
RU (1) RU2006129871A (pt)
SG (1) SG150572A1 (pt)
TW (1) TW200534599A (pt)
WO (1) WO2005081231A1 (pt)
ZA (1) ZA200606714B (pt)

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CN101615910B (zh) * 2009-05-31 2010-12-22 华为技术有限公司 压缩编码的方法、装置和设备以及压缩解码方法
US8670990B2 (en) * 2009-08-03 2014-03-11 Broadcom Corporation Dynamic time scale modification for reduced bit rate audio coding
EP2473995B9 (en) * 2009-10-20 2016-12-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio signal encoder, audio signal decoder, method for providing an encoded representation of an audio content, method for providing a decoded representation of an audio content and computer program for use in low delay applications
KR101696632B1 (ko) 2010-07-02 2017-01-16 돌비 인터네셔널 에이비 선택적인 베이스 포스트 필터
ES2710554T3 (es) * 2010-07-08 2019-04-25 Fraunhofer Ges Forschung Codificador que utiliza cancelación del efecto de solapamiento hacia delante
TWI488176B (zh) 2011-02-14 2015-06-11 Fraunhofer Ges Forschung 音訊信號音軌脈衝位置之編碼與解碼技術
WO2012110448A1 (en) * 2011-02-14 2012-08-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for coding a portion of an audio signal using a transient detection and a quality result
MY165853A (en) 2011-02-14 2018-05-18 Fraunhofer Ges Forschung Linear prediction based coding scheme using spectral domain noise shaping
BR112013020324B8 (pt) 2011-02-14 2022-02-08 Fraunhofer Ges Forschung Aparelho e método para supressão de erro em fala unificada de baixo atraso e codificação de áudio
TWI479478B (zh) 2011-02-14 2015-04-01 弗勞恩霍夫爾協會 用以使用對齊的預看部分將音訊信號解碼的裝置與方法
AU2012217162B2 (en) * 2011-02-14 2015-11-26 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Noise generation in audio codecs
TWI564882B (zh) 2011-02-14 2017-01-01 弗勞恩霍夫爾協會 利用重疊變換之資訊信號表示技術（一）
EP2676267B1 (en) 2011-02-14 2017-07-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Encoding and decoding of pulse positions of tracks of an audio signal
KR101699898B1 (ko) 2011-02-14 2017-01-25 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. 스펙트럼 영역에서 디코딩된 오디오 신호를 처리하기 위한 방법 및 장치
KR101613673B1 (ko) 2011-02-14 2016-04-29 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. 불활성 위상 동안에 잡음 합성을 사용하는 오디오 코덱
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Also Published As

Publication number Publication date
HK1099960A1 (en) 2007-08-31
US7747430B2 (en) 2010-06-29
KR100879976B1 (ko) 2009-01-23
WO2005081231A1 (en) 2005-09-01
CA2555768A1 (en) 2005-09-01
FI20045052A0 (fi) 2004-02-23
RU2006129871A (ru) 2008-03-27
FI118835B (fi) 2008-03-31
US20050192797A1 (en) 2005-09-01
KR20080083718A (ko) 2008-09-18
JP2007523388A (ja) 2007-08-16
EP1719120A1 (en) 2006-11-08
SG150572A1 (en) 2009-03-30
ZA200606714B (en) 2007-11-28
KR20070015155A (ko) 2007-02-01
AU2005215745A1 (en) 2005-09-01
CN1922659B (zh) 2010-05-26
CN1922659A (zh) 2007-02-28
TW200534599A (en) 2005-10-16
FI20045052L (fi) 2005-08-24
EP1719120B1 (en) 2019-06-19

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]
B15K Others concerning applications: alteration of classification

Ipc: G10L 19/22 (2013.01), G10L 19/08 (2013.01)