BRPI0515551A - aparelho de codificação de áudio, aparelho de decodificação de áudio, aparelho de comunicação e método de codificação de áudio - Google Patents

aparelho de codificação de áudio, aparelho de decodificação de áudio, aparelho de comunicação e método de codificação de áudio

Info

Publication number
BRPI0515551A
BRPI0515551A BRPI0515551-7A BRPI0515551A BRPI0515551A BR PI0515551 A BRPI0515551 A BR PI0515551A BR PI0515551 A BRPI0515551 A BR PI0515551A BR PI0515551 A BRPI0515551 A BR PI0515551A
Authority
BR
Brazil
Prior art keywords
audio
extended adaptive
enh
adaptive codebook
audio coding
Prior art date
Application number
BRPI0515551-7A
Other languages
English (en)
Inventor
Koji Yoshida
Original Assignee
Matsushita Electric Ind Co Ltd
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 Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of BRPI0515551A publication Critical patent/BRPI0515551A/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
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
    • 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

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)
  • Quality & Reliability (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

"APARELHO DE CODIFICAçãO DE áUDIO, APARELHO DE DECODIFICAçãO DE áUDIO, APARELHO DE COMUNICAçãO E MéTODO DE CODIFICAçãO DE áUDIO". A presente invenção refere-se a um aparelho de codificação de áudio e assim por diante são descritos, os quais podem aperfeiçoar a qualidade do som de sinais de áudio codificados, mesmo em um caso de codificação CELP escalável de sinais de áudio em seções que variam com o tempo. Neste aparelho, uma parte de geração de livro de códigos adaptáveis estendido da camada de aperfeiçoamento (102) gera um livro de códigos adaptável estendido (d_enh_ext <sym>) ap partir tanto do sinais fonte de som de acionamento da camada principal (exc_core ¢n!) recebidos a partir de uma parte de codificação CELP da camada principal (101) como dos sinais de fonte de som de acionamento da camada de perfeiçoamento passados (exc_enh ¢n!) recebidos a partir de um somador (106), e adicionalmente informa o livro de códigos adaptável estendido gerado (d_enh_ext <sym>) para um livro de códigos adaptável estendido da camada de aperfeiçoamento (103) para cada um dos subquadros. Ou seja, a parte de geração de livro de códigos adaptável estendido da camada de aperfeiçoamento (102) atualiza o livro de códigos adaptável estendido (d_enh_ext <sym>) para cada um dos subquadros.
BRPI0515551-7A 2004-09-17 2005-09-15 aparelho de codificação de áudio, aparelho de decodificação de áudio, aparelho de comunicação e método de codificação de áudio BRPI0515551A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004271886 2004-09-17
PCT/JP2005/017053 WO2006030864A1 (ja) 2004-09-17 2005-09-15 音声符号化装置、音声復号装置、通信装置及び音声符号化方法

Publications (1)

Publication Number Publication Date
BRPI0515551A true BRPI0515551A (pt) 2008-07-29

Family

ID=36060114

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0515551-7A BRPI0515551A (pt) 2004-09-17 2005-09-15 aparelho de codificação de áudio, aparelho de decodificação de áudio, aparelho de comunicação e método de codificação de áudio

Country Status (8)

Country Link
US (1) US7783480B2 (pt)
EP (1) EP1793373A4 (pt)
JP (1) JP4781272B2 (pt)
KR (1) KR20070061818A (pt)
CN (1) CN101023470A (pt)
BR (1) BRPI0515551A (pt)
RU (1) RU2007109825A (pt)
WO (1) WO2006030864A1 (pt)

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JP4445328B2 (ja) 2004-05-24 2010-04-07 パナソニック株式会社 音声・楽音復号化装置および音声・楽音復号化方法
JPWO2007116809A1 (ja) * 2006-03-31 2009-08-20 パナソニック株式会社 ステレオ音声符号化装置、ステレオ音声復号装置、およびこれらの方法
JP4999846B2 (ja) * 2006-08-04 2012-08-15 パナソニック株式会社 ステレオ音声符号化装置、ステレオ音声復号装置、およびこれらの方法
EP2096631A4 (en) * 2006-12-13 2012-07-25 Panasonic Corp TONE DECODING DEVICE AND POWER ADJUSTMENT METHOD
CN101617362B (zh) * 2007-03-02 2012-07-18 松下电器产业株式会社 语音解码装置和语音解码方法
BRPI0808200A8 (pt) * 2007-03-02 2017-09-12 Panasonic Corp Dispositivo de codificação de áudio e dispositivo de decodificação de áudio
US8160872B2 (en) * 2007-04-05 2012-04-17 Texas Instruments Incorporated Method and apparatus for layered code-excited linear prediction speech utilizing linear prediction excitation corresponding to optimal gains
US8527265B2 (en) 2007-10-22 2013-09-03 Qualcomm Incorporated Low-complexity encoding/decoding of quantized MDCT spectrum in scalable speech and audio codecs
US8209190B2 (en) * 2007-10-25 2012-06-26 Motorola Mobility, Inc. Method and apparatus for generating an enhancement layer within an audio coding system
US8515767B2 (en) * 2007-11-04 2013-08-20 Qualcomm Incorporated Technique for encoding/decoding of codebook indices for quantized MDCT spectrum in scalable speech and audio codecs
US20120053949A1 (en) * 2009-05-29 2012-03-01 Nippon Telegraph And Telephone Corp. Encoding device, decoding device, encoding method, decoding method and program therefor
WO2011058758A1 (ja) * 2009-11-13 2011-05-19 パナソニック株式会社 符号化装置、復号装置およびこれらの方法
RU2464651C2 (ru) * 2009-12-22 2012-10-20 Общество с ограниченной ответственностью "Спирит Корп" Способ и устройство многоуровневого масштабируемого устойчивого к информационным потерям кодирования речи для сетей с коммутацией пакетов
US8442837B2 (en) * 2009-12-31 2013-05-14 Motorola Mobility Llc Embedded speech and audio coding using a switchable model core
JP6147744B2 (ja) * 2011-07-29 2017-06-14 ディーティーエス・エルエルシーＤｔｓ Ｌｌｃ 適応音声了解度処理システムおよび方法
KR102138320B1 (ko) 2011-10-28 2020-08-11 한국전자통신연구원 통신 시스템에서 신호 코덱 장치 및 방법
JP6082703B2 (ja) * 2012-01-20 2017-02-15 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカＰａｎａｓｏｎｉｃ Ｉｎｔｅｌｌｅｃｔｕａｌ Ｐｒｏｐｅｒｔｙ Ｃｏｒｐｏｒａｔｉｏｎ ｏｆ Ａｍｅｒｉｃａ 音声復号装置及び音声復号方法
US20130208809A1 (en) * 2012-02-14 2013-08-15 Microsoft Corporation Multi-layer rate control
CN104217727B (zh) * 2013-05-31 2017-07-21 华为技术有限公司 信号解码方法及设备

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JP3483958B2 (ja) 1994-10-28 2004-01-06 三菱電機株式会社 広帯域音声復元装置及び広帯域音声復元方法及び音声伝送システム及び音声伝送方法
JP3139602B2 (ja) * 1995-03-24 2001-03-05 日本電信電話株式会社 音響信号符号化方法及び復号化方法
JP3970327B2 (ja) 1996-02-15 2007-09-05 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴイ 複雑さが軽減された信号送信システム
US6704703B2 (en) * 2000-02-04 2004-03-09 Scansoft, Inc. Recursively excited linear prediction speech coder
DE60102975T2 (de) 2000-05-22 2005-05-12 Texas Instruments Inc., Dallas Vorrichtung und Verfahren zur Breitbandcodierung von Sprachsignalen
EP1431962B1 (en) 2000-05-22 2006-04-05 Texas Instruments Incorporated Wideband speech coding system and method
JP3467469B2 (ja) * 2000-10-31 2003-11-17 Ｎｅｃエレクトロニクス株式会社 音声復号装置および音声復号プログラムを記録した記録媒体
US7606703B2 (en) * 2000-11-15 2009-10-20 Texas Instruments Incorporated Layered celp system and method with varying perceptual filter or short-term postfilter strengths
JP4290917B2 (ja) * 2002-02-08 2009-07-08 株式会社エヌ・ティ・ティ・ドコモ 復号装置、符号化装置、復号方法、及び、符号化方法
JP2003323199A (ja) 2002-04-26 2003-11-14 Matsushita Electric Ind Co Ltd 符号化装置、復号化装置及び符号化方法、復号化方法
AU2003234763A1 (en) * 2002-04-26 2003-11-10 Matsushita Electric Industrial Co., Ltd. Coding device, decoding device, coding method, and decoding method
JP4331928B2 (ja) * 2002-09-11 2009-09-16 パナソニック株式会社 音声符号化装置、音声復号化装置、及びそれらの方法
JP4287637B2 (ja) * 2002-10-17 2009-07-01 パナソニック株式会社 音声符号化装置、音声符号化方法及びプログラム
EP1619664B1 (en) * 2003-04-30 2012-01-25 Panasonic Corporation Speech coding apparatus, speech decoding apparatus and methods thereof
DE602004004950T2 (de) * 2003-07-09 2007-10-31 Samsung Electronics Co., Ltd., Suwon Vorrichtung und Verfahren zum bitraten-skalierbaren Sprachkodieren und -dekodieren

Also Published As

Publication number Publication date
CN101023470A (zh) 2007-08-22
US7783480B2 (en) 2010-08-24
KR20070061818A (ko) 2007-06-14
EP1793373A4 (en) 2008-10-01
JPWO2006030864A1 (ja) 2008-05-15
EP1793373A1 (en) 2007-06-06
US20080281587A1 (en) 2008-11-13
RU2007109825A (ru) 2008-09-27
JP4781272B2 (ja) 2011-09-28
WO2006030864A1 (ja) 2006-03-23

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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]