BRPI0517246A - aparelho de codificação escalável, aparelho de decodificação escalável e métodos para os mesmos - Google Patents
aparelho de codificação escalável, aparelho de decodificação escalável e métodos para os mesmosInfo
- Publication number
- BRPI0517246A BRPI0517246A BRPI0517246-2A BRPI0517246A BRPI0517246A BR PI0517246 A BRPI0517246 A BR PI0517246A BR PI0517246 A BRPI0517246 A BR PI0517246A BR PI0517246 A BRPI0517246 A BR PI0517246A
- Authority
- BR
- Brazil
- Prior art keywords
- scalable
- encoding
- pitch frequency
- methods
- mdct
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 230000005236 sound signal Effects 0.000 abstract 2
- 238000001228 spectrum Methods 0.000 abstract 2
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
-
- 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
-
- 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
- G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor
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)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Abstract
APARELHO DE CODIFICAçãO ESCALáVEL, APARELHO DE DECODIFICAçãO ESCALáVEL E MéTODOS PARA OS MESMOS. A presente invenção refere-se a um aparelho de codificação escalável capaz de reduzir as taxas de bits dos parâmetros codificados, e também capaz de eficientemente codificar sinais de áudio uniformes nos quais várias estruturas harmónicas são coexistentes. No aparelho, uma parte de análise MDCI (111) analisa por MDCI um sinal de áudio (S15) para processos de conversão / codificação. Uma parte de conversão de freqúência de pitch (112) determina o inverso de um período de pitch para calcular uma freqúência de pitch. Uma parte de seleção (113) seleciona espectros localizados nas freqúências que são múltiplos integrais da freqúência de pitch. Uma segunda parte de codificação de camada (106) codifica os espectros selecionados.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004314230 | 2004-10-28 | ||
PCT/JP2005/019661 WO2006046587A1 (ja) | 2004-10-28 | 2005-10-26 | スケーラブル符号化装置、スケーラブル復号化装置、およびこれらの方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
BRPI0517246A true BRPI0517246A (pt) | 2008-10-07 |
Family
ID=36227828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0517246-2A BRPI0517246A (pt) | 2004-10-28 | 2005-10-26 | aparelho de codificação escalável, aparelho de decodificação escalável e métodos para os mesmos |
Country Status (9)
Country | Link |
---|---|
US (1) | US8019597B2 (pt) |
EP (1) | EP1806736B1 (pt) |
JP (1) | JP5036317B2 (pt) |
KR (1) | KR20070083856A (pt) |
CN (1) | CN101044553B (pt) |
AT (1) | ATE480851T1 (pt) |
BR (1) | BRPI0517246A (pt) |
DE (1) | DE602005023503D1 (pt) |
WO (1) | WO2006046587A1 (pt) |
Families Citing this family (17)
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ES2476992T3 (es) * | 2004-11-05 | 2014-07-15 | Panasonic Corporation | Codificador, descodificador, método de codificación y método de descodificaci�n |
WO2008066071A1 (en) * | 2006-11-29 | 2008-06-05 | Panasonic Corporation | Decoding apparatus and audio decoding method |
JPWO2008072732A1 (ja) * | 2006-12-14 | 2010-04-02 | パナソニック株式会社 | 音声符号化装置および音声符号化方法 |
US20100049512A1 (en) * | 2006-12-15 | 2010-02-25 | Panasonic Corporation | Encoding device and encoding method |
US20100017199A1 (en) * | 2006-12-27 | 2010-01-21 | Panasonic Corporation | Encoding device, decoding device, and method thereof |
JP5294713B2 (ja) * | 2007-03-02 | 2013-09-18 | パナソニック株式会社 | 符号化装置、復号装置およびそれらの方法 |
US8527265B2 (en) | 2007-10-22 | 2013-09-03 | Qualcomm Incorporated | Low-complexity encoding/decoding of quantized MDCT spectrum in scalable speech and audio codecs |
CN101903944B (zh) * | 2007-12-18 | 2013-04-03 | Lg电子株式会社 | 用于处理音频信号的方法和装置 |
CN101552005A (zh) * | 2008-04-03 | 2009-10-07 | 华为技术有限公司 | 编码方法、解码方法、系统及装置 |
CN101604983B (zh) * | 2008-06-12 | 2013-04-24 | 华为技术有限公司 | 编解码装置、系统及其方法 |
US8880410B2 (en) | 2008-07-11 | 2014-11-04 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Apparatus and method for generating a bandwidth extended signal |
USRE47180E1 (en) | 2008-07-11 | 2018-12-25 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Apparatus and method for generating a bandwidth extended signal |
RU2512090C2 (ru) * | 2008-07-11 | 2014-04-10 | Фраунхофер-Гезелльшафт Цур Фердерунг Дер Ангевандтен Форшунг Е.Ф. | Устройство и способ генерирования сигнала с расширенной полосой пропускания |
JP5295380B2 (ja) | 2009-10-20 | 2013-09-18 | パナソニック株式会社 | 符号化装置、復号化装置およびこれらの方法 |
JP2011253045A (ja) * | 2010-06-02 | 2011-12-15 | Sony Corp | 符号化装置および符号化方法、復号装置および復号方法、並びにプログラム |
KR101762204B1 (ko) | 2012-05-23 | 2017-07-27 | 니폰 덴신 덴와 가부시끼가이샤 | 부호화 방법, 복호 방법, 부호화 장치, 복호 장치, 프로그램 및 기록 매체 |
US10410398B2 (en) * | 2015-02-20 | 2019-09-10 | Qualcomm Incorporated | Systems and methods for reducing memory bandwidth using low quality tiles |
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2005
- 2005-10-26 JP JP2006543195A patent/JP5036317B2/ja not_active Expired - Fee Related
- 2005-10-26 AT AT05799294T patent/ATE480851T1/de not_active IP Right Cessation
- 2005-10-26 US US11/577,816 patent/US8019597B2/en active Active
- 2005-10-26 CN CN2005800360148A patent/CN101044553B/zh not_active Expired - Fee Related
- 2005-10-26 KR KR1020077009746A patent/KR20070083856A/ko not_active Application Discontinuation
- 2005-10-26 EP EP05799294A patent/EP1806736B1/en not_active Not-in-force
- 2005-10-26 DE DE602005023503T patent/DE602005023503D1/de active Active
- 2005-10-26 WO PCT/JP2005/019661 patent/WO2006046587A1/ja active Application Filing
- 2005-10-26 BR BRPI0517246-2A patent/BRPI0517246A/pt not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
CN101044553A (zh) | 2007-09-26 |
KR20070083856A (ko) | 2007-08-24 |
WO2006046587A1 (ja) | 2006-05-04 |
US20090125300A1 (en) | 2009-05-14 |
CN101044553B (zh) | 2011-06-01 |
JPWO2006046587A1 (ja) | 2008-05-22 |
EP1806736A1 (en) | 2007-07-11 |
EP1806736B1 (en) | 2010-09-08 |
ATE480851T1 (de) | 2010-09-15 |
US8019597B2 (en) | 2011-09-13 |
EP1806736A4 (en) | 2008-03-19 |
DE602005023503D1 (de) | 2010-10-21 |
JP5036317B2 (ja) | 2012-09-26 |
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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 |
Free format text: PROCEDIMENTO AUTOMATICO DE RECLASSIFICACAO. AS CLASSIFICACOES IPC ANTERIORES ERAM: G10L 19/02; G10L 11/00; G10L 11/04; G10L 19/12. Ipc: G10L 19/24 (2013.01), G10L 19/06 (2013.01), G10L 1 Ipc: G10L 19/24 (2013.01), G10L 19/06 (2013.01), G10L 1 |