BRPI0519454A2 - aparelho de codificaÇço reescalonÁvel e mÉtodo de codificaÇço reescalonÁvel - Google Patents
aparelho de codificaÇço reescalonÁvel e mÉtodo de codificaÇço reescalonÁvelInfo
- Publication number
- BRPI0519454A2 BRPI0519454A2 BRPI0519454-7A BRPI0519454A BRPI0519454A2 BR PI0519454 A2 BRPI0519454 A2 BR PI0519454A2 BR PI0519454 A BRPI0519454 A BR PI0519454A BR PI0519454 A2 BRPI0519454 A2 BR PI0519454A2
- Authority
- BR
- Brazil
- Prior art keywords
- signal
- rescalable
- channel
- coding
- sound source
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 abstract 1
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
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Acoustics & Sound (AREA)
- Mathematical Physics (AREA)
- Computational Linguistics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
APARELHO DE CODIFICAÇçO REESCALONÁVEL E MÉTODO DE CODIFICAÇçO REESCALONÁVEL. A presente invenção refere-se a um aparelho de codificação reescalonável em que a degradação da qualidade de som de um sinal decodi ficado pode ser evitada, enquanto a taxa de codificação e a escala do circuito podem ser reduzidas. Neste aparelho, uma parte de processamento de sinal de canal-L (105-1) usa a informação de espaço de canal-L para gerar um sinal de canal-L (L1) para produzir um sinal processado (L2) que é similar a um sinal monofônico (M1). Uma parte de combinação de sinal processado de canal-L (106-1) usa o sinal processado (L2) e um sinal de fonte de som (S1) gerado por uma parte de geração de sinal de fonte de som (104) para gerar um sinal combinado (L3). Uma parte de processamento de sinal de canal-R (105-2) e uma parte de combinação de sinal processado de canal-R (106-2) operam de modo similar. Uma parte de minimização de distorção (103) controla a parte de geração de sinal de fonte de som (104) para gerar tal sinal de fonte de som comum (S1) que a soma das distorções de codificação de sinais combinados (M2, L3, R3) é minimizada.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004381492 | 2004-12-28 | ||
JP2005160187 | 2005-05-31 | ||
PCT/JP2005/023812 WO2006070760A1 (ja) | 2004-12-28 | 2005-12-26 | スケーラブル符号化装置およびスケーラブル符号化方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
BRPI0519454A2 true BRPI0519454A2 (pt) | 2009-01-27 |
Family
ID=36614877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0519454-7A BRPI0519454A2 (pt) | 2004-12-28 | 2005-12-26 | aparelho de codificaÇço reescalonÁvel e mÉtodo de codificaÇço reescalonÁvel |
Country Status (6)
Country | Link |
---|---|
US (1) | US20080162148A1 (pt) |
EP (1) | EP1818910A4 (pt) |
JP (1) | JP4842147B2 (pt) |
KR (1) | KR20070090217A (pt) |
BR (1) | BRPI0519454A2 (pt) |
WO (1) | WO2006070760A1 (pt) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BRPI0607303A2 (pt) * | 2005-01-26 | 2009-08-25 | Matsushita Electric Ind Co Ltd | dispositivo de codificação de voz e método de codificar voz |
EP1959431B1 (en) * | 2005-11-30 | 2010-06-23 | Panasonic Corporation | Scalable coding apparatus and scalable coding method |
JPWO2008016098A1 (ja) * | 2006-08-04 | 2009-12-24 | 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 |
JP4871894B2 (ja) * | 2007-03-02 | 2012-02-08 | パナソニック株式会社 | 符号化装置、復号装置、符号化方法および復号方法 |
KR101398836B1 (ko) * | 2007-08-02 | 2014-05-26 | 삼성전자주식회사 | 스피치 코덱들의 고정 코드북들을 공통 모듈로 구현하는방법 및 장치 |
US8374883B2 (en) * | 2007-10-31 | 2013-02-12 | Panasonic Corporation | Encoder and decoder using inter channel prediction based on optimally determined signals |
US8235897B2 (en) | 2010-04-27 | 2012-08-07 | A.D. Integrity Applications Ltd. | Device for non-invasively measuring glucose |
US12002476B2 (en) | 2010-07-19 | 2024-06-04 | Dolby International Ab | Processing of audio signals during high frequency reconstruction |
EP2628298A1 (en) * | 2010-10-12 | 2013-08-21 | Dolby Laboratories Licensing Corporation | Joint layer optimization for a frame-compatible video delivery |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6345246B1 (en) * | 1997-02-05 | 2002-02-05 | Nippon Telegraph And Telephone Corporation | Apparatus and method for efficiently coding plural channels of an acoustic signal at low bit rates |
DE19742655C2 (de) * | 1997-09-26 | 1999-08-05 | Fraunhofer Ges Forschung | Verfahren und Vorrichtung zum Codieren eines zeitdiskreten Stereosignals |
DE19959156C2 (de) * | 1999-12-08 | 2002-01-31 | Fraunhofer Ges Forschung | Verfahren und Vorrichtung zum Verarbeiten eines zu codierenden Stereoaudiosignals |
SE519985C2 (sv) * | 2000-09-15 | 2003-05-06 | Ericsson Telefon Ab L M | Kodning och avkodning av signaler från flera kanaler |
JP3951690B2 (ja) * | 2000-12-14 | 2007-08-01 | ソニー株式会社 | 符号化装置および方法、並びに記録媒体 |
US6614365B2 (en) * | 2000-12-14 | 2003-09-02 | Sony Corporation | Coding device and method, decoding device and method, and recording medium |
SE0202159D0 (sv) * | 2001-07-10 | 2002-07-09 | Coding Technologies Sweden Ab | Efficientand scalable parametric stereo coding for low bitrate applications |
BRPI0304540B1 (pt) * | 2002-04-22 | 2017-12-12 | Koninklijke Philips N. V | Methods for coding an audio signal, and to decode an coded audio sign, encoder to codify an audio signal, codified audio sign, storage media, and, decoder to decode a coded audio sign |
CN1647156B (zh) * | 2002-04-22 | 2010-05-26 | 皇家飞利浦电子股份有限公司 | 参数编码方法、参数编码器、用于提供音频信号的设备、解码方法、解码器、用于提供解码后的多声道音频信号的设备 |
US7725324B2 (en) * | 2003-12-19 | 2010-05-25 | Telefonaktiebolaget Lm Ericsson (Publ) | Constrained filter encoding of polyphonic signals |
EP1723639B1 (en) * | 2004-03-12 | 2007-11-14 | Nokia Corporation | Synthesizing a mono audio signal based on an encoded multichannel audio signal |
EP1761916A1 (en) * | 2004-06-22 | 2007-03-14 | Koninklijke Philips Electronics N.V. | Audio encoding and decoding |
US7904292B2 (en) * | 2004-09-30 | 2011-03-08 | Panasonic Corporation | Scalable encoding device, scalable decoding device, and method thereof |
SE0402650D0 (sv) * | 2004-11-02 | 2004-11-02 | Coding Tech Ab | Improved parametric stereo compatible coding of spatial audio |
WO2006082790A1 (ja) * | 2005-02-01 | 2006-08-10 | Matsushita Electric Industrial Co., Ltd. | スケーラブル符号化装置およびスケーラブル符号化方法 |
US8000967B2 (en) * | 2005-03-09 | 2011-08-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Low-complexity code excited linear prediction encoding |
-
2005
- 2005-12-26 JP JP2006550772A patent/JP4842147B2/ja not_active Expired - Fee Related
- 2005-12-26 WO PCT/JP2005/023812 patent/WO2006070760A1/ja active Application Filing
- 2005-12-26 KR KR1020077014688A patent/KR20070090217A/ko not_active Application Discontinuation
- 2005-12-26 US US11/722,015 patent/US20080162148A1/en not_active Abandoned
- 2005-12-26 EP EP05820383A patent/EP1818910A4/en not_active Withdrawn
- 2005-12-26 BR BRPI0519454-7A patent/BRPI0519454A2/pt not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
US20080162148A1 (en) | 2008-07-03 |
EP1818910A1 (en) | 2007-08-15 |
EP1818910A4 (en) | 2009-11-25 |
JPWO2006070760A1 (ja) | 2008-06-12 |
KR20070090217A (ko) | 2007-09-05 |
JP4842147B2 (ja) | 2011-12-21 |
WO2006070760A1 (ja) | 2006-07-06 |
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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 19/008 (2013.01), G10L 19/24 (2013.01) |