BR0305710A - Aparelho de decodificação de áudio e método de decodificação de áudio - Google Patents
Aparelho de decodificação de áudio e método de decodificação de áudioInfo
- Publication number
- BR0305710A BR0305710A BR0305710-0A BR0305710A BR0305710A BR 0305710 A BR0305710 A BR 0305710A BR 0305710 A BR0305710 A BR 0305710A BR 0305710 A BR0305710 A BR 0305710A
- Authority
- BR
- Brazil
- Prior art keywords
- audio decoding
- few calculations
- signal
- subband
- decoding device
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
Abstract
"APARELHO DE DECODIFICAçãO DE áUDIO E MéTODO DE DECODIFICAçãO DE áUDIO". A invenção refere-se a um sinal de áudio de alta qualidade, de banda larga, decodificado com poucos cálculos a uma baixa taxa de bits. Os componentes de espectro indesejados que acompanham a injeção de sinal senoidal por um filtro de sub-banda de síntese construído com operações de valor real são suprimidos pela inserção de um sinal de supressão nas sub-bandas adjacentes à sub-banda na qual a onda senoidal é injetada. Isto toma possível injetar uma senóide desejada com poucos cálculos.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002225068 | 2002-08-01 | ||
PCT/JP2003/009646 WO2004013841A1 (en) | 2002-08-01 | 2003-07-30 | Audio decoding apparatus and audio decoding method based on spectral band repliction |
Publications (1)
Publication Number | Publication Date |
---|---|
BR0305710A true BR0305710A (pt) | 2004-09-28 |
Family
ID=31492144
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR0305710-0A BR0305710A (pt) | 2002-08-01 | 2003-07-30 | Aparelho de decodificação de áudio e método de decodificação de áudio |
BRPI0305710-0A BRPI0305710B1 (pt) | 2002-08-01 | 2003-07-30 | "apparatus and method of decoding of audio" |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0305710-0A BRPI0305710B1 (pt) | 2002-08-01 | 2003-07-30 | "apparatus and method of decoding of audio" |
Country Status (14)
Country | Link |
---|---|
US (1) | US7058571B2 (pt) |
EP (1) | EP1527442B1 (pt) |
JP (1) | JP3646938B1 (pt) |
KR (1) | KR100723753B1 (pt) |
CN (1) | CN1286087C (pt) |
AT (1) | ATE322735T1 (pt) |
AU (1) | AU2003252727A1 (pt) |
BR (2) | BR0305710A (pt) |
CA (1) | CA2464408C (pt) |
DE (1) | DE60304479T2 (pt) |
ES (1) | ES2261974T3 (pt) |
HK (1) | HK1073525A1 (pt) |
TW (1) | TWI303410B (pt) |
WO (1) | WO2004013841A1 (pt) |
Families Citing this family (50)
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SE0202159D0 (sv) | 2001-07-10 | 2002-07-09 | Coding Technologies Sweden Ab | Efficientand scalable parametric stereo coding for low bitrate applications |
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US7502743B2 (en) * | 2002-09-04 | 2009-03-10 | Microsoft Corporation | Multi-channel audio encoding and decoding with multi-channel transform selection |
SE0202770D0 (sv) | 2002-09-18 | 2002-09-18 | Coding Technologies Sweden Ab | Method for reduction of aliasing introduces by spectral envelope adjustment in real-valued filterbanks |
US20050004793A1 (en) * | 2003-07-03 | 2005-01-06 | Pasi Ojala | Signal adaptation for higher band coding in a codec utilizing band split coding |
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KR20070084002A (ko) * | 2004-11-05 | 2007-08-24 | 마츠시타 덴끼 산교 가부시키가이샤 | 스케일러블 복호화 장치 및 스케일러블 부호화 장치 |
EP1840874B1 (en) * | 2005-01-11 | 2019-04-10 | NEC Corporation | Audio encoding device, audio encoding method, and audio encoding program |
JP5107574B2 (ja) * | 2005-02-24 | 2012-12-26 | パナソニック株式会社 | データ再生装置、データ再生方法、プログラム、および集積回路 |
CN101180676B (zh) * | 2005-04-01 | 2011-12-14 | 高通股份有限公司 | 用于谱包络表示的向量量化的方法和设备 |
US7917561B2 (en) * | 2005-09-16 | 2011-03-29 | Coding Technologies Ab | Partially complex modulated filter bank |
CN100568863C (zh) * | 2005-09-30 | 2009-12-09 | 中国科学院上海微系统与信息技术研究所 | 基于多子带滤波器组的发射、接收装置及其方法 |
KR20080047443A (ko) * | 2005-10-14 | 2008-05-28 | 마츠시타 덴끼 산교 가부시키가이샤 | 변환 부호화 장치 및 변환 부호화 방법 |
US7953604B2 (en) * | 2006-01-20 | 2011-05-31 | Microsoft Corporation | Shape and scale parameters for extended-band frequency coding |
US7831434B2 (en) * | 2006-01-20 | 2010-11-09 | Microsoft Corporation | Complex-transform channel coding with extended-band frequency coding |
US8190425B2 (en) * | 2006-01-20 | 2012-05-29 | Microsoft Corporation | Complex cross-correlation parameters for multi-channel audio |
MX2008013078A (es) | 2007-02-14 | 2008-11-28 | Lg Electronics Inc | Metodos y aparatos para codificar y descodificar señales de audio basadas en objeto. |
US8214200B2 (en) * | 2007-03-14 | 2012-07-03 | Xfrm, Inc. | Fast MDCT (modified discrete cosine transform) approximation of a windowed sinusoid |
KR101080421B1 (ko) * | 2007-03-16 | 2011-11-04 | 삼성전자주식회사 | 정현파 오디오 코딩 방법 및 장치 |
KR101411900B1 (ko) * | 2007-05-08 | 2014-06-26 | 삼성전자주식회사 | 오디오 신호의 부호화 및 복호화 방법 및 장치 |
US7885819B2 (en) | 2007-06-29 | 2011-02-08 | Microsoft Corporation | Bitstream syntax for multi-process audio decoding |
KR101380170B1 (ko) * | 2007-08-31 | 2014-04-02 | 삼성전자주식회사 | 미디어 신호 인코딩/디코딩 방법 및 장치 |
KR101425355B1 (ko) * | 2007-09-05 | 2014-08-06 | 삼성전자주식회사 | 파라메트릭 오디오 부호화 및 복호화 장치와 그 방법 |
CN102568489B (zh) * | 2007-11-06 | 2015-09-16 | 诺基亚公司 | 编码器 |
US20100250260A1 (en) * | 2007-11-06 | 2010-09-30 | Lasse Laaksonen | Encoder |
KR101161866B1 (ko) * | 2007-11-06 | 2012-07-04 | 노키아 코포레이션 | 오디오 코딩 장치 및 그 방법 |
EP2212884B1 (en) * | 2007-11-06 | 2013-01-02 | Nokia Corporation | An encoder |
ES2372014T3 (es) | 2008-07-11 | 2012-01-13 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Aparato y método para calcular datos de ampliación de ancho de banda utilizando un encuadre controlado por pendiente espectral. |
CN101751925B (zh) * | 2008-12-10 | 2011-12-21 | 华为技术有限公司 | 一种语音解码方法及装置 |
ES2904373T3 (es) | 2009-01-16 | 2022-04-04 | Dolby Int Ab | Transposición armónica mejorada de producto cruzado |
KR101599884B1 (ko) * | 2009-08-18 | 2016-03-04 | 삼성전자주식회사 | 멀티 채널 오디오 디코딩 방법 및 장치 |
US8515768B2 (en) * | 2009-08-31 | 2013-08-20 | Apple Inc. | Enhanced audio decoder |
JP5754899B2 (ja) * | 2009-10-07 | 2015-07-29 | ソニー株式会社 | 復号装置および方法、並びにプログラム |
WO2011114192A1 (en) * | 2010-03-19 | 2011-09-22 | Nokia Corporation | Method and apparatus for audio coding |
JP5651980B2 (ja) | 2010-03-31 | 2015-01-14 | ソニー株式会社 | 復号装置、復号方法、およびプログラム |
JP6075743B2 (ja) * | 2010-08-03 | 2017-02-08 | ソニー株式会社 | 信号処理装置および方法、並びにプログラム |
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US8762158B2 (en) * | 2010-08-06 | 2014-06-24 | Samsung Electronics Co., Ltd. | Decoding method and decoding apparatus therefor |
JP5552988B2 (ja) * | 2010-09-27 | 2014-07-16 | 富士通株式会社 | 音声帯域拡張装置および音声帯域拡張方法 |
JP2011059714A (ja) * | 2010-12-06 | 2011-03-24 | Sony Corp | 信号符号化装置及び方法、信号復号装置及び方法、並びにプログラム及び記録媒体 |
JP5743137B2 (ja) * | 2011-01-14 | 2015-07-01 | ソニー株式会社 | 信号処理装置および方法、並びにプログラム |
JP5569476B2 (ja) * | 2011-07-11 | 2014-08-13 | ソニー株式会社 | 信号符号化装置及び方法、信号復号装置及び方法、並びにプログラム及び記録媒体 |
WO2013048171A2 (ko) * | 2011-09-28 | 2013-04-04 | 엘지전자 주식회사 | 음성 신호 부호화 방법 및 음성 신호 복호화 방법 그리고 이를 이용하는 장치 |
KR101672025B1 (ko) * | 2012-01-20 | 2016-11-02 | 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. | 사인곡선 대체를 이용하여 오디오 인코딩 및 디코딩하기 위한 장치 및 방법 |
KR101248125B1 (ko) | 2012-10-15 | 2013-03-27 | (주)알고코리아 | 주변소음 소거와 주파수 채널별 압축 기능을 가진 보청기 |
WO2014081736A2 (en) * | 2012-11-20 | 2014-05-30 | Dts, Inc. | Reconstruction of a high frequency range in low-bitrate audio coding using predictive pattern analysis |
CN107545900B (zh) * | 2017-08-16 | 2020-12-01 | 广州广晟数码技术有限公司 | 带宽扩展编码和解码中高频弦信号生成的方法和装置 |
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-
2003
- 2003-07-30 JP JP2004525798A patent/JP3646938B1/ja not_active Expired - Lifetime
- 2003-07-30 ES ES03766661T patent/ES2261974T3/es not_active Expired - Lifetime
- 2003-07-30 WO PCT/JP2003/009646 patent/WO2004013841A1/en active IP Right Grant
- 2003-07-30 US US10/491,894 patent/US7058571B2/en not_active Expired - Lifetime
- 2003-07-30 CA CA2464408A patent/CA2464408C/en not_active Expired - Lifetime
- 2003-07-30 DE DE60304479T patent/DE60304479T2/de not_active Expired - Lifetime
- 2003-07-30 AU AU2003252727A patent/AU2003252727A1/en not_active Abandoned
- 2003-07-30 BR BR0305710-0A patent/BR0305710A/pt active IP Right Grant
- 2003-07-30 KR KR1020047006430A patent/KR100723753B1/ko active IP Right Grant
- 2003-07-30 CN CNB038014920A patent/CN1286087C/zh not_active Expired - Lifetime
- 2003-07-30 EP EP03766661A patent/EP1527442B1/en not_active Expired - Lifetime
- 2003-07-30 AT AT03766661T patent/ATE322735T1/de not_active IP Right Cessation
- 2003-07-30 BR BRPI0305710-0A patent/BRPI0305710B1/pt unknown
- 2003-07-31 TW TW092120991A patent/TWI303410B/zh not_active IP Right Cessation
-
2005
- 2005-08-16 HK HK05107079A patent/HK1073525A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
WO2004013841A1 (en) | 2004-02-12 |
CN1585972A (zh) | 2005-02-23 |
JP3646938B1 (ja) | 2005-05-11 |
EP1527442A1 (en) | 2005-05-04 |
DE60304479D1 (de) | 2006-05-18 |
US7058571B2 (en) | 2006-06-06 |
TWI303410B (en) | 2008-11-21 |
ES2261974T3 (es) | 2006-11-16 |
CA2464408C (en) | 2012-02-21 |
DE60304479T2 (de) | 2006-12-14 |
HK1073525A1 (en) | 2005-10-07 |
KR100723753B1 (ko) | 2007-05-30 |
BRPI0305710B1 (pt) | 2017-11-07 |
EP1527442B1 (en) | 2006-04-05 |
JP2005520217A (ja) | 2005-07-07 |
KR20050042020A (ko) | 2005-05-04 |
AU2003252727A8 (en) | 2004-02-23 |
CA2464408A1 (en) | 2004-02-12 |
CN1286087C (zh) | 2006-11-22 |
AU2003252727A1 (en) | 2004-02-23 |
ATE322735T1 (de) | 2006-04-15 |
US20050080621A1 (en) | 2005-04-14 |
TW200405267A (en) | 2004-04-01 |
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Legal Events
Date | Code | Title | Description |
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B25D | Requested change of name of applicant approved |
Owner name: NEC CORPORATION (JP) , PANASONIC CORPORATION (JP) Free format text: NOME ALTERADO DE: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
|
B09A | Decision: intention to grant [chapter 9.1 patent gazette] | ||
B16A | Patent or certificate of addition of invention granted [chapter 16.1 patent gazette] |
Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 07/11/2017, OBSERVADAS AS CONDICOES LEGAIS. |