BRPI0506623A - codificação de áudio - Google Patents
codificação de áudioInfo
- Publication number
- BRPI0506623A BRPI0506623A BRPI0506623-9A BRPI0506623A BRPI0506623A BR PI0506623 A BRPI0506623 A BR PI0506623A BR PI0506623 A BRPI0506623 A BR PI0506623A BR PI0506623 A BRPI0506623 A BR PI0506623A
- Authority
- BR
- Brazil
- Prior art keywords
- amplification value
- interpolation
- limit
- power limit
- decoder side
- Prior art date
Links
- 230000003321 amplification Effects 0.000 abstract 3
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 3
- 238000001914 filtration Methods 0.000 abstract 2
- 230000000873 masking effect Effects 0.000 abstract 2
- 238000013139 quantization 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
-
- 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
- G10L19/02—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
- G10L19/032—Quantisation or dequantisation of spectral components
-
- 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
- G10L19/26—Pre-filtering or post-filtering
- G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
-
- 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)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Computational Linguistics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Theoretical Computer Science (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Cereal-Derived Products (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Abstract
CODIFICAçãO DE áUDIO A idéia central da presente invenção é que, a técnica anterior, a saber, a interpolação relativa dos coeficientes de filtro e do valor de amplificação, para a obtenção de valores interpolados dos valores de áudio intermediários iniciando a partir dos nodos deve ser descartada. Pode ser obtida uma codificação contendo menos problemas audíveis com a não interpolação do valor de amplificação, mas ao invés disso, tomando o limite de potênciaderivado do limite de mascaramento, de preferência como a área abaixo do quadrado da magnitude do limite de mascaramento, para cada nodo, isto é, para cada parametrização a ser transferida, e então realizae a interpolação entre esses limites de potência dos nodos vizinhos, como, por exemplo, uma interpolação linear. Tanto no lado do codificador como no lado do decodificador, poderá então ser calculado um valor de amplificação a partir do limite de potência intermediário determinado de maneira que o ruído de quantização provocado pela quantização que tem uma freüência constante antes da pós-filtragem no lado decodificador, está abaixo do limite de potência ou corresponde a este após a pós-filtragem.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004007200A DE102004007200B3 (de) | 2004-02-13 | 2004-02-13 | Audiocodierung |
| PCT/EP2005/001350 WO2005078704A1 (de) | 2004-02-13 | 2005-02-10 | Audiocodierung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| BRPI0506623A true BRPI0506623A (pt) | 2007-05-02 |
| BRPI0506623B1 BRPI0506623B1 (pt) | 2018-12-18 |
Family
ID=34745238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BRPI0506623A BRPI0506623B1 (pt) | 2004-02-13 | 2005-02-10 | codificação de áudio |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US7729903B2 (pt) |
| EP (1) | EP1687808B1 (pt) |
| JP (1) | JP4444296B2 (pt) |
| KR (1) | KR100814673B1 (pt) |
| CN (1) | CN1918632B (pt) |
| AT (1) | ATE383641T1 (pt) |
| AU (1) | AU2005213768B2 (pt) |
| BR (1) | BRPI0506623B1 (pt) |
| CA (1) | CA2556099C (pt) |
| DE (2) | DE102004007200B3 (pt) |
| ES (1) | ES2300975T3 (pt) |
| IL (1) | IL176857A0 (pt) |
| NO (1) | NO338918B1 (pt) |
| RU (1) | RU2335809C2 (pt) |
| WO (1) | WO2005078704A1 (pt) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004009955B3 (de) | 2004-03-01 | 2005-08-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zum Ermitteln einer Quantisierer-Schrittweite |
| DE102006022346B4 (de) * | 2006-05-12 | 2008-02-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Informationssignalcodierung |
| KR101346771B1 (ko) * | 2007-08-16 | 2013-12-31 | 삼성전자주식회사 | 심리 음향 모델에 따른 마스킹 값보다 작은 정현파 신호를효율적으로 인코딩하는 방법 및 장치, 그리고 인코딩된오디오 신호를 디코딩하는 방법 및 장치 |
| EP2301019B1 (en) | 2008-07-11 | 2017-10-04 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio encoder and audio decoder |
| MX2011000382A (es) | 2008-07-11 | 2011-02-25 | Fraunhofer Ges Forschung | Codificador de audio, decodificador de audio, metodos para la codificacion y decodificacion de audio; transmision de audio y programa de computacion. |
| PT2491553T (pt) | 2009-10-20 | 2017-01-20 | Fraunhofer Ges Forschung | Codificador de áudio, descodificador de áudio, método para codificar uma informação de áudio, método para descodificar uma informação de áudio e programa de computador que utiliza uma redução iterativa de tamanho de intervalo |
| MX2012008075A (es) * | 2010-01-12 | 2013-12-16 | Fraunhofer Ges Forschung | Codificador de audio, decodificador de audio, metodo para codificar e informacion de audio, metodo para decodificar una informacion de audio y programa de computacion utilizando una modificacion de una representacion de un numero de un valor de contexto numerico previo. |
| PT3239978T (pt) | 2011-02-14 | 2019-04-02 | Fraunhofer Ges Forschung | Codificação e descodificação de posições de pulso de faixas de um sinal de áudio |
| PT2676270T (pt) | 2011-02-14 | 2017-05-02 | Fraunhofer Ges Forschung | Codificação de uma parte de um sinal de áudio utilizando uma deteção de transiente e um resultado de qualidade |
| 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 |
| KR101424372B1 (ko) * | 2011-02-14 | 2014-08-01 | 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. | 랩핑 변환을 이용한 정보 신호 표현 |
| AR085794A1 (es) | 2011-02-14 | 2013-10-30 | Fraunhofer Ges Forschung | Prediccion lineal basada en esquema de codificacion utilizando conformacion de ruido de dominio espectral |
| PL2676268T3 (pl) | 2011-02-14 | 2015-05-29 | Fraunhofer Ges Forschung | Urządzenie i sposób przetwarzania zdekodowanego sygnału audio w domenie widmowej |
| BR112015018021B1 (pt) | 2013-01-29 | 2022-10-11 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V | Aparelho e método para selecionar um dentre um primeiro algoritmo de codificação e um segundo algoritmo de codificação |
| US9060223B2 (en) | 2013-03-07 | 2015-06-16 | Aphex, Llc | Method and circuitry for processing audio signals |
| ES2688134T3 (es) | 2013-04-05 | 2018-10-31 | Dolby International Ab | Codificador y decodificador de audio para codificación de forma de onda intercalada |
| EP2830061A1 (en) | 2013-07-22 | 2015-01-28 | Fraunhofer Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for encoding and decoding an encoded audio signal using temporal noise/patch shaping |
| US9277421B1 (en) * | 2013-12-03 | 2016-03-01 | Marvell International Ltd. | System and method for estimating noise in a wireless signal using order statistics in the time domain |
| CN106409303B (zh) | 2014-04-29 | 2019-09-20 | 华为技术有限公司 | 处理信号的方法及设备 |
| MX356371B (es) | 2014-07-25 | 2018-05-25 | Fraunhofer Ges Forschung | Dispositivo de codificacion de señal acustica, dispositivo de decodificacion de señal acustica, metodo para codificar una señal acustica y metodo para decodificar una señal acustica. |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3820038A1 (de) | 1988-06-13 | 1989-12-14 | Ant Nachrichtentech | Verfahren zur aufbereitung und uebertragung einer bildsequenz |
| DE3820037A1 (de) | 1988-06-13 | 1989-12-14 | Ant Nachrichtentech | Bildcodierverfahren und einrichtung |
| US5581653A (en) * | 1993-08-31 | 1996-12-03 | Dolby Laboratories Licensing Corporation | Low bit-rate high-resolution spectral envelope coding for audio encoder and decoder |
| KR970005131B1 (ko) * | 1994-01-18 | 1997-04-12 | 대우전자 주식회사 | 인간의 청각특성에 적응적인 디지탈 오디오 부호화장치 |
| DE19537338C2 (de) * | 1995-10-06 | 2003-05-22 | Fraunhofer Ges Forschung | Verfahren und Vorrichtung zum Codieren von Audiosignalen |
| US5819215A (en) * | 1995-10-13 | 1998-10-06 | Dobson; Kurt | Method and apparatus for wavelet based data compression having adaptive bit rate control for compression of digital audio or other sensory data |
| GB2307833B (en) * | 1995-12-01 | 2000-06-07 | Geco As | A data compression method and apparatus for seismic data |
| WO1998001848A1 (en) | 1996-07-05 | 1998-01-15 | The Victoria University Of Manchester | Speech synthesis system |
| US6370477B1 (en) * | 1996-11-22 | 2002-04-09 | Schlumberger Technology Corporation | Compression method and apparatus for seismic data |
| EP0878790A1 (en) * | 1997-05-15 | 1998-11-18 | Hewlett-Packard Company | Voice coding system and method |
| JP4843142B2 (ja) | 1999-04-16 | 2011-12-21 | ドルビー・ラボラトリーズ・ライセンシング・コーポレーション | 音声符号化のための利得−適応性量子化及び不均一符号長の使用 |
| US6775587B1 (en) | 1999-10-30 | 2004-08-10 | Stmicroelectronics Asia Pacific Pte Ltd. | Method of encoding frequency coefficients in an AC-3 encoder |
| US7110953B1 (en) * | 2000-06-02 | 2006-09-19 | Agere Systems Inc. | Perceptual coding of audio signals using separated irrelevancy reduction and redundancy reduction |
| CN1266673C (zh) * | 2002-03-12 | 2006-07-26 | 诺基亚有限公司 | 可伸缩音频编码的有效改进 |
| DE10217297A1 (de) * | 2002-04-18 | 2003-11-06 | Fraunhofer Ges Forschung | Vorrichtung und Verfahren zum Codieren eines zeitdiskreten Audiosignals und Vorrichtung und Verfahren zum Decodieren von codierten Audiodaten |
| CA2388352A1 (en) * | 2002-05-31 | 2003-11-30 | Voiceage Corporation | A method and device for frequency-selective pitch enhancement of synthesized speed |
| US7620545B2 (en) * | 2003-07-08 | 2009-11-17 | Industrial Technology Research Institute | Scale factor based bit shifting in fine granularity scalability audio coding |
| KR100636145B1 (ko) * | 2004-06-04 | 2006-10-18 | 삼성전자주식회사 | 확장된 고해상도 오디오 신호 부호화 및 복호화 장치 |
| JP2007099007A (ja) * | 2005-09-30 | 2007-04-19 | Auto Network Gijutsu Kenkyusho:Kk | ワイヤハーネスの配索構造 |
-
2004
- 2004-02-13 DE DE102004007200A patent/DE102004007200B3/de not_active Expired - Lifetime
-
2005
- 2005-02-10 WO PCT/EP2005/001350 patent/WO2005078704A1/de active IP Right Grant
- 2005-02-10 AU AU2005213768A patent/AU2005213768B2/en active Active
- 2005-02-10 KR KR1020067015854A patent/KR100814673B1/ko active IP Right Grant
- 2005-02-10 EP EP05701396A patent/EP1687808B1/de active Active
- 2005-02-10 RU RU2006132734/09A patent/RU2335809C2/ru active
- 2005-02-10 BR BRPI0506623A patent/BRPI0506623B1/pt active IP Right Grant
- 2005-02-10 CA CA2556099A patent/CA2556099C/en active Active
- 2005-02-10 JP JP2006552547A patent/JP4444296B2/ja active Active
- 2005-02-10 DE DE502005002489T patent/DE502005002489D1/de active Active
- 2005-02-10 AT AT05701396T patent/ATE383641T1/de active
- 2005-02-10 ES ES05701396T patent/ES2300975T3/es active Active
- 2005-02-10 CN CN2005800047543A patent/CN1918632B/zh active Active
-
2006
- 2006-07-13 IL IL176857A patent/IL176857A0/en active IP Right Grant
- 2006-07-27 US US11/460,425 patent/US7729903B2/en active Active
- 2006-09-12 NO NO20064093A patent/NO338918B1/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007522510A (ja) | 2007-08-09 |
| CA2556099C (en) | 2010-06-01 |
| KR20060113998A (ko) | 2006-11-03 |
| BRPI0506623B1 (pt) | 2018-12-18 |
| NO338918B1 (no) | 2016-10-31 |
| ATE383641T1 (de) | 2008-01-15 |
| RU2006132734A (ru) | 2008-03-20 |
| KR100814673B1 (ko) | 2008-03-18 |
| DE102004007200B3 (de) | 2005-08-11 |
| DE502005002489D1 (de) | 2008-02-21 |
| CN1918632A (zh) | 2007-02-21 |
| AU2005213768A1 (en) | 2005-08-25 |
| AU2005213768B2 (en) | 2009-11-19 |
| US7729903B2 (en) | 2010-06-01 |
| RU2335809C2 (ru) | 2008-10-10 |
| NO20064093L (no) | 2006-10-26 |
| EP1687808A1 (de) | 2006-08-09 |
| CA2556099A1 (en) | 2005-08-25 |
| IL176857A0 (en) | 2006-10-31 |
| JP4444296B2 (ja) | 2010-03-31 |
| ES2300975T3 (es) | 2008-06-16 |
| WO2005078704A1 (de) | 2005-08-25 |
| US20070016403A1 (en) | 2007-01-18 |
| CN1918632B (zh) | 2010-05-05 |
| EP1687808B1 (de) | 2008-01-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B15K | Others concerning applications: alteration of classification |
Ipc: G10L 19/032 (2013.01), G10L 19/26 (2013.01) |
|
| B06T | Formal requirements before examination [chapter 6.20 patent gazette] | ||
| B06A | Patent application procedure suspended [chapter 6.1 patent gazette] | ||
| 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 18/12/2018, OBSERVADAS AS CONDICOES LEGAIS. |