BR112012017257A2 - "codificador de áudio, codificados de áudio, método de codificação de uma informação de audio método de codificação de uma informação de áudio de programa de computador que utiliza uma modificação de uma representção numérica de um valor de contexto prévio numérico" - Google Patents
"codificador de áudio, codificados de áudio, método de codificação de uma informação de audio método de codificação de uma informação de áudio de programa de computador que utiliza uma modificação de uma representção numérica de um valor de contexto prévio numérico"Info
- Publication number
- BR112012017257A2 BR112012017257A2 BR112012017257A BR112012017257A BR112012017257A2 BR 112012017257 A2 BR112012017257 A2 BR 112012017257A2 BR 112012017257 A BR112012017257 A BR 112012017257A BR 112012017257 A BR112012017257 A BR 112012017257A BR 112012017257 A2 BR112012017257 A2 BR 112012017257A2
- Authority
- BR
- Brazil
- Prior art keywords
- audio
- audio information
- coding
- decoded
- modification
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 4
- 238000004590 computer program Methods 0.000 title abstract 2
- 238000012986 modification Methods 0.000 title abstract 2
- 230000004048 modification Effects 0.000 title abstract 2
- 230000003595 spectral effect Effects 0.000 abstract 4
Classifications
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- 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
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- 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
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- 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
- G10L19/0017—Lossless audio signal coding; Perfect reconstruction of coded audio signal by transmission of coding error
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- 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
- G10L19/002—Dynamic bit allocation
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- 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
- G10L19/0204—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 using subband decomposition
- G10L19/0208—Subband vocoders
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- 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
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- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Error Detection And Correction (AREA)
Abstract
CODIFICADOR DE ÁUDIO, DECODIFICADOR DE ÁUDIO, MÉTODO DE CODIFICAÇÃO DE UMA INFORMAÇÃO DE ÁUDIO, MÉTODO DE DECODIFICAÇÃO DE UMA INFORMAÇÃO DE ÁUDIO E PROGRAMA DE COMPUTADOR QUE UTILIZA UMA MODIFICAÇÃO DE UMA REPRESENTAÇÃO NUMÉRICA DE UM VALOR DE CONTEXTO PRÉVIO NUMÉRICO. Um decodificador de áudio para prover uma informação de áudio decodificada com base em uma informação de áudio codificada compreende um decodificador aritmético para prover diversos valores espectrais decodificados com base em uma representação aritrneticamente codificada dos valores espectrais e um conversor de domínio de frequência em domínio de tempo para prover uma representação de áudio de domínio de tempo utilizando os valores espectrais decodificados, para obter a informação de áudio decodificada. corrente numérico que descreve um estado de contexto associado a um ou mais valores espectrais a serem decodificados. Um codificador de áudio utiliza um conceito semelhante.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US29435710P | 2010-01-12 | 2010-01-12 | |
PCT/EP2011/050273 WO2011086066A1 (en) | 2010-01-12 | 2011-01-11 | Audio encoder, audio decoder, method for encoding and audio information, method for decoding an audio information and computer program using a modification of a number representation of a numeric previous context value |
Publications (1)
Publication Number | Publication Date |
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BR112012017257A2 true BR112012017257A2 (pt) | 2017-10-03 |
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BR122021008581-1A BR122021008581B1 (pt) | 2010-01-12 | 2011-01-11 | Codificador de áudio, decodificador de áudio, método de codificação e informação de áudio, e método de decodificação de uma informação de áudio que utiliza uma tabela hash que descreve tanto valores de estado significativos como limites de intervalo |
BR112012017258-1A BR112012017258B1 (pt) | 2010-01-12 | 2011-01-11 | codificador de áudio, decodificador de áudio, método de codificação e decodificação de uma informação de áudio, para obtenção de um valor de sub-região de contexto com base em uma norma de valores espectrais previamente decodificados |
BR112012017257A BR112012017257A2 (pt) | 2010-01-12 | 2011-01-11 | "codificador de áudio, codificados de áudio, método de codificação de uma informação de audio método de codificação de uma informação de áudio de programa de computador que utiliza uma modificação de uma representção numérica de um valor de contexto prévio numérico" |
BR112012017256-5A BR112012017256B1 (pt) | 2010-01-12 | 2011-01-11 | Codificador de áudio, decodificador de áudio, método de codificação e informação de áudio e método de decodificação de uma informação de áudio que utiliza uma tabela hash que descreve tanto valores de estado significativos como limites de intervalo |
BR122021008583-8A BR122021008583B1 (pt) | 2010-01-12 | 2011-01-11 | Codificador de áudio, decodificador de áudio, método de codificação e informação de áudio, e método de decodificação de uma informação de áudio que utiliza uma tabela hash que descreve tanto valores de estado significativos como limites de intervalo |
BR122021008576-5A BR122021008576B1 (pt) | 2010-01-12 | 2011-01-11 | Codificador de áudio, decodificador de áudio, método de codificação e informação de áudio, e método de decodificação de uma informação de áudio que utiliza uma tabela hash que descreve tanto valores de estado significativos como limites de intervalo |
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BR122021008581-1A BR122021008581B1 (pt) | 2010-01-12 | 2011-01-11 | Codificador de áudio, decodificador de áudio, método de codificação e informação de áudio, e método de decodificação de uma informação de áudio que utiliza uma tabela hash que descreve tanto valores de estado significativos como limites de intervalo |
BR112012017258-1A BR112012017258B1 (pt) | 2010-01-12 | 2011-01-11 | codificador de áudio, decodificador de áudio, método de codificação e decodificação de uma informação de áudio, para obtenção de um valor de sub-região de contexto com base em uma norma de valores espectrais previamente decodificados |
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BR112012017256-5A BR112012017256B1 (pt) | 2010-01-12 | 2011-01-11 | Codificador de áudio, decodificador de áudio, método de codificação e informação de áudio e método de decodificação de uma informação de áudio que utiliza uma tabela hash que descreve tanto valores de estado significativos como limites de intervalo |
BR122021008583-8A BR122021008583B1 (pt) | 2010-01-12 | 2011-01-11 | Codificador de áudio, decodificador de áudio, método de codificação e informação de áudio, e método de decodificação de uma informação de áudio que utiliza uma tabela hash que descreve tanto valores de estado significativos como limites de intervalo |
BR122021008576-5A BR122021008576B1 (pt) | 2010-01-12 | 2011-01-11 | Codificador de áudio, decodificador de áudio, método de codificação e informação de áudio, e método de decodificação de uma informação de áudio que utiliza uma tabela hash que descreve tanto valores de estado significativos como limites de intervalo |
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BR (6) | BR122021008581B1 (pt) |
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TW (3) | TWI466103B (pt) |
WO (3) | WO2011086065A1 (pt) |
ZA (3) | ZA201205936B (pt) |
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