AR079888A1 - Codificador de audio, decodificador de audio, metodo para codificar y decodificar una informacion de audio y programa de computacion que obtiene un valor de contexto de sub- region basado en una norma de valores espectrales previamente decodificados - Google Patents
Codificador de audio, decodificador de audio, metodo para codificar y decodificar una informacion de audio y programa de computacion que obtiene un valor de contexto de sub- region basado en una norma de valores espectrales previamente decodificadosInfo
- Publication number
- AR079888A1 AR079888A1 ARP110100097A ARP110100097A AR079888A1 AR 079888 A1 AR079888 A1 AR 079888A1 AR P110100097 A ARP110100097 A AR P110100097A AR P110100097 A ARP110100097 A AR P110100097A AR 079888 A1 AR079888 A1 AR 079888A1
- Authority
- AR
- Argentina
- Prior art keywords
- spectral values
- audio
- previously decoded
- arithmetic decoder
- context
- Prior art date
Links
- 230000003595 spectral effect Effects 0.000 title abstract 9
- 238000004590 computer program Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 238000013507 mapping Methods 0.000 abstract 2
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
Un decodificador de audio para la provision de una informacion de audio decodificada sobre la base de una informacion de audio codificada comprende un decodificador aritmético para la provision de una pluralidad de valores espectrales decodificados sobre la base de una representacion aritméticamente codificada de los valores espectrales y un convertidor del dominio de la frecuencia al dominio del tiempo para la provision de una representacion de audio en el dominio del tiempo utilizando los valores espectrales, para obtener la informacion de audio decodificada. El decodificador aritmético está configurado para seleccionar una regla de mapeo que describe un mapeo de un valor de codigo sobre un codigo de símbolo dependiendo de un estado del contexto descripto por un valor numérico de contexto actual. El decodificador aritmético está configurado para determinar el valor numérico de contexto actual dependiendo de una pluralidad de valores espectrales previamente decodificados. El decodificador aritmético está configurado para obtener una pluralidad de valores de subregion de contexto sobre la base de valores espectrales previamente decodificados y para almacenar dichos valores de subregion de contexto. El decodificador aritmético está configurado para derivar un valor numérico de contexto actual asociado a uno o más valores espectrales a decodificar dependiendo de los valores de subregion de contexto almacenados. El decodificador aritmético está configurado para computar la norma de un vector formado por una pluralidad de valores espectrales previamente decodificados para obtener un valor comun de subregion de contexto asociado a la pluralidad de valores espectrales previamente decodificados. Un codificador de audio utiliza un concepto similar.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US29435710P | 2010-01-12 | 2010-01-12 |
Publications (1)
Publication Number | Publication Date |
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AR079888A1 true AR079888A1 (es) | 2012-02-29 |
Family
ID=43617872
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ARP110100095A AR079886A1 (es) | 2010-01-12 | 2011-01-12 | Codificador de audio, metodo para codificar e informacion de audio, metodo para decodificar una informacion de audio y programa de computacion que utiliza una tabla hash que describe tanto valores de estado significativos como limites de intervalo |
ARP110100096A AR079887A1 (es) | 2010-01-12 | 2011-01-12 | 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 |
ARP110100097A AR079888A1 (es) | 2010-01-12 | 2011-01-12 | Codificador de audio, decodificador de audio, metodo para codificar y decodificar una informacion de audio y programa de computacion que obtiene un valor de contexto de sub- region basado en una norma de valores espectrales previamente decodificados |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ARP110100095A AR079886A1 (es) | 2010-01-12 | 2011-01-12 | Codificador de audio, metodo para codificar e informacion de audio, metodo para decodificar una informacion de audio y programa de computacion que utiliza una tabla hash que describe tanto valores de estado significativos como limites de intervalo |
ARP110100096A AR079887A1 (es) | 2010-01-12 | 2011-01-12 | 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 |
Country Status (20)
Country | Link |
---|---|
US (4) | US8898068B2 (es) |
EP (3) | EP2524372B1 (es) |
JP (3) | JP5622865B2 (es) |
KR (3) | KR101336051B1 (es) |
CN (3) | CN102792370B (es) |
AR (3) | AR079886A1 (es) |
AU (3) | AU2011206676B2 (es) |
BR (6) | BR122021008576B1 (es) |
CA (3) | CA2786944C (es) |
ES (3) | ES2615891T3 (es) |
HK (2) | HK1178306A1 (es) |
MX (3) | MX2012008075A (es) |
MY (3) | MY160067A (es) |
PL (3) | PL2524372T3 (es) |
PT (1) | PT2524371T (es) |
RU (2) | RU2628162C2 (es) |
SG (3) | SG182464A1 (es) |
TW (3) | TWI466103B (es) |
WO (3) | WO2011086066A1 (es) |
ZA (3) | ZA201205936B (es) |
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- 2011-01-11 SG SG2012051074A patent/SG182466A1/en unknown
- 2011-01-11 MX MX2012008077A patent/MX2012008077A/es active IP Right Grant
- 2011-01-12 AR ARP110100095A patent/AR079886A1/es active IP Right Grant
- 2011-01-12 AR ARP110100096A patent/AR079887A1/es active IP Right Grant
- 2011-01-12 AR ARP110100097A patent/AR079888A1/es active IP Right Grant
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2012
- 2012-07-12 US US13/547,664 patent/US8898068B2/en active Active
- 2012-07-12 US US13/547,600 patent/US8645145B2/en active Active
- 2012-07-12 US US13/547,640 patent/US8682681B2/en active Active
- 2012-08-07 ZA ZA2012/05936A patent/ZA201205936B/en unknown
- 2012-08-07 ZA ZA2012/05939A patent/ZA201205939B/en unknown
- 2012-08-07 ZA ZA2012/05938A patent/ZA201205938B/en unknown
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2013
- 2013-04-26 HK HK13105056.5A patent/HK1178306A1/xx unknown
- 2013-05-08 HK HK13105504.3A patent/HK1177649A1/xx unknown
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2014
- 2014-09-19 US US14/491,881 patent/US9633664B2/en active Active
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