AR078705A1 - Codificador de audio, decodificador de audio, metodo para codificadar informacion de audio, metodo para decodificar informacion de audio y programa de computacion que usa la deteccion de un grupo de valores espectrales previamente decodificados - Google Patents
Codificador de audio, decodificador de audio, metodo para codificadar informacion de audio, metodo para decodificar informacion de audio y programa de computacion que usa la deteccion de un grupo de valores espectrales previamente decodificadosInfo
- Publication number
- AR078705A1 AR078705A1 ARP100103832A ARP100103832A AR078705A1 AR 078705 A1 AR078705 A1 AR 078705A1 AR P100103832 A ARP100103832 A AR P100103832A AR P100103832 A ARP100103832 A AR P100103832A AR 078705 A1 AR078705 A1 AR 078705A1
- Authority
- AR
- Argentina
- Prior art keywords
- audio
- spectral values
- audio information
- coding
- decoder
- Prior art date
Links
Classifications
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- 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
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- 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
- G10L19/0017—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 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
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
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- 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
- 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
Abstract
Un decodificador de audio para proveer una informacion de audio decodificada sobre la base de una informacion de audio codificada comprende un decodificador aritmético para proveer una pluralidad de valores espectrales decodificados sobre la base de una representacion aritméticamente codificada de los valores espectrales y un convertidor de dominio frecuencial a dominio temporal para proveer una representacion de audio de dominio temporal que utiliza los valores espectrales decodificados, para obtener la informacion de audio decodificada. El decodificador aritmético tiene una configuracion que le permite seleccionar una norma de mapeo que describe un mapeo de un valor de codigo a un codigo de símbolos de manera dependiente de un estado contextual. El decodificador aritmético tiene una configuracion que le permite determinar o modificar el estado contextual actual de manera dependiente de una pluralidad de valores espectrales previamente decodificados. El decodificador aritmético tiene una configuracion que le permite detectar un grupo de una pluralidad de valores espectrales previamente decodificados que satisfacen, considerados individualmente o en conjunto, una condicion predeterminada relacionada con sus magnitudes, y determinar el estado contextual actual de manera dependiente de un resultado obtenido con la deteccion. Un codificador de audio utiliza principios similares.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US25345909P | 2009-10-20 | 2009-10-20 |
Publications (1)
Publication Number | Publication Date |
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AR078705A1 true AR078705A1 (es) | 2011-11-30 |
Family
ID=43259832
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
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ARP100103832A AR078705A1 (es) | 2009-10-20 | 2010-10-20 | Codificador de audio, decodificador de audio, metodo para codificadar informacion de audio, metodo para decodificar informacion de audio y programa de computacion que usa la deteccion de un grupo de valores espectrales previamente decodificados |
ARP100103834A AR078707A1 (es) | 2009-10-20 | 2010-10-20 | Codificador de audio, decodificador de audio, metodo para codificar informacion de audio y programa de computacion que utiliza una reduccion de tamano de intervalo interactiva |
ARP100103833A AR078706A1 (es) | 2009-10-20 | 2010-10-20 | Codificador de audio, decodificador de audio, metodo para codificar informacion de audio, metodo para decodificar informacion de audio y programa de computacion que usa una regla dependiente de la region para un mapeado mediante codificacion aritmetica |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ARP100103834A AR078707A1 (es) | 2009-10-20 | 2010-10-20 | Codificador de audio, decodificador de audio, metodo para codificar informacion de audio y programa de computacion que utiliza una reduccion de tamano de intervalo interactiva |
ARP100103833A AR078706A1 (es) | 2009-10-20 | 2010-10-20 | Codificador de audio, decodificador de audio, metodo para codificar informacion de audio, metodo para decodificar informacion de audio y programa de computacion que usa una regla dependiente de la region para un mapeado mediante codificacion aritmetica |
Country Status (19)
Country | Link |
---|---|
US (6) | US8706510B2 (es) |
EP (3) | EP2491552B1 (es) |
JP (3) | JP5589084B2 (es) |
KR (3) | KR101419148B1 (es) |
CN (3) | CN102667923B (es) |
AR (3) | AR078705A1 (es) |
AU (1) | AU2010309820B2 (es) |
BR (6) | BR112012009445B1 (es) |
CA (4) | CA2778325C (es) |
ES (3) | ES2610163T3 (es) |
HK (2) | HK1175289A1 (es) |
MX (3) | MX2012004572A (es) |
MY (3) | MY188408A (es) |
PL (3) | PL2491552T3 (es) |
PT (1) | PT2491553T (es) |
RU (3) | RU2596596C2 (es) |
TW (3) | TWI430262B (es) |
WO (3) | WO2011048098A1 (es) |
ZA (3) | ZA201203610B (es) |
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