MX2012004116A - Decodificador multimodo para señal de audio, codificador multimodo para señal de audio, metodo y programa de computacion que usan un modelado de ruido en base a linealidad-prediccion-codi ficacion. - Google Patents
Decodificador multimodo para señal de audio, codificador multimodo para señal de audio, metodo y programa de computacion que usan un modelado de ruido en base a linealidad-prediccion-codi ficacion.Info
- Publication number
- MX2012004116A MX2012004116A MX2012004116A MX2012004116A MX2012004116A MX 2012004116 A MX2012004116 A MX 2012004116A MX 2012004116 A MX2012004116 A MX 2012004116A MX 2012004116 A MX2012004116 A MX 2012004116A MX 2012004116 A MX2012004116 A MX 2012004116A
- Authority
- MX
- Mexico
- Prior art keywords
- audio signal
- audio content
- domain
- linear
- mode audio
- Prior art date
Links
- 230000005236 sound signal Effects 0.000 title abstract 6
- 238000007493 shaping process Methods 0.000 title abstract 3
- 238000004590 computer program Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 230000003595 spectral effect Effects 0.000 abstract 8
- 238000001228 spectrum Methods 0.000 abstract 1
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
- 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
- G10L19/04—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
- G10L19/16—Vocoder architecture
- G10L19/18—Vocoders using multiple modes
- G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based coding
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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
- G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
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)
Abstract
Un decodificador multimodo para señal de audio para proporcionar una representación decodificada de un contenido de audio sobre la base de una representación codificada del contenido de audio comprende un determinador de valores espectrales, configurado para obtener conjuntos de coeficientes espectrales decodificados para una pluralidad de porciones del contenido de audio. El decodificador para señal de audio también comprende un procesador espectral configurado para aplicar un modelado espectral a un conjunto de coeficientes espectrales, o a una versión pre-procesada del mismo, dependiendo de un conjunto de parámetros de dominio de predicción lineal para una porción del contenido de audio codificado en un modo de predicción lineal, y para aplicar un modelado espectral a un conjunto de coeficientes espectrales decodificados, o una versión pre-procesada del mismo, dependiendo de un conjunto de parámetros de factores de escala para una porción del contenido de audio codificado en un modo de dominio de frecuencia. El decodificador para señal de audio comprende un convertidor de dominio de frecuencia a dominio de tiempo configurado para obtener una representación de dominio de tiempo del contenido de audio sobre la base de un conjunto modelado espectralmente de coeficientes espectrales decodificados para una porción del contenido de audio codificado en el modo de predicción lineal, y para obtener una representación de dominio de tiempo del contenido de audio sobre la base de un conjunto modelado espectralmente de coeficientes espectrales decodificados para una porción del contenido de audio codificado en el modo de dominio de frecuencia.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US24977409P | 2009-10-08 | 2009-10-08 | |
| PCT/EP2010/064917 WO2011042464A1 (en) | 2009-10-08 | 2010-10-06 | Multi-mode audio signal decoder, multi-mode audio signal encoder, methods and computer program using a linear-prediction-coding based noise shaping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MX2012004116A true MX2012004116A (es) | 2012-05-22 |
Family
ID=43384656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX2012004116A MX2012004116A (es) | 2009-10-08 | 2010-10-06 | Decodificador multimodo para señal de audio, codificador multimodo para señal de audio, metodo y programa de computacion que usan un modelado de ruido en base a linealidad-prediccion-codi ficacion. |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US8744863B2 (es) |
| EP (1) | EP2471061B1 (es) |
| JP (1) | JP5678071B2 (es) |
| KR (1) | KR101425290B1 (es) |
| CN (1) | CN102648494B (es) |
| AR (1) | AR078573A1 (es) |
| AU (1) | AU2010305383B2 (es) |
| BR (2) | BR122021023896B1 (es) |
| CA (1) | CA2777073C (es) |
| ES (1) | ES2441069T3 (es) |
| MX (1) | MX2012004116A (es) |
| MY (1) | MY163358A (es) |
| PL (1) | PL2471061T3 (es) |
| RU (1) | RU2591661C2 (es) |
| TW (1) | TWI423252B (es) |
| WO (1) | WO2011042464A1 (es) |
| ZA (1) | ZA201203231B (es) |
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