MX342822B - Prediccion basada en modelo en un banco de filtros de muestreo critico. - Google Patents
Prediccion basada en modelo en un banco de filtros de muestreo critico.Info
- Publication number
- MX342822B MX342822B MX2015008659A MX2015008659A MX342822B MX 342822 B MX342822 B MX 342822B MX 2015008659 A MX2015008659 A MX 2015008659A MX 2015008659 A MX2015008659 A MX 2015008659A MX 342822 B MX342822 B MX 342822B
- Authority
- MX
- Mexico
- Prior art keywords
- signal
- subband
- sample
- filterbank
- model based
- Prior art date
Links
- 230000005236 sound signal Effects 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 2
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- 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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- 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
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- 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
- G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
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- 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
- G10L19/0212—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 orthogonal transformation
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- G—PHYSICS
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- 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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- 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
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
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- 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
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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
- G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
- G10L19/093—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters using sinusoidal excitation models
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
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- 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
- G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
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- 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
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
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- 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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/08—Probabilistic or stochastic CAD
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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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
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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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
- G10L21/0388—Details of processing therefor
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Acoustics & Sound (AREA)
- Human Computer Interaction (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Health & Medical Sciences (AREA)
- Computational Linguistics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Evolutionary Computation (AREA)
- Quality & Reliability (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Measurement Of Radiation (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Design And Manufacture Of Integrated Circuits (AREA)
Abstract
En el presente documento se refiere a sistemas codificadores de fuente de audio. En particular, en el presente documento se refiere a sistemas codificadores de fuente de audio que hacen uso de predicción lineal en combinación con un banco de filtros. Se describe un método para estimar una primera muestra (615) de una primera señal de sub-banda en una primera sub-banda de una señal de audio. La primera señal de sub-banda de la señal de audio se determina utilizando un banco de filtros de análisis (612) que comprende una pluralidad de filtros de análisis que proporcionan una pluralidad de señales de sub-banda en una pluralidad de sub-bandas de la señal de audio, respectivamente. El método comprende determinar un parámetro de modelo (613) de un modelo de señal; determinar un coeficiente de predicción que se va aplicar a una muestra anterior (614) de una primera señal de sub-banda decodificada de la primera señal de sub-banda, con b ase en el modelo de señal, con base en el parámetro de modelo (613) y con base en el banco de filtros de análisis (612); en donde un intervalo de tiempo de la muestra anterior (614) está antes que un intervalo de tiempo de la primera muestra (615); y determinar una estimación de la primera muestra (615) al aplicar el coeficiente de predicción a la muestra anterior (614).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201361750052P | 2013-01-08 | 2013-01-08 | |
US201361875528P | 2013-09-09 | 2013-09-09 | |
PCT/EP2014/050139 WO2014108393A1 (en) | 2013-01-08 | 2014-01-07 | Model based prediction in a critically sampled filterbank |
Publications (2)
Publication Number | Publication Date |
---|---|
MX2015008659A MX2015008659A (es) | 2015-10-12 |
MX342822B true MX342822B (es) | 2016-10-13 |
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Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
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MX2016013420A MX362990B (es) | 2013-01-08 | 2014-01-07 | Prediccion basada en modelo en un banco de filtros de muestreo critico. |
MX2015008659A MX342822B (es) | 2013-01-08 | 2014-01-07 | Prediccion basada en modelo en un banco de filtros de muestreo critico. |
MX2019002421A MX370086B (es) | 2013-01-08 | 2014-01-07 | Prediccion basada en modelo en un banco de filtros de muestreo critico. |
MX2022013536A MX2022013536A (es) | 2013-01-08 | 2015-07-02 | Prediccion basada en modelo en un banco de filtros de muestreo critico. |
MX2019014295A MX2019014295A (es) | 2013-01-08 | 2015-07-02 | Prediccion basada en modelo en un banco de filtros de muestreo critico. |
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MX2016013420A MX362990B (es) | 2013-01-08 | 2014-01-07 | Prediccion basada en modelo en un banco de filtros de muestreo critico. |
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Application Number | Title | Priority Date | Filing Date |
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MX2019002421A MX370086B (es) | 2013-01-08 | 2014-01-07 | Prediccion basada en modelo en un banco de filtros de muestreo critico. |
MX2022013536A MX2022013536A (es) | 2013-01-08 | 2015-07-02 | Prediccion basada en modelo en un banco de filtros de muestreo critico. |
MX2019014295A MX2019014295A (es) | 2013-01-08 | 2015-07-02 | Prediccion basada en modelo en un banco de filtros de muestreo critico. |
Country Status (20)
Country | Link |
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US (9) | US9659567B2 (es) |
EP (5) | EP3176784B1 (es) |
JP (7) | JP6173484B2 (es) |
KR (1) | KR101634979B1 (es) |
CN (2) | CN104919523B (es) |
AU (7) | AU2014204954B2 (es) |
BR (2) | BR122017000308B1 (es) |
CA (8) | CA3121651C (es) |
DK (1) | DK2943953T3 (es) |
ES (3) | ES2769845T3 (es) |
HK (1) | HK1213081A1 (es) |
HU (1) | HUE032831T2 (es) |
IL (10) | IL302061B2 (es) |
IN (1) | IN2015MN01874A (es) |
MX (5) | MX362990B (es) |
MY (2) | MY193865A (es) |
PL (1) | PL2943953T3 (es) |
RU (2) | RU2636093C2 (es) |
SG (2) | SG10201709631PA (es) |
WO (1) | WO2014108393A1 (es) |
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