AR072481A1 - Un aparato y un metodo para decodificar una senal de audio codificada - Google Patents
Un aparato y un metodo para decodificar una senal de audio codificadaInfo
- Publication number
- AR072481A1 AR072481A1 ARP090102547A ARP090102547A AR072481A1 AR 072481 A1 AR072481 A1 AR 072481A1 AR P090102547 A ARP090102547 A AR P090102547A AR P090102547 A ARP090102547 A AR P090102547A AR 072481 A1 AR072481 A1 AR 072481A1
- Authority
- AR
- Argentina
- Prior art keywords
- algorithm
- decoding
- encoded
- signal
- audio signal
- Prior art date
Links
- 230000005236 sound signal Effects 0.000 title abstract 3
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
- G10L19/04—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
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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
-
- 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
-
- 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
-
- 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
-
- 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
- G10L21/04—Time compression or expansion
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
-
- 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
- G10L19/008—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 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
- G10L19/0212—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
-
- 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)
- Health & Medical Sciences (AREA)
- Signal Processing (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Computational Linguistics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Quality & Reliability (AREA)
- Theoretical Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
Un aparato para decodificar (100) una senal de audio codificada (102), la senal de audio codificada (102) comprende una primera porcion (104a) codificada de acuerdo con un primer algoritmo de codificacion, una segunda porcion (104b) codificada de acuerdo con un segundo algoritmo de codificacion, parámetros BWE (106) para la primera porcion (104a) y la segunda porcion (104b) y una informacion del modo de codificacion (108) que indica un primer algoritmo de decodificacion o un segundo algoritmo de decodificacion, que comprende: un primer decodificador (110a) decodifica la primera porcion (104a) de acuerdo con el primer algoritmo de decodificacion para una primera porcion de tiempo de la senal codificada (102) para obtener una primera senal decodificada (114a); el segundo decodificador (110b) decodifica la segunda porcion (104b) de acuerdo con el segundo algoritmo de decodificacion para una segunda porcion de tiempo de la senal codificada (102) para obtener una segunda senal decodificada (114b); el modulo BWE (130) posee una frecuencia de cruce (fx) controlable, el modulo BWE (130) configurado para desarrollar un algoritmo de ampliacion de ancho de banda utilizando la primera senal decodificada (114a) y los parámetros BWE (106) para la primera porcion (104a), y para desarrollar un algoritmo de ampliacion de ancho de banda utilizando la segunda senal decodificada (114b) y el parámetro de ampliacion de ancho de banda (106) para la segunda porcion (104b). El controlador (140) controlar la frecuencia de cruce (fx) para el modulo BWE (130) de acuerdo con la informacion del modo de codificacion (108).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US7984108P | 2008-07-11 | 2008-07-11 | |
US10382008P | 2008-10-08 | 2008-10-08 | |
PCT/EP2009/004522 WO2010003545A1 (en) | 2008-07-11 | 2009-06-23 | An apparatus and a method for decoding an encoded audio signal |
Publications (1)
Publication Number | Publication Date |
---|---|
AR072481A1 true AR072481A1 (es) | 2010-09-01 |
Family
ID=40886797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ARP090102547A AR072481A1 (es) | 2008-07-11 | 2009-07-07 | Un aparato y un metodo para decodificar una senal de audio codificada |
Country Status (19)
Country | Link |
---|---|
US (1) | US8275626B2 (es) |
EP (2) | EP2304723B1 (es) |
JP (1) | JP5325293B2 (es) |
KR (1) | KR101224560B1 (es) |
CN (1) | CN102089814B (es) |
AR (1) | AR072481A1 (es) |
AU (1) | AU2009267531B2 (es) |
BR (1) | BRPI0910511B1 (es) |
CA (1) | CA2730232C (es) |
CO (1) | CO6341674A2 (es) |
ES (2) | ES2396927T3 (es) |
HK (2) | HK1154432A1 (es) |
IL (1) | IL210414A (es) |
MX (1) | MX2011000370A (es) |
PL (2) | PL2304723T3 (es) |
RU (1) | RU2483366C2 (es) |
TW (1) | TWI435316B (es) |
WO (1) | WO2010003545A1 (es) |
ZA (1) | ZA201100087B (es) |
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