AR075200A1 - AUDIO CODING, AUDIO DECODER, METHOD FOR CODING AN INPUT AUDIO INFORMATION, METHOD FOR DECODING AN INPUT AUDIO INFORMATION AND COMPUTER PROGRAM THAT USES IMPROVED CODING TABLES - Google Patents
AUDIO CODING, AUDIO DECODER, METHOD FOR CODING AN INPUT AUDIO INFORMATION, METHOD FOR DECODING AN INPUT AUDIO INFORMATION AND COMPUTER PROGRAM THAT USES IMPROVED CODING TABLESInfo
- Publication number
- AR075200A1 AR075200A1 ARP100100219A ARP100100219A AR075200A1 AR 075200 A1 AR075200 A1 AR 075200A1 AR P100100219 A ARP100100219 A AR P100100219A AR P100100219 A ARP100100219 A AR P100100219A AR 075200 A1 AR075200 A1 AR 075200A1
- Authority
- AR
- Argentina
- Prior art keywords
- coding
- audio
- spectral values
- audio information
- index
- Prior art date
Links
- 238000000034 method Methods 0.000 title 2
- 238000004590 computer program Methods 0.000 title 1
- 230000003595 spectral effect Effects 0.000 abstract 6
- 230000001186 cumulative effect Effects 0.000 abstract 3
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
Un decodificador de audio 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 del dominio de la frecuencia al dominio del tiempo para proveer una representacion de audio del dominio del tiempo usando los valores espectrales decodificados, para obtener una informacion de audio decodificada. El decodificador aritmético es configurado para derivar un índice de grupo a partir de una palabra de codigo de longitud variable que representa el índice de grupo en dependencia de un índice de estado. El decodificador aritmético es configurado para derivar los valores de un plano de los bits más significativos de una tupIa de valores espectrales usando el índice de grupo y un índice de elemento, y para proveer una tupla de valores espectrales decodificados usando los valores del plano de los bis más significativos de la tupla de valores espectrales. El decodificador aritmético es configurado para seleccionar una tabla de frecuencias acumulativas de un conjunto de 32 tablas de frecuencias acumulativas en dependencia del índice de estado, y para aplicar la tabla de frecuencias acumulativas seleccionada para derivar el índice de grupo a partir de la palabra de codigo de longitud variable que representa el índice de grupo.An audio decoder comprises an arithmetic decoder to provide a plurality of decoded spectral values based on an arithmetically encoded representation of the spectral values and a frequency domain to time domain converter to provide an audio representation of the time domain using decoded spectral values, to obtain decoded audio information. The arithmetic decoder is configured to derive a group index from a variable-length code word that represents the group index depending on a state index. The arithmetic decoder is configured to derive the values of a plane from the most significant bits of a tupIa of spectral values using the group index and an element index, and to provide a tuple of decoded spectral values using the values of the plane of the bis most significant tuple spectral values. The arithmetic decoder is configured to select a cumulative frequency table from a set of 32 cumulative frequency tables depending on the status index, and to apply the selected cumulative frequency table to derive the group index from the code word of variable length representing the group index.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14788509P | 2009-01-28 | 2009-01-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AR075200A1 true AR075200A1 (en) | 2011-03-16 |
Family
ID=42245645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ARP100100219A AR075200A1 (en) | 2009-01-28 | 2010-01-28 | AUDIO CODING, AUDIO DECODER, METHOD FOR CODING AN INPUT AUDIO INFORMATION, METHOD FOR DECODING AN INPUT AUDIO INFORMATION AND COMPUTER PROGRAM THAT USES IMPROVED CODING TABLES |
Country Status (3)
| Country | Link |
|---|---|
| AR (1) | AR075200A1 (en) |
| TW (1) | TW201126508A (en) |
| WO (1) | WO2010086342A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3001593A1 (en) * | 2013-01-31 | 2014-08-01 | France Telecom | IMPROVED FRAME LOSS CORRECTION AT SIGNAL DECODING. |
| US9769586B2 (en) | 2013-05-29 | 2017-09-19 | Qualcomm Incorporated | Performing order reduction with respect to higher order ambisonic coefficients |
| EP2824661A1 (en) * | 2013-07-11 | 2015-01-14 | Thomson Licensing | Method and Apparatus for generating from a coefficient domain representation of HOA signals a mixed spatial/coefficient domain representation of said HOA signals |
| US10770087B2 (en) | 2014-05-16 | 2020-09-08 | Qualcomm Incorporated | Selecting codebooks for coding vectors decomposed from higher-order ambisonic audio signals |
| CN112509591B (en) * | 2020-12-04 | 2024-05-14 | 北京百瑞互联技术股份有限公司 | Audio encoding and decoding method and system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101237413B1 (en) * | 2005-12-07 | 2013-02-26 | 삼성전자주식회사 | Method and apparatus for encoding/decoding audio signal |
-
2010
- 2010-01-27 WO PCT/EP2010/050954 patent/WO2010086342A1/en not_active Ceased
- 2010-01-28 AR ARP100100219A patent/AR075200A1/en not_active Application Discontinuation
- 2010-01-28 TW TW099102412A patent/TW201126508A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010086342A1 (en) | 2010-08-05 |
| TW201126508A (en) | 2011-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2610163T3 (en) | Audio encoder, audio decoder, method for encoding audio information, method for decoding audio information and computer program that uses an interactive interval size reduction | |
| MX338171B (en) | Audio encoder, audio decoder, method for encoding an audio information, method for decoding an audio information and computer program using an optimized hash table. | |
| AR084465A1 (en) | AUDIO SIGNAL DECODER, AUDIO SIGNAL ENCODER, METHOD FOR DECODING AN AUDIO SIGNAL, METHOD FOR CODING AN AUDIO SIGNAL AND COMPUTER PROGRAM THAT USE A DEPENDENT ADAPTATION OF THE FREQUENCY OF A CODING CONTEXT | |
| AR079886A1 (en) | AUDIO ENCODER, METHOD FOR CODING AND AUDIO INFORMATION, METHOD FOR DECODING AN AUDIO INFORMATION AND COMPUTER PROGRAM THAT USES A HASH CHART THAT DESCRIBES BOTH SIGNIFICANT STATE VALUES AS INTERVAL LIMITS | |
| AR123837A2 (en) | AUDIO ENCODER FOR THE ENCODING OF A MULTI-CHANNEL SIGNAL, AN AUDIO DECODER FOR THE DECODING OF AN ENCODED AUDIO SIGNAL, METHODS AND COMPUTER PROGRAM | |
| ES2422412T3 (en) | Audio encoder, procedure for audio coding and computer program | |
| SV2016005283A (en) | COEFFICIENT LEVEL CODING IN A VIDEO CODING PROCESS | |
| EP2433367A4 (en) | METHOD AND APPARATUS FOR VARIABLE LENGTH ENCODING | |
| AR075200A1 (en) | AUDIO CODING, AUDIO DECODER, METHOD FOR CODING AN INPUT AUDIO INFORMATION, METHOD FOR DECODING AN INPUT AUDIO INFORMATION AND COMPUTER PROGRAM THAT USES IMPROVED CODING TABLES | |
| AR115901A2 (en) | LOW FREQUENCY EMPHASIS FOR LPC-BASED CODING (LINEAR PREDICTION CODING) IN THE FREQUENCY DOMAIN | |
| BR112015026244A8 (en) | HYBRID BACKWARDS COMPATIBLE SIGNAL ENCODING AND DECODING | |
| BR112017016341A2 (en) | palette mode encoding for video encoding | |
| AR078573A1 (en) | MULTIMODE DECODER FOR AUDIO SIGNAL, MULTIMODE ENCODER FOR AUDIO SIGNAL, METHOD AND COMPUTER PROGRAM THAT USE A NOISE MODELING BASED ON LINEARITY-PREDICTION-CODING | |
| AR072500A1 (en) | TIME DISTORTION CONTOUR CALCULATOR, AUDIO SIGNAL ENCODER, CODIFIED AUDIO SIGNAL REPRESENTATION, METHODS AND COMPUTER PROGRAM | |
| MX367071B (en) | Data encoding and decoding. | |
| AR083365A1 (en) | DEVICE AND METHOD OF CODIFICATION, DEVICE AND METHOD OF DECODING AND PROGRAM | |
| MX2020004768A (en) | Audio encoders, audio decoders, methods and computer programs adapting an encoding and decoding of least significant bits. | |
| MX2018010754A (en) | ERROR HIDDEN UNIT, AUDIO DECODER AND RELATED METHOD AND COMPUTER PROGRAM THAT DISAPPEARS A HIDDEN AUDIO FRAME ACCORDING TO DIFFERENT DAMPING FACTORS FOR DIFFERENT FREQUENCY BANDS. | |
| AR094673A1 (en) | DECODER TO GENERATE AN IMPROVED AUDIO SIGNAL IN FREQUENCY, DECODING METHOD, CODIFIER TO GENERATE A CODED SIGNAL AND CODING METHOD USING COMPACT SELECTED SIDE INFORMATION | |
| MX373707B (en) | PARITY INTERLEADING APPARATUS FOR ENCODING VARIABLE-LENGTH SIGNALING INFORMATION AND PARITY INTERLEADING METHOD USING IT. | |
| AR106308A1 (en) | LAYER CODING FOR SOUND REPRESENTATIONS OR COMPRESSED SOUND FIELD | |
| MX374566B (en) | LOW DENSITY PARITY CHECK ENCODER HAVING A LENGTH OF 16200 AND A CODE INDEX OF 3/15 AND A LOW DENSITY PARITY CHECK ENCODING METHOD USING THE SAME. | |
| BR112018011005A2 (en) | Method and apparatus for coding audio objects based on reported source separation | |
| MX2018004163A (en) | Layered coding for compressed sound or sound field representations. | |
| BR112017021424A2 (en) | Audio encoder and method for encoding an audio signal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FA | Abandonment or withdrawal |