BR0010672A - Use of adaptive gain quantification and non-uniform symbol lengths for audio encoding - Google Patents
Use of adaptive gain quantification and non-uniform symbol lengths for audio encodingInfo
- Publication number
- BR0010672A BR0010672A BR0010672-0A BR0010672A BR0010672A BR 0010672 A BR0010672 A BR 0010672A BR 0010672 A BR0010672 A BR 0010672A BR 0010672 A BR0010672 A BR 0010672A
- Authority
- BR
- Brazil
- Prior art keywords
- coding
- adaptive gain
- quantification
- symbols
- gain quantification
- Prior art date
Links
- 230000003044 adaptive effect Effects 0.000 title abstract 6
- 238000011002 quantification Methods 0.000 title abstract 6
- 238000000034 method Methods 0.000 abstract 4
- 230000006870 function Effects 0.000 abstract 2
- 230000005236 sound signal Effects 0.000 abstract 1
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
- G10L19/02—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
-
- 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
- G10L19/0204—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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (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)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Abstract
Patente de Invenção: "USO DE QUANTIFICAçãO DE GANHO ADAPTATIVO E COMPRIMENTOS DE SìMBOLO NãO-UNIFORMES PARA UMA CODIFICAçãO DE áUDIO". Técnicas como a codificação de Huffman podem ser usadas, para a representação de componentes de sinal de áudio digital de forma mais eficiente, usando símbolos de comprimento não-uniforme, que podem ser representados por outras técnicas de codificação usando símbolos de comprimento uniforme. Infelizmente, a eficiência de codificação que pode ser obtida por uma codificação de Huffman depende da função de densidade de probabilidade da informação a ser codificada, e o processo de codificação de Huffman em si requer um processamento e recursos de memória consideráveis. Um processo de codificação que use uma quantificação de ganho adaptativo de acordo com a presente invenção pode incluir a vantagem de usar símbolos de comprimento não-uniforme, enquanto elimina os inconvenientes de uma codificação de Huffman. Em uma quantificação de ganho adaptativo, as magnitudes de componentes de sinal a serem codificados são comparadas com um ou mais limites e colocadas em classes, de acordo com os resultados da comparação. As magnitudes dos componentes colocados em uma das classes são modificadas de acordo com um fator de ganho, que está relacionado ao limite usado para a classificação dos componentes. Preferivelmente, o fator de ganho pode ser expresso como uma função apenas do valor limite. Uma quantificação de ganho adaptativo pode ser usada para a codificação de sinais de sub-banda de freq³ência em sistemas de codificação de áudio de banda dividida. Aspectos adicionais incluindo quantificação de ganho adaptativo em cascata, codificação intraquadro, quantificadores de intervalo dividido e de não-sobrecarga são mostrados.Invention Patent: "USE OF ADAPTIVE GAIN QUANTIFICATION AND NON-UNIFORM SYMBOL LENGTHS FOR AUDIO CODING". Techniques such as Huffman coding can be used to represent digital audio signal components more efficiently, using symbols of non-uniform length, which can be represented by other coding techniques using symbols of uniform length. Unfortunately, the coding efficiency that can be obtained by Huffman coding depends on the probability density function of the information to be coded, and the Huffman coding process itself requires considerable processing and memory resources. A coding process that uses an adaptive gain quantification in accordance with the present invention may include the advantage of using symbols of non-uniform length, while eliminating the drawbacks of Huffman coding. In an adaptive gain quantification, the magnitudes of signal components to be encoded are compared with one or more limits and placed in classes, according to the results of the comparison. The magnitudes of the components placed in one of the classes are modified according to a gain factor, which is related to the limit used for the classification of the components. Preferably, the gain factor can be expressed as a function of the limit value only. An adaptive gain quantification can be used for encoding frequency subband signals in split band audio coding systems. Additional aspects including cascading adaptive gain quantification, intraframe coding, split interval and non-overload quantifiers are shown.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29357799A | 1999-04-16 | 1999-04-16 | |
| US09/349,645 US6246345B1 (en) | 1999-04-16 | 1999-07-08 | Using gain-adaptive quantization and non-uniform symbol lengths for improved audio coding |
| PCT/US2000/009604 WO2000063886A1 (en) | 1999-04-16 | 2000-04-11 | Using gain-adaptive quantization and non-uniform symbol lengths for audio coding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| BR0010672A true BR0010672A (en) | 2002-02-19 |
| BRPI0010672B1 BRPI0010672B1 (en) | 2016-06-07 |
Family
ID=26968028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BRPI0010672A BRPI0010672B1 (en) | 1999-04-16 | 2000-04-11 | use of adaptive gain quantization and nonuniform symbol lengths for audio coding |
Country Status (17)
| Country | Link |
|---|---|
| EP (1) | EP1175670B2 (en) |
| JP (1) | JP4843142B2 (en) |
| KR (1) | KR100893281B1 (en) |
| CN (1) | CN1158646C (en) |
| AR (1) | AR023444A1 (en) |
| AT (1) | ATE269574T1 (en) |
| AU (1) | AU771454B2 (en) |
| BR (1) | BRPI0010672B1 (en) |
| CA (1) | CA2368453C (en) |
| DE (1) | DE60011606T3 (en) |
| DK (1) | DK1175670T4 (en) |
| ES (1) | ES2218148T5 (en) |
| HK (1) | HK1045747B (en) |
| MX (1) | MXPA01010447A (en) |
| MY (1) | MY122486A (en) |
| TW (1) | TW536692B (en) |
| WO (1) | WO2000063886A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7447631B2 (en) * | 2002-06-17 | 2008-11-04 | Dolby Laboratories Licensing Corporation | Audio coding system using spectral hole filling |
| DE102004007200B3 (en) | 2004-02-13 | 2005-08-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Device for audio encoding has device for using filter to obtain scaled, filtered audio value, device for quantizing it to obtain block of quantized, scaled, filtered audio values and device for including information in coded signal |
| DE102004007184B3 (en) * | 2004-02-13 | 2005-09-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method and apparatus for quantizing an information signal |
| DE102004007191B3 (en) | 2004-02-13 | 2005-09-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio coding |
| CN101390158B (en) * | 2006-02-24 | 2012-03-14 | 法国电信公司 | Method for binary coding of quantization indices of a signal envelope, method for decoding a signal envelope and corresponding coding and decoding modules |
| DE102006022346B4 (en) | 2006-05-12 | 2008-02-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Information signal coding |
| JP5057590B2 (en) * | 2006-07-24 | 2012-10-24 | マーベル ワールド トレード リミテッド | CONTROL SYSTEM AND DATA STORAGE DEVICE FOR ROTARY DATA STORAGE DEVICE |
| US8571852B2 (en) * | 2007-03-02 | 2013-10-29 | Telefonaktiebolaget L M Ericsson (Publ) | Postfilter for layered codecs |
| US8831933B2 (en) | 2010-07-30 | 2014-09-09 | Qualcomm Incorporated | Systems, methods, apparatus, and computer-readable media for multi-stage shape vector quantization |
| US9208792B2 (en) | 2010-08-17 | 2015-12-08 | Qualcomm Incorporated | Systems, methods, apparatus, and computer-readable media for noise injection |
| KR101492105B1 (en) * | 2011-08-29 | 2015-02-11 | 주식회사 아이벡스피티홀딩스 | Method of encoding moving pictures in amvp mode |
| ES2643746T3 (en) * | 2012-12-13 | 2017-11-24 | Panasonic Intellectual Property Corporation Of America | Voice audio coding device, voice audio decoding device, voice audio coding method and voice audio decoding method |
| CN116366411B (en) * | 2023-03-28 | 2024-03-08 | 扬州宇安电子科技有限公司 | Multi-bit signal quantization self-adaptive threshold generation and quantization method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5365553A (en) * | 1990-11-30 | 1994-11-15 | U.S. Philips Corporation | Transmitter, encoding system and method employing use of a bit need determiner for subband coding a digital signal |
| WO1995032499A1 (en) * | 1994-05-25 | 1995-11-30 | Sony Corporation | Encoding method, decoding method, encoding-decoding method, encoder, decoder, and encoder-decoder |
| JP3307138B2 (en) * | 1995-02-27 | 2002-07-24 | ソニー株式会社 | Signal encoding method and apparatus, and signal decoding method and apparatus |
| US5924064A (en) * | 1996-10-07 | 1999-07-13 | Picturetel Corporation | Variable length coding using a plurality of region bit allocation patterns |
| US6006179A (en) * | 1997-10-28 | 1999-12-21 | America Online, Inc. | Audio codec using adaptive sparse vector quantization with subband vector classification |
-
2000
- 2000-04-11 KR KR1020017013223A patent/KR100893281B1/en active IP Right Grant
- 2000-04-11 EP EP00922036A patent/EP1175670B2/en not_active Expired - Lifetime
- 2000-04-11 JP JP2000612930A patent/JP4843142B2/en not_active Expired - Lifetime
- 2000-04-11 BR BRPI0010672A patent/BRPI0010672B1/en active IP Right Grant
- 2000-04-11 AU AU42279/00A patent/AU771454B2/en not_active Expired
- 2000-04-11 MX MXPA01010447A patent/MXPA01010447A/en active IP Right Grant
- 2000-04-11 AT AT00922036T patent/ATE269574T1/en active
- 2000-04-11 DE DE60011606T patent/DE60011606T3/en not_active Expired - Lifetime
- 2000-04-11 WO PCT/US2000/009604 patent/WO2000063886A1/en active IP Right Grant
- 2000-04-11 ES ES00922036T patent/ES2218148T5/en not_active Expired - Lifetime
- 2000-04-11 DK DK00922036T patent/DK1175670T4/en active
- 2000-04-11 CA CA002368453A patent/CA2368453C/en not_active Expired - Lifetime
- 2000-04-11 AR ARP000101655A patent/AR023444A1/en active IP Right Grant
- 2000-04-11 TW TW089106701A patent/TW536692B/en not_active IP Right Cessation
- 2000-04-11 CN CNB008063303A patent/CN1158646C/en not_active Expired - Lifetime
- 2000-04-14 MY MYPI20001607A patent/MY122486A/en unknown
-
2002
- 2002-10-03 HK HK02107256.2A patent/HK1045747B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN1347549A (en) | 2002-05-01 |
| HK1045747B (en) | 2004-12-31 |
| DE60011606D1 (en) | 2004-07-22 |
| EP1175670A1 (en) | 2002-01-30 |
| EP1175670B1 (en) | 2004-06-16 |
| ES2218148T5 (en) | 2008-02-16 |
| DE60011606T3 (en) | 2008-01-24 |
| CA2368453A1 (en) | 2000-10-26 |
| AR023444A1 (en) | 2002-09-04 |
| DE60011606T2 (en) | 2005-06-23 |
| KR20010112434A (en) | 2001-12-20 |
| JP4843142B2 (en) | 2011-12-21 |
| MXPA01010447A (en) | 2002-07-30 |
| TW536692B (en) | 2003-06-11 |
| WO2000063886A1 (en) | 2000-10-26 |
| DK1175670T4 (en) | 2007-11-19 |
| AU771454B2 (en) | 2004-03-25 |
| KR100893281B1 (en) | 2009-04-17 |
| JP2002542522A (en) | 2002-12-10 |
| HK1045747A1 (en) | 2002-12-06 |
| ATE269574T1 (en) | 2004-07-15 |
| CN1158646C (en) | 2004-07-21 |
| CA2368453C (en) | 2009-12-08 |
| EP1175670B2 (en) | 2007-09-19 |
| DK1175670T3 (en) | 2004-10-11 |
| AU4227900A (en) | 2000-11-02 |
| ES2218148T3 (en) | 2004-11-16 |
| BRPI0010672B1 (en) | 2016-06-07 |
| MY122486A (en) | 2006-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| BR0010672A (en) | Use of adaptive gain quantification and non-uniform symbol lengths for audio encoding | |
| RU2224302C2 (en) | Method and device for scalable audio-signal coding/decoding | |
| CA2356869A1 (en) | Method and devices for coding or decoding an audio signal or bit stream | |
| ES2143312T3 (en) | CODING AND DECODING AUDIO SIGNALS WITH THE USE OF STEREO INTENSITY AND PREDICTION. | |
| CA2261824A1 (en) | Digital modulation system using extended code set | |
| ES2906415T3 (en) | Arithmetic encoding or arithmetic decoding method and device | |
| WO2003034746A3 (en) | Improved variable length decoder | |
| BR9405445A (en) | Signal encoder and decoder apparatus suitable for encoding an input signal and decoding an encoded signal, recording medium where encoded signals are recorded, and signal encoding and decoding process for encoding an input signal and decoding an encoded signal. | |
| US7372379B1 (en) | Method and system for decoding N-tuple variable length code | |
| CA2327627A1 (en) | Process for processing at least one coded binary audio flux organized into frames | |
| CN1322405A (en) | Device and method for entropy encoding of information words and device and method for decoding entropy-encoded information words | |
| BR9908612A (en) | Apparatus for encoding and decoding an information signal, process for encoding an information signal and recording medium | |
| DK0954909T3 (en) | Method of encoding an audio signal | |
| WO2003043346A1 (en) | Image encoding method, image decoding method, image encoder, image decode, program, computer data signal, and image transmission system | |
| ES2097057T3 (en) | ADAPTABLE HYBRID ALLOCATION FOR AN AUDIO ENCODER AND DECODER. | |
| DE69329796D1 (en) | METHOD FOR CODING, DECODING AND COMPRESSING AUDIO DATA | |
| EP2297856A1 (en) | Method for encoding a symbol, method for decoding a symbol, method for transmitting a symbol from a transmitter to a receiver, encoder, decoder and system for transmitting a symbol from a transmitter to a receiver | |
| CA2927877C (en) | Coding and decoding of spectral peak positions | |
| KR100968057B1 (en) | Encoding method and device, and decoding method and device | |
| WO2000035187B1 (en) | Improvement of fine granularity scalability using bit plane coding of transform coefficients | |
| CN113192517B (en) | Audio encoding and decoding method and audio encoding and decoding equipment | |
| BR9906331A (en) | Arithmetic encoder / decoder apparatus for arithmetically encoding / decoding a digital information signal, arithmetic encoding process for arithmetically encoding a digital information signal, and recording medium | |
| EP0723257A3 (en) | Voice signal transmission system using spectral parameter and voice parameter encoding apparatus and decoding apparatus used for the voice signal transmission system | |
| KR960043830A (en) | MPEG and AC-3 Combined Digital Audio Signal Decoder | |
| Crochiere | A Mid‐Rise/Mid‐Tread Quantizer Switch for Improved Idle‐Channel Performance in Adaptive Coders |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B08E | Application fees: payment of additional fee required [chapter 8.5 patent gazette] |
Free format text: COMPLEMENTAR A 7A ANUIDADE REFERENTE A GUIA 920602228320 DE ACORDO COM A TABELA VIGENTE. |
|
| B08H | Application fees: decision cancelled [chapter 8.8 patent gazette] |
Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 2014 DE 11/08/2009 POR TER SIDO INDEVIDO. |
|
| B06A | Patent application procedure suspended [chapter 6.1 patent gazette] | ||
| B07A | Application suspended after technical examination (opinion) [chapter 7.1 patent gazette] | ||
| B07A | Application suspended after technical examination (opinion) [chapter 7.1 patent gazette] | ||
| B09A | Decision: intention to grant [chapter 9.1 patent gazette] | ||
| B16A | Patent or certificate of addition of invention granted [chapter 16.1 patent gazette] |
Free format text: PRAZO DE VALIDADE: (VINTE) ANOS CONTADOS A PARTIR DE 11/04/2000, OBSERVADAS AS CONDICOES LEGAIS. |