AR023444A1 - METHOD AND APPARATUS FOR DECODING A CODED SIGNAL AND METHOD AND APPARATUS FOR CODING AN ENTRY SIGNAL - Google Patents

METHOD AND APPARATUS FOR DECODING A CODED SIGNAL AND METHOD AND APPARATUS FOR CODING AN ENTRY SIGNAL

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Publication number
AR023444A1
AR023444A1 ARP000101655A ARP000101655A AR023444A1 AR 023444 A1 AR023444 A1 AR 023444A1 AR P000101655 A ARP000101655 A AR P000101655A AR P000101655 A ARP000101655 A AR P000101655A AR 023444 A1 AR023444 A1 AR 023444A1
Authority
AR
Argentina
Prior art keywords
coding
gain
quantification
adaptive
huffman
Prior art date
Application number
ARP000101655A
Other languages
Spanish (es)
Original Assignee
Dolby Lab Licensing Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26968028&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AR023444(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US09/349,645 external-priority patent/US6246345B1/en
Application filed by Dolby Lab Licensing Corp filed Critical Dolby Lab Licensing Corp
Publication of AR023444A1 publication Critical patent/AR023444A1/en

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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

Abstract

Se pueden utilizar técnicas similares a la codificacion de Huffman para representar componentes de senales de audio digital más eficientemente utilizandosímbolos de longitud no uniforme que pueden ser representados por otras técnicas de codificacionutilizando símbolos de longitud uniforme. Desafortunadamente,la eficiencia de codificacion que se puede obtener por la codificacion de Huffman depende de la funcion de densidad de probabilidad de la informacioncodificada y el procedimiento decodific acion de Huffman mismo requiere considerables recursos de procesamiento y memoria. Un procedimiento de codificacion queutiliza cuantificacion adaptativa de ganancia de acuerdo al presente puede obtener la ventaja de utilizar símbolos delongitud no u niforme mientras se superanlas deficiencias de la codificacion de Huffman. En la cuantificacion adaptativa de ganancia, las magnitudes de los componentes de las senales pueden sercodificados y comparados a uno o más umbrales ycolocados en clases de acuerdo a los resultados de la comparacion. Las magnitudes de los componentes colocadosen una de las clases son modificados de acuerdo a un factor de ganancia que está relacionado con el umbral utilizado para clasificar loscomponentes.Preferentement e, el factor de ganancia puede ser expresado como una funcion de solo el valor de umbral. La cuantificacion adaptativa de ganancia puede serutilizada para codificar senales de sub-banda de frecuencia en disposiciones decodificacion de audio de banda dividida. Se revelan características adicionalesincluyendo cuantificacion adaptativa de ganancia en cascada, codificacion intra cuadros, cuantificadores de intervalo dividido y cuantificadores nosobrecargantes.Techniques similar to Huffman coding can be used to represent digital audio signal components more efficiently using non-uniform length symbols that can be represented by other coding techniques using uniform length symbols. Unfortunately, the coding efficiency that can be obtained by Huffman coding depends on the probability density function of the encoded information and Huffman's decoding procedure itself requires considerable processing and memory resources. A coding procedure that uses adaptive quantification of gain according to the present can obtain the advantage of using non-uniform length symbols while overcoming the deficiencies of Huffman coding. In adaptive gain quantification, the magnitudes of the signal components can be coded and compared to one or more thresholds 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 that is related to the threshold used to classify the components. Preferably, the gain factor can be expressed as a function of only the threshold value. Adaptive gain quantification can be used to encode frequency sub-band signals in split-band audio decoding arrangements. Additional features are revealed including adaptive cascade gain quantification, intraframe coding, split interval quantifiers and non-overloading quantifiers.

ARP000101655A 1999-04-16 2000-04-11 METHOD AND APPARATUS FOR DECODING A CODED SIGNAL AND METHOD AND APPARATUS FOR CODING AN ENTRY SIGNAL AR023444A1 (en)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
AR023444A1 true AR023444A1 (en) 2002-09-04

Family

ID=26968028

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP000101655A AR023444A1 (en) 1999-04-16 2000-04-11 METHOD AND APPARATUS FOR DECODING A CODED SIGNAL AND METHOD AND APPARATUS FOR CODING AN ENTRY SIGNAL

Country Status (17)

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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)

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US7447631B2 (en) * 2002-06-17 2008-11-04 Dolby Laboratories Licensing Corporation Audio coding system using spectral hole filling
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
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
DE102004007191B3 (en) 2004-02-13 2005-09-01 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio coding
US8315880B2 (en) * 2006-02-24 2012-11-20 France Telecom 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
ATE548727T1 (en) * 2007-03-02 2012-03-15 Ericsson Telefon Ab L M POST-FILTER FOR LAYERED CODECS
US20120029926A1 (en) 2010-07-30 2012-02-02 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for dependent-mode coding of audio signals
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
EP2933799B1 (en) 2012-12-13 2017-07-12 Panasonic Intellectual Property Corporation of America Voice audio encoding device, voice audio decoding device, voice audio encoding 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

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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
DE69522187T2 (en) * 1994-05-25 2002-05-02 Sony Corp METHOD AND DEVICE FOR CODING, DECODING AND CODING-DECODING
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

Also Published As

Publication number Publication date
KR20010112434A (en) 2001-12-20
AU771454B2 (en) 2004-03-25
DE60011606D1 (en) 2004-07-22
EP1175670A1 (en) 2002-01-30
DE60011606T3 (en) 2008-01-24
BRPI0010672B1 (en) 2016-06-07
ES2218148T3 (en) 2004-11-16
KR100893281B1 (en) 2009-04-17
CN1158646C (en) 2004-07-21
JP2002542522A (en) 2002-12-10
DK1175670T3 (en) 2004-10-11
EP1175670B2 (en) 2007-09-19
TW536692B (en) 2003-06-11
MXPA01010447A (en) 2002-07-30
HK1045747A1 (en) 2002-12-06
MY122486A (en) 2006-04-29
ES2218148T5 (en) 2008-02-16
DE60011606T2 (en) 2005-06-23
CA2368453C (en) 2009-12-08
DK1175670T4 (en) 2007-11-19
BR0010672A (en) 2002-02-19
AU4227900A (en) 2000-11-02
JP4843142B2 (en) 2011-12-21
HK1045747B (en) 2004-12-31
ATE269574T1 (en) 2004-07-15
WO2000063886A1 (en) 2000-10-26
CN1347549A (en) 2002-05-01
EP1175670B1 (en) 2004-06-16
CA2368453A1 (en) 2000-10-26

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