CN1158646C - 在音频编码中应用增益自适应量化和变长码 - Google Patents
在音频编码中应用增益自适应量化和变长码 Download PDFInfo
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- CN1158646C CN1158646C CNB008063303A CN00806330A CN1158646C CN 1158646 C CN1158646 C CN 1158646C CN B008063303 A CNB008063303 A CN B008063303A CN 00806330 A CN00806330 A CN 00806330A CN 1158646 C CN1158646 C CN 1158646C
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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
- G10L19/032—Quantisation or dequantisation of spectral components
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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
- G10L19/0204—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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- 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)
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Abstract
Description
增益 | 分配 |
1 | b |
2 | b-1 |
4 | b-2 |
8 | b-3 |
Gain(X,N,b){ Th2=(1-2^(-b))/gf[1]; //对增益因子G=2初始化阈值 Th4=Th2/2; //对增益因子G=4初始化阈值 Th8=Th4/2; //对增益因子G=8初始化阈值 n2=n4=n8=0; //初始化计数器 for(k=1 to N){ //对每个分量k初始化计数器 CompMag=Abs9X[k]); //获得分量幅值 if(CompMag>Th2) n2=n2+1; //计数上述Th2的分量 else if((CompMag>Th4) n4=n4+1; //计数Th2与Th4之间的分量 else if((C0mpMag>Th8) n8=n8+1; //计数Th4与Th8之间的分量 <dp n="d16"/> } n24=n2+n4; //上述Th4没有大幅值分量 n248=n24+n8; //上述Th8没有大幅值分量 benefit2=Min(b-1,1);//使用G=2时节省的每个小分量位数 benefit4=Min(b-1,2);//使用G=4时节省的每个小分量位数 benefit8=Min(b-1,3);//使用G=8时节省的每个小分量位数 net[0]=0;//对没有增益修正纯收益 net[1]=(N-n2)*benefit2-n2*(b-benefit2);//使用G=2纯收益 net[2]=(N-n24)*benefit4-n24*(b-benefit4);//使用G=4纯收益 net[3]=(N-n248)*benefit8-n248*(b-benefit8);//使用G=8纯收益 j=IndexMax(net[j],j=0 to 3);//获得最大收益索引 Gain=gf[j];//获得增益因子 }
Gain2(X,N){ benefit2=Min(b-1,1);//使用G=2时节省的每个小分量位数 benefit4=Min(b-1,2);//使用G=4时节省的每个小分量位数 benefit8=Min(b-1,3);//使用G=8时节省的每个小分量位数 net[0]=0;//对没有增益修正纯收益 net[1]=(N-n2)*benefit2-n2*(b-benefit2);//使用G=2纯收益 net[2]=(N-n24)*benefit4-n24*(b-benefit4);//使用G=4纯收益 net[3]=(N-n248)*benefit8-n248*(b-benefit8);//使用G=8纯收益 j=IndexMax(net[j],j=0 to 3);//获得最大收益索引 Gain=gf[j];//获得增益因子 }
Claims (28)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US29357799A | 1999-04-16 | 1999-04-16 | |
US09/293,577 | 1999-04-16 | ||
US09/349,645 | 1999-07-08 | ||
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 (2)
Publication Number | Publication Date |
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CN1347549A CN1347549A (zh) | 2002-05-01 |
CN1158646C true CN1158646C (zh) | 2004-07-21 |
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Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB008063303A Expired - Lifetime CN1158646C (zh) | 1999-04-16 | 2000-04-11 | 在音频编码中应用增益自适应量化和变长码 |
Country Status (17)
Country | Link |
---|---|
EP (1) | EP1175670B2 (zh) |
JP (1) | JP4843142B2 (zh) |
KR (1) | KR100893281B1 (zh) |
CN (1) | CN1158646C (zh) |
AR (1) | AR023444A1 (zh) |
AT (1) | ATE269574T1 (zh) |
AU (1) | AU771454B2 (zh) |
BR (1) | BRPI0010672B1 (zh) |
CA (1) | CA2368453C (zh) |
DE (1) | DE60011606T3 (zh) |
DK (1) | DK1175670T4 (zh) |
ES (1) | ES2218148T5 (zh) |
HK (1) | HK1045747B (zh) |
MX (1) | MXPA01010447A (zh) |
MY (1) | MY122486A (zh) |
TW (1) | TW536692B (zh) |
WO (1) | WO2000063886A1 (zh) |
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 (de) | 2004-02-13 | 2005-08-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audiocodierung |
DE102004007184B3 (de) * | 2004-02-13 | 2005-09-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren und Vorrichtung zum Quantisieren eines Informationssignals |
DE102004007191B3 (de) | 2004-02-13 | 2005-09-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audiocodierung |
CN101390158B (zh) * | 2006-02-24 | 2012-03-14 | 法国电信公司 | 量化索引的编码方法、解码信号包络方法、编解码模块 |
DE102006022346B4 (de) | 2006-05-12 | 2008-02-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Informationssignalcodierung |
JP5057590B2 (ja) * | 2006-07-24 | 2012-10-24 | マーベル ワールド トレード リミテッド | 回転式データストレージデバイス用の制御システムおよびデータストレージデバイス |
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 (ko) * | 2011-08-29 | 2015-02-11 | 주식회사 아이벡스피티홀딩스 | Amvp 모드에서 영상 부호화 방법 |
ES2643746T3 (es) * | 2012-12-13 | 2017-11-24 | Panasonic Intellectual Property Corporation Of America | Dispositivo de codificación de audio de voz, dispositivo de descodificación de audio de voz, método de codificación de audio de voz y método de descodificación de audio de voz |
CN116366411B (zh) * | 2023-03-28 | 2024-03-08 | 扬州宇安电子科技有限公司 | 一种多比特信号量化自适应门限生成及量化方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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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 |
WO1995032499A1 (fr) * | 1994-05-25 | 1995-11-30 | Sony Corporation | Procede de codage, procede de decodage, procede de codage-decodage, codeur, decodeur et codeur-decodeur |
JP3307138B2 (ja) * | 1995-02-27 | 2002-07-24 | ソニー株式会社 | 信号符号化方法及び装置、並びに信号復号化方法及び装置 |
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 |
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2000
- 2000-04-11 KR KR1020017013223A patent/KR100893281B1/ko active IP Right Grant
- 2000-04-11 EP EP00922036A patent/EP1175670B2/en not_active Expired - Lifetime
- 2000-04-11 JP JP2000612930A patent/JP4843142B2/ja not_active Expired - Lifetime
- 2000-04-11 BR BRPI0010672A patent/BRPI0010672B1/pt active IP Right Grant
- 2000-04-11 AU AU42279/00A patent/AU771454B2/en not_active Expired
- 2000-04-11 MX MXPA01010447A patent/MXPA01010447A/es active IP Right Grant
- 2000-04-11 AT AT00922036T patent/ATE269574T1/de active
- 2000-04-11 DE DE60011606T patent/DE60011606T3/de 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/es not_active Expired - Lifetime
- 2000-04-11 DK DK00922036T patent/DK1175670T4/da active
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- 2000-04-11 AR ARP000101655A patent/AR023444A1/es active IP Right Grant
- 2000-04-11 TW TW089106701A patent/TW536692B/zh not_active IP Right Cessation
- 2000-04-11 CN CNB008063303A patent/CN1158646C/zh not_active Expired - Lifetime
- 2000-04-14 MY MYPI20001607A patent/MY122486A/en unknown
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2002
- 2002-10-03 HK HK02107256.2A patent/HK1045747B/zh unknown
Also Published As
Publication number | Publication date |
---|---|
CN1347549A (zh) | 2002-05-01 |
HK1045747B (zh) | 2004-12-31 |
DE60011606D1 (de) | 2004-07-22 |
EP1175670A1 (en) | 2002-01-30 |
EP1175670B1 (en) | 2004-06-16 |
ES2218148T5 (es) | 2008-02-16 |
DE60011606T3 (de) | 2008-01-24 |
CA2368453A1 (en) | 2000-10-26 |
AR023444A1 (es) | 2002-09-04 |
DE60011606T2 (de) | 2005-06-23 |
KR20010112434A (ko) | 2001-12-20 |
JP4843142B2 (ja) | 2011-12-21 |
MXPA01010447A (es) | 2002-07-30 |
TW536692B (en) | 2003-06-11 |
WO2000063886A1 (en) | 2000-10-26 |
DK1175670T4 (da) | 2007-11-19 |
AU771454B2 (en) | 2004-03-25 |
KR100893281B1 (ko) | 2009-04-17 |
JP2002542522A (ja) | 2002-12-10 |
HK1045747A1 (en) | 2002-12-06 |
ATE269574T1 (de) | 2004-07-15 |
CA2368453C (en) | 2009-12-08 |
BR0010672A (pt) | 2002-02-19 |
EP1175670B2 (en) | 2007-09-19 |
DK1175670T3 (da) | 2004-10-11 |
AU4227900A (en) | 2000-11-02 |
ES2218148T3 (es) | 2004-11-16 |
BRPI0010672B1 (pt) | 2016-06-07 |
MY122486A (en) | 2006-04-29 |
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