CN1552060A - 通过降低前噪声改善低比特速率音频编码系统的瞬时性能 - Google Patents
通过降低前噪声改善低比特速率音频编码系统的瞬时性能 Download PDFInfo
- Publication number
- CN1552060A CN1552060A CNA028095421A CN02809542A CN1552060A CN 1552060 A CN1552060 A CN 1552060A CN A028095421 A CNA028095421 A CN A028095421A CN 02809542 A CN02809542 A CN 02809542A CN 1552060 A CN1552060 A CN 1552060A
- Authority
- CN
- China
- Prior art keywords
- time
- signal
- scaling
- momentary
- audio
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 230000001052 transient effect Effects 0.000 title abstract description 7
- 230000005236 sound signal Effects 0.000 claims abstract description 118
- 230000002123 temporal effect Effects 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 147
- 238000005070 sampling Methods 0.000 claims description 46
- 230000000694 effects Effects 0.000 claims description 41
- 238000006243 chemical reaction Methods 0.000 claims description 38
- 238000005516 engineering process Methods 0.000 claims description 31
- 230000009466 transformation Effects 0.000 claims description 21
- 230000006835 compression Effects 0.000 claims description 20
- 238000007906 compression Methods 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 17
- 230000008859 change Effects 0.000 claims description 12
- 238000012217 deletion Methods 0.000 claims description 8
- 230000037430 deletion Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 4
- 230000001550 time effect Effects 0.000 claims 1
- 238000013139 quantization Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 26
- 238000012545 processing Methods 0.000 description 21
- 230000008901 benefit Effects 0.000 description 15
- 230000006870 function Effects 0.000 description 11
- 238000001914 filtration Methods 0.000 description 9
- 230000009467 reduction Effects 0.000 description 7
- 238000001228 spectrum Methods 0.000 description 7
- 230000006378 damage Effects 0.000 description 6
- 230000006872 improvement Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000004904 shortening Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 4
- 238000012952 Resampling Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 230000007850 degeneration Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 241001269238 Data Species 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 101100433727 Caenorhabditis elegans got-1.2 gene Proteins 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000030808 detection of mechanical stimulus involved in sensory perception of sound Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal 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
-
- 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
- G10L19/0212—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 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
- G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
-
- 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
- G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
- G10L19/025—Detection of transients or attacks for time/frequency resolution switching
Abstract
Description
Claims (38)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US29028601P | 2001-05-10 | 2001-05-10 | |
US60/290,286 | 2001-05-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1552060A true CN1552060A (zh) | 2004-12-01 |
CN1312662C CN1312662C (zh) | 2007-04-25 |
Family
ID=23115313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB028095421A Expired - Lifetime CN1312662C (zh) | 2001-05-10 | 2002-04-25 | 通过降低前噪声改善音频编码系统的瞬时性能的方法 |
Country Status (14)
Country | Link |
---|---|
US (1) | US7313519B2 (zh) |
EP (1) | EP1386312B1 (zh) |
JP (1) | JP4290997B2 (zh) |
KR (1) | KR100945673B1 (zh) |
CN (1) | CN1312662C (zh) |
AT (1) | ATE387000T1 (zh) |
AU (1) | AU2002307533B2 (zh) |
CA (1) | CA2445480C (zh) |
DE (1) | DE60225130T2 (zh) |
DK (1) | DK1386312T3 (zh) |
ES (1) | ES2298394T3 (zh) |
HK (1) | HK1070457A1 (zh) |
MX (1) | MXPA03010237A (zh) |
WO (1) | WO2002093560A1 (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008141579A1 (fr) * | 2007-05-17 | 2008-11-27 | Spreadtrum Communications (Shanghai) Co., Ltd. | Procédé de codage et de décodage de signal audio transitoire |
WO2009092309A1 (zh) * | 2008-01-16 | 2009-07-30 | Huawei Technologies Co., Ltd. | 一种量化噪声泄漏控制方法及装置 |
CN101308655B (zh) * | 2007-05-16 | 2011-07-06 | 展讯通信(上海)有限公司 | 一种音频编解码方法与装置 |
Families Citing this family (57)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4134297A1 (de) * | 1991-10-17 | 1993-04-22 | Behringwerke Ag | Monoclonale antikoerper gegen mycoplasma pneumoniae, diese produzierende hybridome, verfahren zu deren herstellung sowie deren verwendung |
US7283954B2 (en) | 2001-04-13 | 2007-10-16 | Dolby Laboratories Licensing Corporation | Comparing audio using characterizations based on auditory events |
US7610205B2 (en) * | 2002-02-12 | 2009-10-27 | Dolby Laboratories Licensing Corporation | High quality time-scaling and pitch-scaling of audio signals |
US7461002B2 (en) * | 2001-04-13 | 2008-12-02 | Dolby Laboratories Licensing Corporation | Method for time aligning audio signals using characterizations based on auditory events |
US7711123B2 (en) | 2001-04-13 | 2010-05-04 | Dolby Laboratories Licensing Corporation | Segmenting audio signals into auditory events |
WO2002093560A1 (en) | 2001-05-10 | 2002-11-21 | Dolby Laboratories Licensing Corporation | Improving transient performance of low bit rate audio coding systems by reducing pre-noise |
US7171367B2 (en) | 2001-12-05 | 2007-01-30 | Ssi Corporation | Digital audio with parameters for real-time time scaling |
US7240001B2 (en) * | 2001-12-14 | 2007-07-03 | Microsoft Corporation | Quality improvement techniques in an audio encoder |
US20030182106A1 (en) * | 2002-03-13 | 2003-09-25 | Spectral Design | Method and device for changing the temporal length and/or the tone pitch of a discrete audio signal |
JP4076887B2 (ja) * | 2003-03-24 | 2008-04-16 | ローランド株式会社 | ボコーダ装置 |
ES2354427T3 (es) * | 2003-06-30 | 2011-03-14 | Koninklijke Philips Electronics N.V. | Mejora de la calidad de audio decodificado mediante la adición de ruido. |
US7460990B2 (en) | 2004-01-23 | 2008-12-02 | Microsoft Corporation | Efficient coding of digital media spectral data using wide-sense perceptual similarity |
ATE527654T1 (de) | 2004-03-01 | 2011-10-15 | Dolby Lab Licensing Corp | Mehrkanal-audiodecodierung |
EP1771855B1 (en) * | 2004-07-30 | 2007-12-19 | Thomson Licensing | Method for buffering audio data in optical disc systems in case of mechanical shocks or vibrations |
US7508947B2 (en) * | 2004-08-03 | 2009-03-24 | Dolby Laboratories Licensing Corporation | Method for combining audio signals using auditory scene analysis |
JP2006084754A (ja) * | 2004-09-16 | 2006-03-30 | Oki Electric Ind Co Ltd | 音声録音再生装置 |
US7630902B2 (en) * | 2004-09-17 | 2009-12-08 | Digital Rise Technology Co., Ltd. | Apparatus and methods for digital audio coding using codebook application ranges |
KR100750115B1 (ko) * | 2004-10-26 | 2007-08-21 | 삼성전자주식회사 | 오디오 신호 부호화 및 복호화 방법 및 그 장치 |
AU2006255662B2 (en) * | 2005-06-03 | 2012-08-23 | Dolby Laboratories Licensing Corporation | Apparatus and method for encoding audio signals with decoding instructions |
US7546240B2 (en) | 2005-07-15 | 2009-06-09 | Microsoft Corporation | Coding with improved time resolution for selected segments via adaptive block transformation of a group of samples from a subband decomposition |
US7630882B2 (en) * | 2005-07-15 | 2009-12-08 | Microsoft Corporation | Frequency segmentation to obtain bands for efficient coding of digital media |
US7562021B2 (en) | 2005-07-15 | 2009-07-14 | Microsoft Corporation | Modification of codewords in dictionary used for efficient coding of digital media spectral data |
TWI396188B (zh) * | 2005-08-02 | 2013-05-11 | Dolby Lab Licensing Corp | 依聆聽事件之函數控制空間音訊編碼參數的技術 |
US7917358B2 (en) * | 2005-09-30 | 2011-03-29 | Apple Inc. | Transient detection by power weighted average |
DE102006049154B4 (de) * | 2006-10-18 | 2009-07-09 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Kodierung eines Informationssignals |
WO2008153944A1 (en) * | 2007-06-08 | 2008-12-18 | Dolby Laboratories Licensing Corporation | Hybrid derivation of surround sound audio channels by controllably combining ambience and matrix-decoded signal components |
US7761290B2 (en) * | 2007-06-15 | 2010-07-20 | Microsoft Corporation | Flexible frequency and time partitioning in perceptual transform coding of audio |
US8046214B2 (en) | 2007-06-22 | 2011-10-25 | Microsoft Corporation | Low complexity decoder for complex transform coding of multi-channel sound |
US7885819B2 (en) * | 2007-06-29 | 2011-02-08 | Microsoft Corporation | Bitstream syntax for multi-process audio decoding |
CN101790756B (zh) * | 2007-08-27 | 2012-09-05 | 爱立信电话股份有限公司 | 瞬态检测器以及用于支持音频信号的编码的方法 |
US8249883B2 (en) * | 2007-10-26 | 2012-08-21 | Microsoft Corporation | Channel extension coding for multi-channel source |
JP5328804B2 (ja) * | 2007-12-21 | 2013-10-30 | フランス・テレコム | 適応型ウィンドウを有する変換ベースの符号化/復号化 |
ES2739667T3 (es) * | 2008-03-10 | 2020-02-03 | Fraunhofer Ges Forschung | Dispositivo y método para manipular una señal de audio que tiene un evento transitorio |
JP2010017216A (ja) * | 2008-07-08 | 2010-01-28 | Ge Medical Systems Global Technology Co Llc | 音声データ処理装置,音声データ処理方法、および、イメージング装置 |
MY154452A (en) | 2008-07-11 | 2015-06-15 | Fraunhofer Ges Forschung | An apparatus and a method for decoding an encoded audio signal |
EP2410522B1 (en) | 2008-07-11 | 2017-10-04 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Audio signal encoder, method for encoding an audio signal and computer program |
US8380498B2 (en) * | 2008-09-06 | 2013-02-19 | GH Innovation, Inc. | Temporal envelope coding of energy attack signal by using attack point location |
US9384748B2 (en) * | 2008-11-26 | 2016-07-05 | Electronics And Telecommunications Research Institute | Unified Speech/Audio Codec (USAC) processing windows sequence based mode switching |
CN101770776B (zh) * | 2008-12-29 | 2011-06-08 | 华为技术有限公司 | 瞬态信号的编码方法和装置、解码方法和装置及处理系统 |
EP2214165A3 (en) * | 2009-01-30 | 2010-09-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus, method and computer program for manipulating an audio signal comprising a transient event |
US8554348B2 (en) * | 2009-07-20 | 2013-10-08 | Apple Inc. | Transient detection using a digital audio workstation |
US8153882B2 (en) * | 2009-07-20 | 2012-04-10 | Apple Inc. | Time compression/expansion of selected audio segments in an audio file |
KR100940532B1 (ko) | 2009-09-28 | 2010-02-10 | 삼성전자주식회사 | 저비트율 복호화방법 및 장치 |
TWI557723B (zh) | 2010-02-18 | 2016-11-11 | 杜比實驗室特許公司 | 解碼方法及系統 |
EP2372703A1 (en) * | 2010-03-11 | 2011-10-05 | Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. | Signal processor, window provider, encoded media signal, method for processing a signal and method for providing a window |
CN102222505B (zh) * | 2010-04-13 | 2012-12-19 | 中兴通讯股份有限公司 | 可分层音频编解码方法系统及瞬态信号可分层编解码方法 |
FR2961938B1 (fr) * | 2010-06-25 | 2013-03-01 | Inst Nat Rech Inf Automat | Synthetiseur numerique audio ameliore |
EP2612321B1 (en) | 2010-09-28 | 2016-01-06 | Huawei Technologies Co., Ltd. | Device and method for postprocessing decoded multi-channel audio signal or decoded stereo signal |
WO2012040897A1 (en) | 2010-09-28 | 2012-04-05 | Huawei Technologies Co., Ltd. | Device and method for postprocessing decoded multi-channel audio signal or decoded stereo signal |
WO2013075753A1 (en) * | 2011-11-25 | 2013-05-30 | Huawei Technologies Co., Ltd. | An apparatus and a method for encoding an input signal |
EP2828854B1 (en) | 2012-03-23 | 2016-03-16 | Dolby Laboratories Licensing Corporation | Hierarchical active voice detection |
CA2900437C (en) | 2013-02-20 | 2020-07-21 | Christian Helmrich | Apparatus and method for encoding or decoding an audio signal using a transient-location dependent overlap |
US20150179181A1 (en) * | 2013-12-20 | 2015-06-25 | Microsoft Corporation | Adapting audio based upon detected environmental accoustics |
US10200134B2 (en) * | 2014-02-10 | 2019-02-05 | Audimax, Llc | Communications systems, methods and devices having improved noise immunity |
PL232466B1 (pl) * | 2015-01-19 | 2019-06-28 | Zylia Spolka Z Ograniczona Odpowiedzialnoscia | Sposób kodowania, sposób dekodowania, koder oraz dekoder sygnału audio |
EP3382700A1 (en) * | 2017-03-31 | 2018-10-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus and method for post-processing an audio signal using a transient location detection |
US10726851B2 (en) * | 2017-08-31 | 2020-07-28 | Sony Interactive Entertainment Inc. | Low latency audio stream acceleration by selectively dropping and blending audio blocks |
Family Cites Families (63)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4624009A (en) * | 1980-05-02 | 1986-11-18 | Figgie International, Inc. | Signal pattern encoder and classifier |
US4464784A (en) * | 1981-04-30 | 1984-08-07 | Eventide Clockworks, Inc. | Pitch changer with glitch minimizer |
US4723290A (en) * | 1983-05-16 | 1988-02-02 | Kabushiki Kaisha Toshiba | Speech recognition apparatus |
US4792975A (en) * | 1983-06-03 | 1988-12-20 | The Variable Speech Control ("Vsc") | Digital speech signal processing for pitch change with jump control in accordance with pitch period |
US4700391A (en) * | 1983-06-03 | 1987-10-13 | The Variable Speech Control Company ("Vsc") | Method and apparatus for pitch controlled voice signal processing |
US5202761A (en) * | 1984-11-26 | 1993-04-13 | Cooper J Carl | Audio synchronization apparatus |
USRE33535E (en) * | 1985-09-16 | 1991-02-12 | Audio to video timing equalizer method and apparatus | |
US4703355A (en) * | 1985-09-16 | 1987-10-27 | Cooper J Carl | Audio to video timing equalizer method and apparatus |
US5040081A (en) * | 1986-09-23 | 1991-08-13 | Mccutchen David | Audiovisual synchronization signal generator using audio signature comparison |
US4852170A (en) * | 1986-12-18 | 1989-07-25 | R & D Associates | Real time computer speech recognition system |
JPS63225300A (ja) * | 1987-03-16 | 1988-09-20 | 株式会社東芝 | パタ−ン認識装置 |
GB8720527D0 (en) * | 1987-09-01 | 1987-10-07 | King R A | Voice recognition |
US5055939A (en) | 1987-12-15 | 1991-10-08 | Karamon John J | Method system & apparatus for synchronizing an auxiliary sound source containing multiple language channels with motion picture film video tape or other picture source containing a sound track |
IL84902A (en) * | 1987-12-21 | 1991-12-15 | D S P Group Israel Ltd | Digital autocorrelation system for detecting speech in noisy audio signal |
JP2739950B2 (ja) * | 1988-03-31 | 1998-04-15 | 株式会社東芝 | パターン認識装置 |
WO1991019989A1 (en) | 1990-06-21 | 1991-12-26 | Reynolds Software, Inc. | Method and apparatus for wave analysis and event recognition |
US5313531A (en) * | 1990-11-05 | 1994-05-17 | International Business Machines Corporation | Method and apparatus for speech analysis and speech recognition |
US5216744A (en) * | 1991-03-21 | 1993-06-01 | Dictaphone Corporation | Time scale modification of speech signals |
FR2674710B1 (fr) * | 1991-03-27 | 1994-11-04 | France Telecom | Procede et systeme de traitement des preechos d'un signal audio-numerique code par transformee frequentielle. |
JP3134338B2 (ja) * | 1991-03-30 | 2001-02-13 | ソニー株式会社 | ディジタル音声信号符号化方法 |
US5175769A (en) | 1991-07-23 | 1992-12-29 | Rolm Systems | Method for time-scale modification of signals |
US5450522A (en) * | 1991-08-19 | 1995-09-12 | U S West Advanced Technologies, Inc. | Auditory model for parametrization of speech |
US5621857A (en) * | 1991-12-20 | 1997-04-15 | Oregon Graduate Institute Of Science And Technology | Method and system for identifying and recognizing speech |
JP3104400B2 (ja) * | 1992-04-27 | 2000-10-30 | ソニー株式会社 | オーディオ信号符号化装置及び方法 |
US5630013A (en) | 1993-01-25 | 1997-05-13 | Matsushita Electric Industrial Co., Ltd. | Method of and apparatus for performing time-scale modification of speech signals |
KR100372208B1 (ko) * | 1993-09-09 | 2003-04-07 | 산요 덴키 가부시키가이샤 | 음성신호의시간축압축/신장방법 |
JP3186412B2 (ja) * | 1994-04-01 | 2001-07-11 | ソニー株式会社 | 情報符号化方法、情報復号化方法、及び情報伝送方法 |
JPH0863194A (ja) * | 1994-08-23 | 1996-03-08 | Hitachi Denshi Ltd | 残差駆動形線形予測方式ボコーダ |
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 |
US5920840A (en) | 1995-02-28 | 1999-07-06 | Motorola, Inc. | Communication system and method using a speaker dependent time-scaling technique |
US5730140A (en) * | 1995-04-28 | 1998-03-24 | Fitch; William Tecumseh S. | Sonification system using synthesized realistic body sounds modified by other medically-important variables for physiological monitoring |
US5699404A (en) | 1995-06-26 | 1997-12-16 | Motorola, Inc. | Apparatus for time-scaling in communication products |
US6002776A (en) * | 1995-09-18 | 1999-12-14 | Interval Research Corporation | Directional acoustic signal processor and method therefor |
FR2739736B1 (fr) * | 1995-10-05 | 1997-12-05 | Jean Laroche | Procede de reduction des pre-echos ou post-echos affectant des enregistrements audio |
US5960390A (en) * | 1995-10-05 | 1999-09-28 | Sony Corporation | Coding method for using multi channel audio signals |
DE69612958T2 (de) * | 1995-11-22 | 2001-11-29 | Koninkl Philips Electronics Nv | Verfahren und vorrichtung zur resynthetisierung eines sprachsignals |
US5749073A (en) * | 1996-03-15 | 1998-05-05 | Interval Research Corporation | System for automatically morphing audio information |
US5828994A (en) * | 1996-06-05 | 1998-10-27 | Interval Research Corporation | Non-uniform time scale modification of recorded audio |
JPH1074097A (ja) | 1996-07-26 | 1998-03-17 | Ind Technol Res Inst | オーディオ信号のパラメータを変更する方法及び装置 |
US6049766A (en) | 1996-11-07 | 2000-04-11 | Creative Technology Ltd. | Time-domain time/pitch scaling of speech or audio signals with transient handling |
US5893062A (en) * | 1996-12-05 | 1999-04-06 | Interval Research Corporation | Variable rate video playback with synchronized audio |
DE19710545C1 (de) | 1997-03-14 | 1997-12-04 | Grundig Ag | Effizientes Verfahren zur Geschwindigkeitsmodifikation von Sprachsignalen |
US6211919B1 (en) * | 1997-03-28 | 2001-04-03 | Tektronix, Inc. | Transparent embedment of data in a video signal |
TW357335B (en) * | 1997-10-08 | 1999-05-01 | Winbond Electronics Corp | Apparatus and method for variation of tone of digital audio signals |
EP0976125B1 (en) | 1997-12-19 | 2004-03-24 | Koninklijke Philips Electronics N.V. | Removing periodicity from a lengthened audio signal |
US6266003B1 (en) * | 1998-08-28 | 2001-07-24 | Sigma Audio Research Limited | Method and apparatus for signal processing for time-scale and/or pitch modification of audio signals |
US6266644B1 (en) * | 1998-09-26 | 2001-07-24 | Liquid Audio, Inc. | Audio encoding apparatus and methods |
US6374225B1 (en) * | 1998-10-09 | 2002-04-16 | Enounce, Incorporated | Method and apparatus to prepare listener-interest-filtered works |
SE9903552D0 (sv) * | 1999-01-27 | 1999-10-01 | Lars Liljeryd | Efficient spectral envelope coding using dynamic scalefactor grouping and time/frequency switching |
JP3430968B2 (ja) * | 1999-05-06 | 2003-07-28 | ヤマハ株式会社 | ディジタル信号の時間軸圧伸方法及び装置 |
JP3430974B2 (ja) * | 1999-06-22 | 2003-07-28 | ヤマハ株式会社 | ステレオ信号の時間軸圧伸方法及び装置 |
US6505153B1 (en) * | 2000-05-22 | 2003-01-07 | Compaq Information Technologies Group, L.P. | Efficient method for producing off-line closed captions |
JP2004513557A (ja) * | 2000-11-03 | 2004-04-30 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | オーディオ信号のパラメトリック符号化方法及び装置 |
US20020116178A1 (en) * | 2001-04-13 | 2002-08-22 | Crockett Brett G. | High quality time-scaling and pitch-scaling of audio signals |
CN1279511C (zh) | 2001-04-13 | 2006-10-11 | 多尔拜实验特许公司 | 一种时间标度和/或音调偏移一个音频信号的方法 |
US7711123B2 (en) * | 2001-04-13 | 2010-05-04 | Dolby Laboratories Licensing Corporation | Segmenting audio signals into auditory events |
US7461002B2 (en) * | 2001-04-13 | 2008-12-02 | Dolby Laboratories Licensing Corporation | Method for time aligning audio signals using characterizations based on auditory events |
US7283954B2 (en) * | 2001-04-13 | 2007-10-16 | Dolby Laboratories Licensing Corporation | Comparing audio using characterizations based on auditory events |
WO2002093560A1 (en) | 2001-05-10 | 2002-11-21 | Dolby Laboratories Licensing Corporation | Improving transient performance of low bit rate audio coding systems by reducing pre-noise |
MXPA03010749A (es) | 2001-05-25 | 2004-07-01 | Dolby Lab Licensing Corp | Comparacion de audio usando caracterizaciones basadas en eventos auditivos. |
MXPA03010750A (es) | 2001-05-25 | 2004-07-01 | Dolby Lab Licensing Corp | Metodo para la alineacion temporal de senales de audio usando caracterizaciones basadas en eventos auditivos. |
US7346667B2 (en) | 2001-05-31 | 2008-03-18 | Ubs Ag | System for delivering dynamic content |
US20040122772A1 (en) * | 2002-12-18 | 2004-06-24 | International Business Machines Corporation | Method, system and program product for protecting privacy |
-
2002
- 2002-04-25 WO PCT/US2002/012957 patent/WO2002093560A1/en active IP Right Grant
- 2002-04-25 MX MXPA03010237A patent/MXPA03010237A/es active IP Right Grant
- 2002-04-25 US US10/476,347 patent/US7313519B2/en active Active
- 2002-04-25 DE DE60225130T patent/DE60225130T2/de not_active Expired - Lifetime
- 2002-04-25 EP EP02769666A patent/EP1386312B1/en not_active Expired - Lifetime
- 2002-04-25 KR KR1020037014462A patent/KR100945673B1/ko active IP Right Grant
- 2002-04-25 JP JP2002590350A patent/JP4290997B2/ja not_active Expired - Lifetime
- 2002-04-25 DK DK02769666T patent/DK1386312T3/da active
- 2002-04-25 ES ES02769666T patent/ES2298394T3/es not_active Expired - Lifetime
- 2002-04-25 AU AU2002307533A patent/AU2002307533B2/en not_active Expired
- 2002-04-25 CN CNB028095421A patent/CN1312662C/zh not_active Expired - Lifetime
- 2002-04-25 CA CA2445480A patent/CA2445480C/en not_active Expired - Lifetime
- 2002-04-25 AT AT02769666T patent/ATE387000T1/de active
-
2005
- 2005-04-08 HK HK05102947A patent/HK1070457A1/xx not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101308655B (zh) * | 2007-05-16 | 2011-07-06 | 展讯通信(上海)有限公司 | 一种音频编解码方法与装置 |
WO2008141579A1 (fr) * | 2007-05-17 | 2008-11-27 | Spreadtrum Communications (Shanghai) Co., Ltd. | Procédé de codage et de décodage de signal audio transitoire |
WO2009092309A1 (zh) * | 2008-01-16 | 2009-07-30 | Huawei Technologies Co., Ltd. | 一种量化噪声泄漏控制方法及装置 |
Also Published As
Publication number | Publication date |
---|---|
HK1070457A1 (en) | 2005-06-17 |
AU2002307533B2 (en) | 2008-01-31 |
US20040133423A1 (en) | 2004-07-08 |
JP2004528597A (ja) | 2004-09-16 |
ES2298394T3 (es) | 2008-05-16 |
US7313519B2 (en) | 2007-12-25 |
JP4290997B2 (ja) | 2009-07-08 |
ATE387000T1 (de) | 2008-03-15 |
DE60225130D1 (de) | 2008-04-03 |
CN1312662C (zh) | 2007-04-25 |
DE60225130T2 (de) | 2009-02-26 |
WO2002093560A1 (en) | 2002-11-21 |
EP1386312B1 (en) | 2008-02-20 |
KR100945673B1 (ko) | 2010-03-05 |
KR20040034604A (ko) | 2004-04-28 |
EP1386312A1 (en) | 2004-02-04 |
CA2445480A1 (en) | 2002-11-21 |
MXPA03010237A (es) | 2004-03-16 |
DK1386312T3 (da) | 2008-06-09 |
CA2445480C (en) | 2011-04-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1552060A (zh) | 通过降低前噪声改善低比特速率音频编码系统的瞬时性能 | |
CN1199179C (zh) | 在帧边界处衰减频谱邻频干扰的音频编码 | |
US7610205B2 (en) | High quality time-scaling and pitch-scaling of audio signals | |
RU2393552C2 (ru) | Комбинированное аудиокодирование, минимизирующее воспринимаемое искажение | |
RU2262748C2 (ru) | Многорежимное устройство кодирования | |
EP1377967B1 (en) | High quality time-scaling and pitch-scaling of audio signals | |
CN1153191C (zh) | 高质量音频的可缩放编码方法 | |
CN1055585C (zh) | 代码激励线性预测编码器和译码器 | |
CN1030129C (zh) | 高效数字数据编码和译码装置 | |
CN1099777C (zh) | 数字信号的编码装置、解码装置和编码方法 | |
CN1113492C (zh) | 发送接收装置 | |
CN1256715C (zh) | 编码方法、编码装置、解码方法、和解码装置 | |
CN1281006C (zh) | 信息编码/译码方法和装置和信息传输方法 | |
CN1144179C (zh) | 声音信号解码方法和装置、声音信号编码方法和装置 | |
CN1992533A (zh) | 信号编码设备和方法、信号译码设备和方法、程序及介质 | |
CN1708787A (zh) | 用于使用高级心理声学模型来对数字音频编码的方法及其设备 | |
CN1152164A (zh) | 码激励线性预测编码装置 | |
CN1312977A (zh) | 可升级的音频编码器和解码器 | |
CN1276903A (zh) | 采用附加的滤波器阵列在帧边界处衰减混叠伪差的基于帧的音频编码 | |
FI118704B (fi) | Menetelmä ja laite lähdekoodauksen tekemiseksi | |
CN1249669C (zh) | 使用时间频率相关编码和/或解码数字音频的方法及装置 | |
Atal et al. | Code-excited linear prediction (CELP): high quality speech at very low bit rates | |
CN1193159A (zh) | 语音编码译码方法和装置、电话装置、音调变换方法和介质 | |
CN1201492C (zh) | 编码、解码装置及方法,记录、再现装置及方法,记录媒体 | |
CN1139805A (zh) | 数据记录方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1070457 Country of ref document: HK |
|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Guangzhou Panyu Juda Car Audio Equipment Co., Ltd. Assignor: Dolby Lab Licensing Corp. Contract record no.: 2010990000986 Denomination of invention: Improving transient performance of low bit rate audio coding systems by reducing pre-noise Granted publication date: 20070425 License type: Common License Open date: 20041201 Record date: 20101216 |
|
EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang BeresonTechnology Co., Ltd. Assignor: Dolby Lab Licensing Corp. Contract record no.: 2011990000044 Denomination of invention: Improving transient performance of low bit rate audio coding systems by reducing pre-noise Granted publication date: 20070425 License type: Common License Open date: 20041201 Record date: 20110117 |
|
EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Guangzhou Panyu Juda Car Audio Equipment Co., Ltd. Assignor: Dolby Lab Licensing Corp. Contract record no.: 2011990000899 Denomination of invention: Improving transient performance of low bit rate audio coding systems by reducing pre-noise Granted publication date: 20070425 License type: Common License Open date: 20041201 Record date: 20110915 |
|
EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Desai Video-Audio Science & Technology Co., Ltd., Huizhou City Assignor: Dolby Lab Licensing Corp. Contract record no.: 2011990000968 Denomination of invention: Improving transient performance of low bit rate audio coding systems by reducing pre-noise Granted publication date: 20070425 License type: Common License Open date: 20041201 Record date: 20111012 |
|
EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Guangdong OPPO Mobile Communications Co., Ltd. Assignor: Dolby Lab Licensing Corp. Contract record no.: 2012990000215 Denomination of invention: Improving transient performance of low bit rate audio coding systems by reducing pre-noise Granted publication date: 20070425 License type: Common License Open date: 20041201 Record date: 20120411 |
|
EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Qingdao Haier Electric Appliance Co., Ltd. Assignor: Dolby Laboratories Licensing Corp,|Dolby International AB Contract record no.: 2012990000481 Denomination of invention: Improving transient performance of low bit rate audio coding systems by reducing pre-noise Granted publication date: 20070425 License type: Common License Open date: 20041201 Record date: 20120706 |
|
EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20041201 Assignee: Sony (China) Co., Ltd. Assignor: Sony Corp. Contract record no.: 2012990000568 Denomination of invention: Improving transient performance of low bit rate audio coding systems by reducing pre-noise Granted publication date: 20070425 License type: Common License Record date: 20120806 |
|
EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20041201 Assignee: Lenovo Mobile Communication Technology Ltd. Assignor: Dolby Laboratories Licensing Corp,|Dolby International AB Contract record no.: 2012990000858 Denomination of invention: Improving transient performance of low bit rate audio coding systems by reducing pre-noise Granted publication date: 20070425 License type: Common License Record date: 20121129 |
|
LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20041201 Assignee: Lenovo (Beijing) Co., Ltd. Assignor: Dolby Laboratories Licensing Corp,|Dolby International AB Contract record no.: 2013990000005 Denomination of invention: Improving transient performance of low bit rate audio coding systems by reducing pre-noise Granted publication date: 20070425 License type: Common License Record date: 20130106 |
|
LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20041201 Assignee: Beijing millet Communication Technology Co., Ltd. Assignor: Dolby Laboratories Licensing Corp,|Dolby International AB Contract record no.: 2013990000048 Denomination of invention: Improving transient performance of low bit rate audio coding systems by reducing pre-noise Granted publication date: 20070425 License type: Common License Record date: 20130206 |
|
LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20041201 Assignee: Shenzhen Maxmade Technology Co.,Ltd. Assignor: Dolby Lab Licensing Corp. Contract record no.: 2013990000353 Denomination of invention: Improving transient performance of low bit rate audio coding systems by reducing pre-noise Granted publication date: 20070425 License type: Common License Record date: 20130627 Application publication date: 20041201 Assignee: Beijing Chaoge Digital Technology Co., Ltd. Assignor: Dolby Lab Licensing Corp. Contract record no.: 2013990000354 Denomination of invention: Improving transient performance of low bit rate audio coding systems by reducing pre-noise Granted publication date: 20070425 License type: Common License Record date: 20130627 |
|
LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20041201 Assignee: Sony (China) Co., Ltd. Assignor: Sony Corp. Contract record no.: 2012990000568 Denomination of invention: Improving transient performance of low bit rate audio coding systems by reducing pre-noise Granted publication date: 20070425 License type: Common License Record date: 20120806 |
|
LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
CX01 | Expiry of patent term |
Granted publication date: 20070425 |
|
CX01 | Expiry of patent term |