ES2096481T3 - Asignacion binaria adaptable eficaz desde el punto de vista del calculo para metodo y aparato codificador. - Google Patents
Asignacion binaria adaptable eficaz desde el punto de vista del calculo para metodo y aparato codificador.Info
- Publication number
- ES2096481T3 ES2096481T3 ES94922585T ES94922585T ES2096481T3 ES 2096481 T3 ES2096481 T3 ES 2096481T3 ES 94922585 T ES94922585 T ES 94922585T ES 94922585 T ES94922585 T ES 94922585T ES 2096481 T3 ES2096481 T3 ES 2096481T3
- Authority
- ES
- Spain
- Prior art keywords
- allocation
- function
- subband signals
- values
- psychoacoustic
- 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.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
- H04B1/665—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using psychoacoustic properties of the ear, e.g. masking effect
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
- H04B1/667—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using a division in frequency subbands
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
LA INVENCION SE REFIERE A MODELOS PERCEPTUALES SOFISTICADOS DE ALTO RENDIMIENTO COMPUTACIONAL QUE PUEDEN CONSTITUIR UNA BASE PARA LA DISTRIBUCION DE BITS Y CUANTIFICACION ADAPTABLES DE LA INFORMACION CODIFICADA UTILES EN SISTEMAS DE CODIFICACION A BAJA VELOCIDAD DE TRAFICO DE BITS DE ALTA CALIDAD. EN UN ASPECTO DE LA INVENCION, UN CODIFICADOR DE BANDA DIVIDIDA DE AUDIO DIVIDE UNA SEÑAL DE ENTRADA EN SEÑALES DE SUBBANDA DE FRECUENCIA, CUANTIFICA LAS SEÑALES DE SUBBANDA SEGUN LOS VALORES ESTABILIZADOS POR UNA FUNCION DE DISTRIBUCION Y AGRUPA LAS SEÑALES DE SUBBANDA CUANTIFICADAS EN UNA SEÑAL CODIFICADA. LA FUNCION DE DISTRIBUCION ESTABLECE VALORES DE DISTRIBUCION SEGUN UNOS PRINCIPIOS PSICOACUSTICOS BASADOS EN UN UMBRAL DE ENMASCARAMIENTO. EL UMBRAL DE ENMASCARAMIENTO SE ESTABLECE ESTIMANDO LA DENSIDAD ESPECTRAL DE POTENCIA (PSD) DE LA SEÑAL DE ENTRADA, GENERANDO UN PATRON DE EXCITACION MEDIANTE LA APLICACION DE UNA FUNCION DE PROPAGACION A LA PSD, AJUSTANDO EL PATRON DE EXCITACION EN UNA CANTIDAD IGUAL A LA RELACION SEÑAL A RUIDO (SNR) DESPLAZADA LO SUFICIENTE COMO PARA CONSEGUIR UN ENMASCARAMIENTO PSICOACUSTICO, COMPARANDO EL NIVEL DEL PATRON AJUSTADO CON EL UMBRAL DE ESCUCHA Y GENERANDO UN UMBRAL DE ENMASCARAMIENTO QUE SEA IGUAL AL MAYOR DE LOS DOS. LA FUNCION DE PROPAGACION SE PUEDE LLEVAR A CABO APLICANDO UNO O MAS FILTROS NO RECURSIVOS A LA PSD DE LA SEÑAL DE ENTRADA. EN SISTEMAS DE CODIFICACION ADAPTABLE HACIA ADELANTE, LOS VALORES DE DISTRIBUCION SON TRANSFERIDOS EXPLICITAMENTE A UN DECODIFICADOR MEDIANTE LA INFORMACION AGRUPADA EN LA SEÑAL CODIFICADA. EN SISTEMAS DE CODIFICACION ADAPTABLE HACIA ATRAS, LOS VALORES DE DISTRIBUCION SON TRANSFERIDOS IMPLICITAMENTE A UN DECODIFICADOR MEDIANTE LA INFORMACION AGRUPADA EN LA SEÑAL CODIFICADA DE LA QUE UNA FUNCION DE DISTRIBUCION DEL DECODIFICADOR PUEDE DERIVAR LOS VALORES DE DISTRIBUCION. EN SISTEMAS DE CODIFICACION ADAPTABLE HIBRIDA, LOS VALORES DE DISTRIBUCION BASICOS SON TRANSFERIDOS IMPLICITAMENTE CON LOS VALORES DE DISTRIBUCION MODIFICADOS TRANSFERIDOS EXPLICITAMENTE.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US9226993A | 1993-07-16 | 1993-07-16 | |
US08/145,975 US5632003A (en) | 1993-07-16 | 1993-11-01 | Computationally efficient adaptive bit allocation for coding method and apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2096481T3 true ES2096481T3 (es) | 1997-03-01 |
Family
ID=26785469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES94922585T Expired - Lifetime ES2096481T3 (es) | 1993-07-16 | 1994-07-18 | Asignacion binaria adaptable eficaz desde el punto de vista del calculo para metodo y aparato codificador. |
Country Status (10)
Country | Link |
---|---|
US (1) | US5623577A (es) |
EP (1) | EP0709005B1 (es) |
JP (1) | JP3297051B2 (es) |
AT (1) | ATE147909T1 (es) |
AU (1) | AU694131B2 (es) |
CA (1) | CA2166551C (es) |
DE (1) | DE69401514T2 (es) |
DK (1) | DK0709005T3 (es) |
ES (1) | ES2096481T3 (es) |
WO (1) | WO1995002930A1 (es) |
Families Citing this family (75)
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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 |
US6263307B1 (en) | 1995-04-19 | 2001-07-17 | Texas Instruments Incorporated | Adaptive weiner filtering using line spectral frequencies |
WO1996035269A1 (en) * | 1995-05-03 | 1996-11-07 | Sony Corporation | Non-linearly quantizing an information signal |
US5960390A (en) * | 1995-10-05 | 1999-09-28 | Sony Corporation | Coding method for using multi channel audio signals |
JPH09148937A (ja) * | 1995-11-21 | 1997-06-06 | Sony Corp | 符号化処理方法、復号化処理方法、符号化処理装置および復号化処理装置 |
US5825320A (en) * | 1996-03-19 | 1998-10-20 | Sony Corporation | Gain control method for audio encoding device |
GB9700854D0 (en) * | 1997-01-16 | 1997-03-05 | Scient Generics Ltd | Sub-audible acoustic data transmission mechanism |
FR2768547B1 (fr) | 1997-09-18 | 1999-11-19 | Matra Communication | Procede de debruitage d'un signal de parole numerique |
US5899969A (en) * | 1997-10-17 | 1999-05-04 | Dolby Laboratories Licensing Corporation | Frame-based audio coding with gain-control words |
US5913191A (en) * | 1997-10-17 | 1999-06-15 | Dolby Laboratories Licensing Corporation | Frame-based audio coding with additional filterbank to suppress aliasing artifacts at frame boundaries |
US5903872A (en) * | 1997-10-17 | 1999-05-11 | Dolby Laboratories Licensing Corporation | Frame-based audio coding with additional filterbank to attenuate spectral splatter at frame boundaries |
US6092040A (en) * | 1997-11-21 | 2000-07-18 | Voran; Stephen | Audio signal time offset estimation algorithm and measuring normalizing block algorithms for the perceptually-consistent comparison of speech signals |
EP1060573B1 (en) * | 1998-01-12 | 2002-09-18 | STMicroelectronics Asia Pacific Pte Ltd. | Method and apparatus for spectral exponent reshaping in a transform coder for high quality audio |
JPH11234136A (ja) * | 1998-02-19 | 1999-08-27 | Sanyo Electric Co Ltd | デジタルデータの符号化方法及び符号化装置 |
US6128593A (en) * | 1998-08-04 | 2000-10-03 | Sony Corporation | System and method for implementing a refined psycho-acoustic modeler |
US6363338B1 (en) * | 1999-04-12 | 2002-03-26 | Dolby Laboratories Licensing Corporation | Quantization in perceptual audio coders with compensation for synthesis filter noise spreading |
US6246345B1 (en) * | 1999-04-16 | 2001-06-12 | Dolby Laboratories Licensing Corporation | Using gain-adaptive quantization and non-uniform symbol lengths for improved audio coding |
DE19947877C2 (de) * | 1999-10-05 | 2001-09-13 | Fraunhofer Ges Forschung | Verfahren und Vorrichtung zum Einbringen von Informationen in einen Datenstrom sowie Verfahren und Vorrichtung zum Codieren eines Audiosignals |
DE69932861T2 (de) * | 1999-10-30 | 2007-03-15 | Stmicroelectronics Asia Pacific Pte Ltd. | Verfahren zur kodierung eines audiosignals mit einem qualitätswert für bit-zuordnung |
US7742927B2 (en) * | 2000-04-18 | 2010-06-22 | France Telecom | Spectral enhancing method and device |
US6778953B1 (en) * | 2000-06-02 | 2004-08-17 | Agere Systems Inc. | Method and apparatus for representing masked thresholds in a perceptual audio coder |
US6647365B1 (en) * | 2000-06-02 | 2003-11-11 | Lucent Technologies Inc. | Method and apparatus for detecting noise-like signal components |
US7110953B1 (en) * | 2000-06-02 | 2006-09-19 | Agere Systems Inc. | Perceptual coding of audio signals using separated irrelevancy reduction and redundancy reduction |
JP3576935B2 (ja) * | 2000-07-21 | 2004-10-13 | 株式会社ケンウッド | 周波数間引き装置、周波数間引き方法及び記録媒体 |
US6915264B2 (en) * | 2001-02-22 | 2005-07-05 | Lucent Technologies Inc. | Cochlear filter bank structure for determining masked thresholds for use in perceptual audio coding |
AUPR433901A0 (en) * | 2001-04-10 | 2001-05-17 | Lake Technology Limited | High frequency signal construction method |
JP2002330075A (ja) * | 2001-05-07 | 2002-11-15 | Matsushita Electric Ind Co Ltd | サブバンドadpcm符号化方法、復号方法、サブバンドadpcm符号化装置、復号装置およびワイヤレスマイクロホン送信システム、受信システム |
US7206739B2 (en) * | 2001-05-23 | 2007-04-17 | Samsung Electronics Co., Ltd. | Excitation codebook search method in a speech coding system |
US7062429B2 (en) * | 2001-09-07 | 2006-06-13 | Agere Systems Inc. | Distortion-based method and apparatus for buffer control in a communication system |
US7333929B1 (en) | 2001-09-13 | 2008-02-19 | Chmounk Dmitri V | Modular scalable compressed audio data stream |
US7177803B2 (en) * | 2001-10-22 | 2007-02-13 | Motorola, Inc. | Method and apparatus for enhancing loudness of an audio signal |
US6950794B1 (en) * | 2001-11-20 | 2005-09-27 | Cirrus Logic, Inc. | Feedforward prediction of scalefactors based on allowable distortion for noise shaping in psychoacoustic-based compression |
US7240001B2 (en) * | 2001-12-14 | 2007-07-03 | Microsoft Corporation | Quality improvement techniques in an audio encoder |
US6934677B2 (en) | 2001-12-14 | 2005-08-23 | Microsoft Corporation | Quantization matrices based on critical band pattern information for digital audio wherein quantization bands differ from critical bands |
US7197083B2 (en) * | 2001-12-21 | 2007-03-27 | Intel Corporation | Creation of spectral windows through the use of high rate code words |
US20030187663A1 (en) | 2002-03-28 | 2003-10-02 | Truman Michael Mead | Broadband frequency translation for high frequency regeneration |
US7447631B2 (en) | 2002-06-17 | 2008-11-04 | Dolby Laboratories Licensing Corporation | Audio coding system using spectral hole filling |
TWI288915B (en) * | 2002-06-17 | 2007-10-21 | Dolby Lab Licensing Corp | Improved audio coding system using characteristics of a decoded signal to adapt synthesized spectral components |
US7502743B2 (en) * | 2002-09-04 | 2009-03-10 | Microsoft Corporation | Multi-channel audio encoding and decoding with multi-channel transform selection |
JP4676140B2 (ja) * | 2002-09-04 | 2011-04-27 | マイクロソフト コーポレーション | オーディオの量子化および逆量子化 |
US7299190B2 (en) | 2002-09-04 | 2007-11-20 | Microsoft Corporation | Quantization and inverse quantization for audio |
US7617100B1 (en) * | 2003-01-10 | 2009-11-10 | Nvidia Corporation | Method and system for providing an excitation-pattern based audio coding scheme |
KR100571824B1 (ko) * | 2003-11-26 | 2006-04-17 | 삼성전자주식회사 | 부가정보 삽입된 mpeg-4 오디오 bsac부호화/복호화 방법 및 장치 |
US7460990B2 (en) * | 2004-01-23 | 2008-12-02 | Microsoft Corporation | Efficient coding of digital media spectral data using wide-sense perceptual similarity |
DE102004009949B4 (de) * | 2004-03-01 | 2006-03-09 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zum Ermitteln eines Schätzwertes |
JP4734859B2 (ja) | 2004-06-28 | 2011-07-27 | ソニー株式会社 | 信号符号化装置及び方法、並びに信号復号装置及び方法 |
EP1782419A1 (en) * | 2004-08-17 | 2007-05-09 | Koninklijke Philips Electronics N.V. | Scalable audio coding |
TWI498882B (zh) * | 2004-08-25 | 2015-09-01 | Dolby Lab Licensing Corp | 音訊解碼器 |
US7676362B2 (en) * | 2004-12-31 | 2010-03-09 | Motorola, Inc. | Method and apparatus for enhancing loudness of a speech signal |
JP4800645B2 (ja) * | 2005-03-18 | 2011-10-26 | カシオ計算機株式会社 | 音声符号化装置、及び音声符号化方法 |
TWI397903B (zh) * | 2005-04-13 | 2013-06-01 | Dolby Lab Licensing Corp | 編碼音訊之節約音量測量技術 |
US8280730B2 (en) | 2005-05-25 | 2012-10-02 | Motorola Mobility Llc | Method and apparatus of increasing speech intelligibility in noisy environments |
US7548853B2 (en) * | 2005-06-17 | 2009-06-16 | Shmunk Dmitry V | Scalable compressed audio bit stream and codec using a hierarchical filterbank and multichannel joint coding |
US8190425B2 (en) * | 2006-01-20 | 2012-05-29 | Microsoft Corporation | Complex cross-correlation parameters for multi-channel audio |
US7831434B2 (en) * | 2006-01-20 | 2010-11-09 | Microsoft Corporation | Complex-transform channel coding with extended-band frequency coding |
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JP5096468B2 (ja) * | 2006-08-15 | 2012-12-12 | ドルビー ラボラトリーズ ライセンシング コーポレイション | サイド情報なしの時間的ノイズエンベロープの自由な整形 |
FR2912249A1 (fr) * | 2007-02-02 | 2008-08-08 | France Telecom | Codage/decodage perfectionnes de signaux audionumeriques. |
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EP2232700B1 (en) | 2007-12-21 | 2014-08-13 | Dts Llc | System for adjusting perceived loudness of audio signals |
CN102137326B (zh) * | 2008-04-18 | 2014-03-26 | 杜比实验室特许公司 | 用于保持多通道音频中的语音可听度的方法和设备 |
CN101425293B (zh) * | 2008-09-24 | 2011-06-08 | 天津大学 | 一种高效感知音频比特分配方法 |
TWI643187B (zh) | 2009-05-27 | 2018-12-01 | 瑞典商杜比國際公司 | 從訊號的低頻成份產生該訊號之高頻成份的系統與方法,及其機上盒、電腦程式產品、軟體程式及儲存媒體 |
US11657788B2 (en) | 2009-05-27 | 2023-05-23 | Dolby International Ab | Efficient combined harmonic transposition |
US8538042B2 (en) * | 2009-08-11 | 2013-09-17 | Dts Llc | System for increasing perceived loudness of speakers |
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US8958510B1 (en) * | 2010-06-10 | 2015-02-17 | Fredric J. Harris | Selectable bandwidth filter |
FR2973551A1 (fr) | 2011-03-29 | 2012-10-05 | France Telecom | Allocation par sous-bandes de bits de quantification de parametres d'information spatiale pour un codage parametrique |
CN102543090B (zh) * | 2011-12-31 | 2013-12-04 | 深圳市茂碧信息科技有限公司 | 一种应用于变速率语音和音频编码的码率自动控制*** |
US9312829B2 (en) | 2012-04-12 | 2016-04-12 | Dts Llc | System for adjusting loudness of audio signals in real time |
JP6113294B2 (ja) | 2012-11-07 | 2017-04-12 | ドルビー・インターナショナル・アーベー | 軽減された計算量の変換器snr計算 |
CN104937935A (zh) * | 2012-11-16 | 2015-09-23 | Vid拓展公司 | 用于视觉条件意识视频编码的感知预处理滤波器 |
KR101520938B1 (ko) * | 2013-04-26 | 2015-05-18 | 미디어젠(주) | 음량 크기의 통계적 특성을 이용한 음량측정방법 |
US10045050B2 (en) | 2014-04-25 | 2018-08-07 | Vid Scale, Inc. | Perceptual preprocessing filter for viewing-conditions-aware video coding |
JP6492915B2 (ja) * | 2015-04-15 | 2019-04-03 | 富士通株式会社 | 符号化装置、符号化方法、及びプログラム |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2002015C (en) * | 1988-12-30 | 1994-12-27 | Joseph Lindley Ii Hall | Perceptual coding of audio signals |
JP2906646B2 (ja) * | 1990-11-09 | 1999-06-21 | 松下電器産業株式会社 | 音声帯域分割符号化装置 |
JP3446216B2 (ja) * | 1992-03-06 | 2003-09-16 | ソニー株式会社 | 音声信号処理方法 |
-
1994
- 1994-01-28 US US08/190,655 patent/US5623577A/en not_active Expired - Lifetime
- 1994-07-18 AT AT94922585T patent/ATE147909T1/de active
- 1994-07-18 DK DK94922585.8T patent/DK0709005T3/da active
- 1994-07-18 DE DE69401514T patent/DE69401514T2/de not_active Expired - Lifetime
- 1994-07-18 WO PCT/US1994/008015 patent/WO1995002930A1/en active IP Right Grant
- 1994-07-18 JP JP50475395A patent/JP3297051B2/ja not_active Expired - Lifetime
- 1994-07-18 AU AU73642/94A patent/AU694131B2/en not_active Expired
- 1994-07-18 ES ES94922585T patent/ES2096481T3/es not_active Expired - Lifetime
- 1994-07-18 EP EP94922585A patent/EP0709005B1/en not_active Expired - Lifetime
- 1994-07-19 CA CA002166551A patent/CA2166551C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0709005B1 (en) | 1997-01-15 |
DE69401514T2 (de) | 1997-06-12 |
US5623577A (en) | 1997-04-22 |
AU7364294A (en) | 1995-02-13 |
AU694131B2 (en) | 1998-07-16 |
ATE147909T1 (de) | 1997-02-15 |
DE69401514D1 (de) | 1997-02-27 |
JPH09500503A (ja) | 1997-01-14 |
WO1995002930A1 (en) | 1995-01-26 |
CA2166551A1 (en) | 1995-01-26 |
JP3297051B2 (ja) | 2002-07-02 |
EP0709005A1 (en) | 1996-05-01 |
CA2166551C (en) | 2005-10-11 |
DK0709005T3 (da) | 1997-07-14 |
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