SE0004187D0 - Enhancing the performance of coding systems that use high frequency reconstruction methods - Google Patents

Enhancing the performance of coding systems that use high frequency reconstruction methods

Info

Publication number
SE0004187D0
SE0004187D0 SE0004187A SE0004187A SE0004187D0 SE 0004187 D0 SE0004187 D0 SE 0004187D0 SE 0004187 A SE0004187 A SE 0004187A SE 0004187 A SE0004187 A SE 0004187A SE 0004187 D0 SE0004187 D0 SE 0004187D0
Authority
SE
Sweden
Prior art keywords
frequency
audio signal
high frequency
crossover frequency
core encoder
Prior art date
Application number
SE0004187A
Other languages
English (en)
Swedish (sv)
Inventor
Fredrik Henn
Andreas Ehret
Michael Schug
Original Assignee
Coding Technologies Sweden Ab
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
Application filed by Coding Technologies Sweden Ab filed Critical Coding Technologies Sweden Ab
Priority to SE0004187A priority Critical patent/SE0004187D0/xx
Publication of SE0004187D0 publication Critical patent/SE0004187D0/xx
Priority to DK01983888T priority patent/DK1334484T3/da
Priority to DE60103424T priority patent/DE60103424T2/de
Priority to EP01983888A priority patent/EP1334484B1/en
Priority to AT01983888T priority patent/ATE267445T1/de
Priority to PT01983888T priority patent/PT1334484E/pt
Priority to JP2002543428A priority patent/JP3983668B2/ja
Priority to TR2004/01631T priority patent/TR200401631T4/xx
Priority to KR1020037006583A priority patent/KR100551862B1/ko
Priority to CNB018189725A priority patent/CN1232950C/zh
Priority to ES01983888T priority patent/ES2218462T3/es
Priority to AU2002215282A priority patent/AU2002215282A1/en
Priority to PCT/SE2001/002533 priority patent/WO2002041302A1/en
Priority to US09/987,657 priority patent/US7050972B2/en
Priority to HK03108655A priority patent/HK1058096A1/xx
Priority to JP2007142978A priority patent/JP4991397B2/ja
Priority to JP2011269144A priority patent/JP5933965B2/ja
Priority to JP2014002174A priority patent/JP6207404B2/ja
Priority to JP2016114496A priority patent/JP6368740B2/ja
Priority to JP2018129571A priority patent/JP6592148B2/ja

Links

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
    • 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
    • G10L19/04—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 predictive techniques
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Optical Communication System (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Transmitters (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
SE0004187A 2000-11-15 2000-11-15 Enhancing the performance of coding systems that use high frequency reconstruction methods SE0004187D0 (sv)

Priority Applications (20)

Application Number Priority Date Filing Date Title
SE0004187A SE0004187D0 (sv) 2000-11-15 2000-11-15 Enhancing the performance of coding systems that use high frequency reconstruction methods
PCT/SE2001/002533 WO2002041302A1 (en) 2000-11-15 2001-11-14 Enhancing the performance of coding systems that use high frequency reconstruction methods
KR1020037006583A KR100551862B1 (ko) 2000-11-15 2001-11-14 고주파 복원 방법을 이용하는 코딩 시스템의 성능 향상방법 및 시스템
ES01983888T ES2218462T3 (es) 2000-11-15 2001-11-14 Mejora del rendimiento de sistemas de cifrado que usan metodos de reconstruccion de alta frecuencia.
EP01983888A EP1334484B1 (en) 2000-11-15 2001-11-14 Enhancing the performance of coding systems that use high frequency reconstruction methods
AT01983888T ATE267445T1 (de) 2000-11-15 2001-11-14 Verbessern der leistung von kodierungssystemen, die hochfrequenz-rekonstruktionsverfahren verwenden
PT01983888T PT1334484E (pt) 2000-11-15 2001-11-14 Melhorar o desempenho de sistemas de codificacao que utilizam metodos de reconstrucao a altas frequencias
JP2002543428A JP3983668B2 (ja) 2000-11-15 2001-11-14 高周波数の再構成方法を使用するコーディング・システムの性能拡大方法
TR2004/01631T TR200401631T4 (tr) 2000-11-15 2001-11-14 Yüksek frekanslı yeniden yapılandırma yöntemlerini kullanan kodlama sistemlerinin performansının artırılması.
DK01983888T DK1334484T3 (da) 2000-11-15 2001-11-14 Forbedring af ydeevnen for kodesystemer, der anvender höjfrekvensrekonstruktionsfremgangsmåder
CNB018189725A CN1232950C (zh) 2000-11-15 2001-11-14 性能增强的使用高频重建方法的编码系统和方法
DE60103424T DE60103424T2 (de) 2000-11-15 2001-11-14 Verbessern der leistung von kodierungssystemen, die hochfrequenz-rekonstruktionsverfahren verwenden
AU2002215282A AU2002215282A1 (en) 2000-11-15 2001-11-14 Enhancing the performance of coding systems that use high frequency reconstruction methods
US09/987,657 US7050972B2 (en) 2000-11-15 2001-11-15 Enhancing the performance of coding systems that use high frequency reconstruction methods
HK03108655A HK1058096A1 (en) 2000-11-15 2003-11-27 Enhancing the performance of coding systems that use high frequency reconstruction methods.
JP2007142978A JP4991397B2 (ja) 2000-11-15 2007-05-30 高周波数の再構成方法を使用するコーディング・システムの性能拡大方法
JP2011269144A JP5933965B2 (ja) 2000-11-15 2011-12-08 高周波数の再構成方法を使用するコーディング・システムの性能拡大方法
JP2014002174A JP6207404B2 (ja) 2000-11-15 2014-01-09 高周波数の再構成方法を使用するコーディング・システムの性能拡大方法
JP2016114496A JP6368740B2 (ja) 2000-11-15 2016-06-08 高周波数の再構成方法を使用するコーディング・システムの性能拡大方法
JP2018129571A JP6592148B2 (ja) 2000-11-15 2018-07-09 高周波数の再構成方法を使用するコーディング・システムの性能拡大方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0004187A SE0004187D0 (sv) 2000-11-15 2000-11-15 Enhancing the performance of coding systems that use high frequency reconstruction methods

Publications (1)

Publication Number Publication Date
SE0004187D0 true SE0004187D0 (sv) 2000-11-15

Family

ID=20281835

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0004187A SE0004187D0 (sv) 2000-11-15 2000-11-15 Enhancing the performance of coding systems that use high frequency reconstruction methods

Country Status (15)

Country Link
US (1) US7050972B2 (ko)
EP (1) EP1334484B1 (ko)
JP (6) JP3983668B2 (ko)
KR (1) KR100551862B1 (ko)
CN (1) CN1232950C (ko)
AT (1) ATE267445T1 (ko)
AU (1) AU2002215282A1 (ko)
DE (1) DE60103424T2 (ko)
DK (1) DK1334484T3 (ko)
ES (1) ES2218462T3 (ko)
HK (1) HK1058096A1 (ko)
PT (1) PT1334484E (ko)
SE (1) SE0004187D0 (ko)
TR (1) TR200401631T4 (ko)
WO (1) WO2002041302A1 (ko)

Families Citing this family (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPR433901A0 (en) 2001-04-10 2001-05-17 Lake Technology Limited High frequency signal construction method
SE0202159D0 (sv) 2001-07-10 2002-07-09 Coding Technologies Sweden Ab Efficientand scalable parametric stereo coding for low bitrate applications
US8605911B2 (en) 2001-07-10 2013-12-10 Dolby International Ab Efficient and scalable parametric stereo coding for low bitrate audio coding applications
US7469206B2 (en) 2001-11-29 2008-12-23 Coding Technologies Ab Methods for improving high frequency reconstruction
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
US20030187663A1 (en) 2002-03-28 2003-10-02 Truman Michael Mead Broadband frequency translation for high frequency regeneration
KR100605824B1 (ko) 2002-05-13 2006-07-31 삼성전자주식회사 부호분할다중접속 이동통신시스템의 방송서비스 방법
US7447631B2 (en) 2002-06-17 2008-11-04 Dolby Laboratories Licensing Corporation Audio coding system using spectral hole filling
US7502743B2 (en) 2002-09-04 2009-03-10 Microsoft Corporation Multi-channel audio encoding and decoding with multi-channel transform selection
SE0202770D0 (sv) 2002-09-18 2002-09-18 Coding Technologies Sweden Ab Method for reduction of aliasing introduces by spectral envelope adjustment in real-valued filterbanks
US7318027B2 (en) 2003-02-06 2008-01-08 Dolby Laboratories Licensing Corporation Conversion of synthesized spectral components for encoding and low-complexity transcoding
FR2852172A1 (fr) * 2003-03-04 2004-09-10 France Telecom Procede et dispositif de reconstruction spectrale d'un signal audio
JP2004309921A (ja) * 2003-04-09 2004-11-04 Sony Corp 符号化装置、符号化方法及びプログラム
US7318035B2 (en) * 2003-05-08 2008-01-08 Dolby Laboratories Licensing Corporation Audio coding systems and methods using spectral component coupling and spectral component regeneration
DE10328777A1 (de) * 2003-06-25 2005-01-27 Coding Technologies Ab Vorrichtung und Verfahren zum Codieren eines Audiosignals und Vorrichtung und Verfahren zum Decodieren eines codierten Audiosignals
US20050004793A1 (en) * 2003-07-03 2005-01-06 Pasi Ojala Signal adaptation for higher band coding in a codec utilizing band split coding
US20050018796A1 (en) * 2003-07-07 2005-01-27 Sande Ravindra Kumar Method of combining an analysis filter bank following a synthesis filter bank and structure therefor
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
EP1864281A1 (en) * 2005-04-01 2007-12-12 QUALCOMM Incorporated Systems, methods, and apparatus for highband burst suppression
PL1875463T3 (pl) 2005-04-22 2019-03-29 Qualcomm Incorporated Układy, sposoby i urządzenie do wygładzania współczynnika wzmocnienia
JP4907522B2 (ja) * 2005-04-28 2012-03-28 パナソニック株式会社 音声符号化装置および音声符号化方法
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
US7831434B2 (en) * 2006-01-20 2010-11-09 Microsoft Corporation Complex-transform channel coding with extended-band frequency coding
US8190425B2 (en) * 2006-01-20 2012-05-29 Microsoft Corporation Complex cross-correlation parameters for multi-channel audio
US7953604B2 (en) * 2006-01-20 2011-05-31 Microsoft Corporation Shape and scale parameters for extended-band frequency coding
US20080109215A1 (en) * 2006-06-26 2008-05-08 Chi-Min Liu High frequency reconstruction by linear extrapolation
JP2010503881A (ja) * 2006-09-13 2010-02-04 テレフオンアクチーボラゲット エル エム エリクソン（パブル） 音声・音響送信器及び受信器のための方法及び装置
JP4918841B2 (ja) * 2006-10-23 2012-04-18 富士通株式会社 符号化システム
US8295507B2 (en) * 2006-11-09 2012-10-23 Sony Corporation Frequency band extending apparatus, frequency band extending method, player apparatus, playing method, program and recording medium
KR101355376B1 (ko) * 2007-04-30 2014-01-23 삼성전자주식회사 고주파수 영역 부호화 및 복호화 방법 및 장치
US7885819B2 (en) 2007-06-29 2011-02-08 Microsoft Corporation Bitstream syntax for multi-process audio decoding
MX2010001394A (es) * 2007-08-27 2010-03-10 Ericsson Telefon Ab L M Frecuencia de transicion adaptiva entre llenado de ruido y extension de anchura de banda.
KR101235830B1 (ko) * 2007-12-06 2013-02-21 한국전자통신연구원 음성코덱의 품질향상장치 및 그 방법
EP2077551B1 (en) 2008-01-04 2011-03-02 Dolby Sweden AB Audio encoder and decoder
CN101281748B (zh) * 2008-05-14 2011-06-15 武汉大学 用编码索引实现的空缺子带填充方法及编码索引生成方法
WO2010003521A1 (en) 2008-07-11 2010-01-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method and discriminator for classifying different segments of a signal
ES2396927T3 (es) * 2008-07-11 2013-03-01 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Aparato y procedimiento para decodificar una señal de audio codificada
EP3246918B1 (en) 2008-07-11 2023-06-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio decoder, method for decoding an audio signal and computer program
MX2011000367A (es) 2008-07-11 2011-03-02 Fraunhofer Ges Forschung Un aparato y un metodo para calcular una cantidad de envolventes espectrales.
US8326640B2 (en) * 2008-08-26 2012-12-04 Broadcom Corporation Method and system for multi-band amplitude estimation and gain control in an audio CODEC
JP2010079275A (ja) * 2008-08-29 2010-04-08 Sony Corp 周波数帯域拡大装置及び方法、符号化装置及び方法、復号化装置及び方法、並びにプログラム
PL4224475T3 (pl) 2008-12-15 2024-03-18 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Dekoder powiększania szerokości pasma audio, powiązany sposób oraz program komputerowy
JP5446258B2 (ja) * 2008-12-26 2014-03-19 富士通株式会社 オーディオ符号化装置
BR122019023704B1 (pt) 2009-01-16 2020-05-05 Dolby Int Ab sistema para gerar um componente de frequência alta de um sinal de áudio e método para realizar reconstrução de frequência alta de um componente de frequência alta
JP4977157B2 (ja) * 2009-03-06 2012-07-18 株式会社エヌ・ティ・ティ・ドコモ 音信号符号化方法、音信号復号方法、符号化装置、復号装置、音信号処理システム、音信号符号化プログラム、及び、音信号復号プログラム
CN105225667B (zh) 2009-03-17 2019-04-05 杜比国际公司 编码器系统、解码器系统、编码方法和解码方法
JP4932917B2 (ja) * 2009-04-03 2012-05-16 株式会社エヌ・ティ・ティ・ドコモ 音声復号装置、音声復号方法、及び音声復号プログラム
US11657788B2 (en) 2009-05-27 2023-05-23 Dolby International Ab Efficient combined harmonic transposition
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
CN102754159B (zh) 2009-10-19 2016-08-24 杜比国际公司 指示音频对象的部分的元数据时间标记信息
JP5554876B2 (ja) * 2010-04-16 2014-07-23 フラウンホーファーゲゼルシャフト ツール フォルデルング デル アンゲヴァンテン フォルシユング エー．フアー． ガイドされた帯域幅拡張およびブラインド帯域幅拡張を用いて広帯域信号を生成するため装置、方法およびコンピュータプログラム
US12002476B2 (en) 2010-07-19 2024-06-04 Dolby International Ab Processing of audio signals during high frequency reconstruction
BR112012024360B1 (pt) * 2010-07-19 2020-11-03 Dolby International Ab sistema configurado para gerar uma pluralidade de sinais de áudio de sub-banda de alta frequência, decodificador de áudio, codificador, método para gerar uma pluralidade de sinais de sub-banda de alta frequência, método para decodificar um fluxo de bits, método para gerar dados de controle a partir de um sinal de áudio e meio de armazenamento
EP2466580A1 (en) * 2010-12-14 2012-06-20 Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. Encoder and method for predictively encoding, decoder and method for decoding, system and method for predictively encoding and decoding and predictively encoded information signal
CN102208188B (zh) * 2011-07-13 2013-04-17 华为技术有限公司 音频信号编解码方法和设备
US9437213B2 (en) * 2012-03-05 2016-09-06 Malaspina Labs (Barbados) Inc. Voice signal enhancement
TWI591620B (zh) 2012-03-21 2017-07-11 三星電子股份有限公司 產生高頻雜訊的方法
EP2682941A1 (de) * 2012-07-02 2014-01-08 Technische Universität Ilmenau Vorrichtung, Verfahren und Computerprogramm für frei wählbare Frequenzverschiebungen in der Subband-Domäne
WO2014068817A1 (ja) * 2012-10-31 2014-05-08 パナソニック株式会社 オーディオ信号符号化装置及びオーディオ信号復号装置
WO2014118152A1 (en) 2013-01-29 2014-08-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Low-frequency emphasis for lpc-based coding in frequency domain
KR101632238B1 (ko) * 2013-04-05 2016-06-21 돌비 인터네셔널 에이비 인터리브된 파형 코딩을 위한 오디오 인코더 및 디코더
TWI546799B (zh) * 2013-04-05 2016-08-21 杜比國際公司 音頻編碼器及解碼器
EP4300488A3 (en) 2013-04-05 2024-02-28 Dolby International AB Stereo audio encoder and decoder
JP6305694B2 (ja) * 2013-05-31 2018-04-04 クラリオン株式会社 信号処理装置及び信号処理方法
WO2014202770A1 (en) * 2013-06-21 2014-12-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method and apparatus for obtaining spectrum coefficients for a replacement frame of an audio signal, audio decoder, audio receiver and system for transmitting audio signals
RU2665281C2 (ru) 2013-09-12 2018-08-28 Долби Интернэшнл Аб Временное согласование данных обработки на основе квадратурного зеркального фильтра
CN104681029B (zh) * 2013-11-29 2018-06-05 华为技术有限公司 立体声相位参数的编码方法及装置
US20150194157A1 (en) * 2014-01-06 2015-07-09 Nvidia Corporation System, method, and computer program product for artifact reduction in high-frequency regeneration audio signals
BR112018067944B1 (pt) * 2016-03-07 2024-03-05 Fraunhofer - Gesellschaft Zur Förderung Der Angewandten Forschung E.V Unidade de ocultação de erro, método de ocultação de erro,decodificador de áudio, codificador de áudio, método para fornecer uma representação de áudio codificada e sistema
EP4091332A1 (en) 2020-01-15 2022-11-23 Dolby International AB Adaptive streaming of media content with bitrate switching
MX2023001152A (es) * 2020-07-30 2023-04-05 Fraunhofer Ges Forschung Aparato, metodo y programa de computadora para codificar una se?al de audio o para decodificar una escena de audio codificada.

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4158751A (en) * 1978-02-06 1979-06-19 Bode Harald E W Analog speech encoder and decoder
JPS595297A (ja) * 1982-07-01 1984-01-12 日本電気株式会社 帯域分割型ボコ−ダ
NL8700985A (nl) * 1987-04-27 1988-11-16 Philips Nv Systeem voor sub-band codering van een digitaal audiosignaal.
US5285498A (en) * 1992-03-02 1994-02-08 At&T Bell Laboratories Method and apparatus for coding audio signals based on perceptual model
JP3297750B2 (ja) * 1992-03-18 2002-07-02 ソニー株式会社 符号化方法
JP3218679B2 (ja) * 1992-04-15 2001-10-15 ソニー株式会社 高能率符号化方法
US5404377A (en) * 1994-04-08 1995-04-04 Moses; Donald W. Simultaneous transmission of data and audio signals by means of perceptual coding
JP3277692B2 (ja) * 1994-06-13 2002-04-22 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記録媒体
JP3557674B2 (ja) * 1994-12-15 2004-08-25 ソニー株式会社 高能率符号化方法及び装置
US5646961A (en) * 1994-12-30 1997-07-08 Lucent Technologies Inc. Method for noise weighting filtering
JPH09172376A (ja) * 1995-12-20 1997-06-30 Hitachi Ltd 量子化ビット割当て装置
JP3255022B2 (ja) * 1996-07-01 2002-02-12 日本電気株式会社 適応変換符号化方式および適応変換復号方式
US6490562B1 (en) * 1997-04-09 2002-12-03 Matsushita Electric Industrial Co., Ltd. Method and system for analyzing voices
SE512719C2 (sv) * 1997-06-10 2000-05-02 Lars Gustaf Liljeryd En metod och anordning för reduktion av dataflöde baserad på harmonisk bandbreddsexpansion
US5928342A (en) * 1997-07-02 1999-07-27 Creative Technology Ltd. Audio effects processor integrated on a single chip with a multiport memory onto which multiple asynchronous digital sound samples can be concurrently loaded
DE19730130C2 (de) * 1997-07-14 2002-02-28 Fraunhofer Ges Forschung Verfahren zum Codieren eines Audiosignals
US6385548B2 (en) * 1997-12-12 2002-05-07 Motorola, Inc. Apparatus and method for detecting and characterizing signals in a communication system
US6757395B1 (en) * 2000-01-12 2004-06-29 Sonic Innovations, Inc. Noise reduction apparatus and method
US20020116197A1 (en) * 2000-10-02 2002-08-22 Gamze Erten Audio visual speech processing

Also Published As

Publication number Publication date
WO2002041302A1 (en) 2002-05-23
DE60103424T2 (de) 2005-06-16
PT1334484E (pt) 2004-09-30
JP6592148B2 (ja) 2019-10-16
DE60103424D1 (de) 2004-06-24
AU2002215282A1 (en) 2002-05-27
ES2218462T3 (es) 2004-11-16
JP4991397B2 (ja) 2012-08-01
JP3983668B2 (ja) 2007-09-26
HK1058096A1 (en) 2004-04-30
DK1334484T3 (da) 2004-08-09
KR100551862B1 (ko) 2006-02-13
JP2007293354A (ja) 2007-11-08
JP5933965B2 (ja) 2016-06-15
CN1232950C (zh) 2005-12-21
EP1334484B1 (en) 2004-05-19
JP2018185530A (ja) 2018-11-22
JP6207404B2 (ja) 2017-10-04
JP2016189015A (ja) 2016-11-04
EP1334484A1 (en) 2003-08-13
KR20030076576A (ko) 2003-09-26
ATE267445T1 (de) 2004-06-15
JP2012093774A (ja) 2012-05-17
JP6368740B2 (ja) 2018-08-01
JP2014089472A (ja) 2014-05-15
JP2004514180A (ja) 2004-05-13
US20020103637A1 (en) 2002-08-01
US7050972B2 (en) 2006-05-23
TR200401631T4 (tr) 2004-09-21
CN1475010A (zh) 2004-02-11

Similar Documents

Publication Publication Date Title
SE0004187D0 (sv) Enhancing the performance of coding systems that use high frequency reconstruction methods
US9153240B2 (en) Transform coding of speech and audio signals
KR101083572B1 (ko) 넓은-뜻의 지각적 유사성을 이용하는 디지털 미디어스펙트럼 데이터의 효과적인 코딩
JP6117269B2 (ja) 過渡状態検出器およびオーディオ信号の符号化を支援する方法
KR100958144B1 (ko) 오디오 압축
ATE330311T1 (de) Vorrichtung zur erweiterung der bandbreite eines audiosignals
TWI536369B (zh) 用以基於線性預測編碼之於頻域中編碼的低頻率增強技術
JPH0856163A (ja) 適応的デジタルオーディオ符号化システム
KR940008316A (ko) 디지탈 신호 부호화 복호화 장치, 디지탈 신호 부호화 장치 및 디지탈 신호 복호화 장치
KR20080103088A (ko) 디코더 및 대응 디바이스에서 디지털 신호의 반향들의 안전한 구별과 감쇠를 위한 방법
JP2002544550A (ja) 符号化されたオーディオ信号中のエラーを隠蔽する方法と装置および符号化されたオーディオ信号を復号化する方法と装置
KR20100086000A (ko) 오디오 신호 처리 방법 및 장치
WO2005034080A3 (en) A method of making a window type decision based on mdct data in audio encoding
DE60128121D1 (de) Wahrnehmungsbezogen verbesserte aufbesserung kodierter akustischer signale
KR960009752A (ko) 동화상 부호화 방법 및 동화상 부호화 장치
KR100378796B1 (ko) 디지탈 오디오 부호화기 및 복호화 방법
US10186273B2 (en) Method and apparatus for encoding/decoding an audio signal
ES2400987T3 (es) Atenuación de pre-ecos en una señal de audio digital
KR20060036724A (ko) 오디오 신호 부호화 및 복호화 방법 및 그 장치
CN101228574A (zh) 一种控制前回声的编码和解码装置及方法
KR101387808B1 (ko) 가변 비트율을 갖는 잔차 신호 부호화를 이용한 고품질 다객체 오디오 부호화 및 복호화 장치
CN112995425B (zh) 一种等响度混音方法及装置
US10332527B2 (en) Method and apparatus for encoding and decoding audio signal
KR20080092823A (ko) 부호화/복호화 장치 및 방법
Rajani et al. Vocoder (LPC) Analysis by Variation of Input Parameters and Signals