HK1141149A1 - Method and apparatus for processing real-valued time domain signal - Google Patents

Method and apparatus for processing real-valued time domain signal

Info

Publication number
HK1141149A1
HK1141149A1 HK10107009.2A HK10107009A HK1141149A1 HK 1141149 A1 HK1141149 A1 HK 1141149A1 HK 10107009 A HK10107009 A HK 10107009A HK 1141149 A1 HK1141149 A1 HK 1141149A1
Authority
HK
Hong Kong
Prior art keywords
digital
filterbanks
time domain
domain signal
filter
Prior art date
Application number
HK10107009.2A
Other languages
English (en)
Inventor
Per Ekstrand
Original Assignee
Dolby Int 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 Dolby Int Ab filed Critical Dolby Int Ab
Publication of HK1141149A1 publication Critical patent/HK1141149A1/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H19/00—Networks using time-varying elements, e.g. N-path filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/0264—Filter sets with mutual related characteristics
    • H03H17/0266—Filter banks

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Holo Graphy (AREA)
  • Optical Filters (AREA)
  • Radio Relay Systems (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Networks Using Active Elements (AREA)
  • Gyroscopes (AREA)
  • Optical Communication System (AREA)
HK10107009.2A 2001-04-02 2010-07-20 Method and apparatus for processing real-valued time domain signal HK1141149A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0101175A SE0101175D0 (sv) 2001-04-02 2001-04-02 Aliasing reduction using complex-exponential-modulated filterbanks

Publications (1)

Publication Number Publication Date
HK1141149A1 true HK1141149A1 (en) 2010-10-29

Family

ID=20283644

Family Applications (3)

Application Number Title Priority Date Filing Date
HK04103405A HK1060450A1 (en) 2001-04-02 2004-05-14 Aliasing reduction using complex exponential modulated filterbanks
HK10107007.4A HK1142454A1 (en) 2001-04-02 2010-07-20 Analysis filter bank part and analysis filtering method
HK10107009.2A HK1141149A1 (en) 2001-04-02 2010-07-20 Method and apparatus for processing real-valued time domain signal

Family Applications Before (2)

Application Number Title Priority Date Filing Date
HK04103405A HK1060450A1 (en) 2001-04-02 2004-05-14 Aliasing reduction using complex exponential modulated filterbanks
HK10107007.4A HK1142454A1 (en) 2001-04-02 2010-07-20 Analysis filter bank part and analysis filtering method

Country Status (11)

Country Link
US (1) US7242710B2 (xx)
EP (2) EP1641120A3 (xx)
JP (2) JP3977744B2 (xx)
KR (1) KR100565821B1 (xx)
CN (4) CN101635563B (xx)
AT (1) ATE312433T1 (xx)
DE (1) DE60207841T2 (xx)
ES (1) ES2254666T3 (xx)
HK (3) HK1060450A1 (xx)
SE (1) SE0101175D0 (xx)
WO (1) WO2002080362A1 (xx)

Families Citing this family (74)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0202159D0 (sv) 2001-07-10 2002-07-09 Coding Technologies Sweden Ab Efficientand scalable parametric stereo coding for low bitrate applications
KR100648760B1 (ko) 2001-11-29 2006-11-23 코딩 테크놀러지스 에이비 고주파 재생 기술 향상을 위한 방법들 및 그를 수행하는 프로그램이 저장된 컴퓨터 프로그램 기록매체
KR100454886B1 (ko) * 2002-02-01 2004-11-06 한국과학기술원 독립 성분 분석을 이용한 여파기 적응 알고리즘의 필터뱅크 접근 방법
US6792057B2 (en) * 2002-08-29 2004-09-14 Bae Systems Information And Electronic Systems Integration Inc Partial band reconstruction of frequency channelized filters
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
US7372907B2 (en) * 2003-06-09 2008-05-13 Northrop Grumman Corporation Efficient and flexible oversampled filterbank with near perfect reconstruction constraint
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
US7333931B2 (en) * 2003-08-11 2008-02-19 Faculte Polytechnique De Mons Method for estimating resonance frequencies
CN101800049B (zh) * 2003-09-16 2012-05-23 松下电器产业株式会社 编码装置和译码装置
JP4396233B2 (ja) 2003-11-13 2010-01-13 パナソニック株式会社 複素指数変調フィルタバンクの信号分析方法、信号合成方法、そのプログラム及びその記録媒体
US6980933B2 (en) * 2004-01-27 2005-12-27 Dolby Laboratories Licensing Corporation Coding techniques using estimated spectral magnitude and phase derived from MDCT coefficients
US7450659B2 (en) * 2004-03-29 2008-11-11 Agilent Technologies, Inc. Digital modulator employing a polyphase up-converter structure
ATE453156T1 (de) * 2004-06-10 2010-01-15 Panasonic Corp System und verfahren für laufzeit-rekonfiguration
US7027942B1 (en) * 2004-10-26 2006-04-11 The Mitre Corporation Multirate spectral analyzer with adjustable time-frequency resolution
JP4645241B2 (ja) * 2005-03-10 2011-03-09 ヤマハ株式会社 音声処理装置およびプログラム
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
FR2888699A1 (fr) * 2005-07-13 2007-01-19 France Telecom Dispositif de codage/decodage hierachique
US7917561B2 (en) 2005-09-16 2011-03-29 Coding Technologies Ab Partially complex modulated filter bank
US8443026B2 (en) 2005-09-16 2013-05-14 Dolby International Ab Partially complex modulated filter bank
US8345890B2 (en) 2006-01-05 2013-01-01 Audience, Inc. System and method for utilizing inter-microphone level differences for speech enhancement
CN101401305B (zh) * 2006-01-27 2012-05-23 杜比国际公司 利用复调制滤波器组的滤波器、抽头产生器及滤波方法
US9185487B2 (en) 2006-01-30 2015-11-10 Audience, Inc. System and method for providing noise suppression utilizing null processing noise subtraction
US8194880B2 (en) 2006-01-30 2012-06-05 Audience, Inc. System and method for utilizing omni-directional microphones for speech enhancement
US8204252B1 (en) 2006-10-10 2012-06-19 Audience, Inc. System and method for providing close microphone adaptive array processing
US8744844B2 (en) 2007-07-06 2014-06-03 Audience, Inc. System and method for adaptive intelligent noise suppression
US8204253B1 (en) 2008-06-30 2012-06-19 Audience, Inc. Self calibration of audio device
USRE50009E1 (en) 2006-10-25 2024-06-11 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for generating audio subband values and apparatus and method for generating time-domain audio samples
EP3288027B1 (en) 2006-10-25 2021-04-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for generating complex-valued audio subband values
US8259926B1 (en) 2007-02-23 2012-09-04 Audience, Inc. System and method for 2-channel and 3-channel acoustic echo cancellation
US8189766B1 (en) 2007-07-26 2012-05-29 Audience, Inc. System and method for blind subband acoustic echo cancellation postfiltering
US8180064B1 (en) 2007-12-21 2012-05-15 Audience, Inc. System and method for providing voice equalization
US8194882B2 (en) 2008-02-29 2012-06-05 Audience, Inc. System and method for providing single microphone noise suppression fallback
US8355511B2 (en) 2008-03-18 2013-01-15 Audience, Inc. System and method for envelope-based acoustic echo cancellation
US8521530B1 (en) 2008-06-30 2013-08-27 Audience, Inc. System and method for enhancing a monaural audio signal
EP3598446B1 (en) 2009-01-16 2021-12-22 Dolby International AB Cross product enhanced harmonic transposition
TWI788752B (zh) * 2009-02-18 2023-01-01 瑞典商杜比國際公司 用於高頻重建或參數立體聲之複指數調變濾波器組
TWI597938B (zh) * 2009-02-18 2017-09-01 杜比國際公司 低延遲調變濾波器組
AU2015210384B2 (en) * 2009-02-18 2016-11-17 Dolby International Ab Apparatus and Method for Processing an Audio Signal
AU2016262695B2 (en) * 2009-02-18 2017-11-09 Dolby International Ab Low Delay Modulated Filter Bank
AU2013213663B2 (en) * 2009-02-18 2016-09-01 Dolby International Ab Low delay modulated filter bank
US8392200B2 (en) * 2009-04-14 2013-03-05 Qualcomm Incorporated Low complexity spectral band replication (SBR) filterbanks
TWI556227B (zh) 2009-05-27 2016-11-01 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
US8971551B2 (en) 2009-09-18 2015-03-03 Dolby International Ab Virtual bass synthesis using harmonic transposition
US11657788B2 (en) 2009-05-27 2023-05-23 Dolby International Ab Efficient combined harmonic transposition
JP5754899B2 (ja) 2009-10-07 2015-07-29 ソニー株式会社 復号装置および方法、並びにプログラム
US9838784B2 (en) 2009-12-02 2017-12-05 Knowles Electronics, Llc Directional audio capture
US9008329B1 (en) 2010-01-26 2015-04-14 Audience, Inc. Noise reduction using multi-feature cluster tracker
JP5609737B2 (ja) 2010-04-13 2014-10-22 ソニー株式会社 信号処理装置および方法、符号化装置および方法、復号装置および方法、並びにプログラム
JP5850216B2 (ja) 2010-04-13 2016-02-03 ソニー株式会社 信号処理装置および方法、符号化装置および方法、復号装置および方法、並びにプログラム
US8958510B1 (en) * 2010-06-10 2015-02-17 Fredric J. Harris Selectable bandwidth filter
JP6075743B2 (ja) 2010-08-03 2017-02-08 ソニー株式会社 信号処理装置および方法、並びにプログラム
JP5707842B2 (ja) 2010-10-15 2015-04-30 ソニー株式会社 符号化装置および方法、復号装置および方法、並びにプログラム
US9078077B2 (en) 2010-10-21 2015-07-07 Bose Corporation Estimation of synthetic audio prototypes with frequency-based input signal decomposition
US8675881B2 (en) 2010-10-21 2014-03-18 Bose Corporation Estimation of synthetic audio prototypes
FR2969804A1 (fr) * 2010-12-23 2012-06-29 France Telecom Filtrage perfectionne dans le domaine transforme.
KR20140084290A (ko) * 2011-10-27 2014-07-04 엘에스아이 코포레이션 디지털 전치 왜곡(dpd) 및 다른 비선형 애플리케이션을 위해 사용자 정의의 비선형 함수와 함께 명령어 집합을 갖는 프로세서
CN104704855B (zh) 2012-10-15 2016-08-24 杜比国际公司 用于减小基于换位器的虚拟低音系统中的延迟的系统及方法
US9536540B2 (en) 2013-07-19 2017-01-03 Knowles Electronics, Llc Speech signal separation and synthesis based on auditory scene analysis and speech modeling
EP3048609A4 (en) 2013-09-19 2017-05-03 Sony Corporation Encoding device and method, decoding device and method, and program
RU2667627C1 (ru) 2013-12-27 2018-09-21 Сони Корпорейшн Устройство и способ декодирования и программа
DE112015004185T5 (de) 2014-09-12 2017-06-01 Knowles Electronics, Llc Systeme und Verfahren zur Wiederherstellung von Sprachkomponenten
CN105281707B (zh) * 2015-09-09 2018-12-25 哈尔滨工程大学 一种动态可重构滤波器组的实现方法
JP6226945B2 (ja) * 2015-12-11 2017-11-08 アンリツ株式会社 マルチバンドイコライザ、それを用いた誤り率測定システム、誤り率測定装置、及び経路選択方法
US9820042B1 (en) 2016-05-02 2017-11-14 Knowles Electronics, Llc Stereo separation and directional suppression with omni-directional microphones
CN106982045B (zh) * 2017-03-17 2020-07-24 东南大学 一种基于socp优化的eir-cmfb结构的设计方法
TW202341126A (zh) * 2017-03-23 2023-10-16 瑞典商都比國際公司 用於音訊信號之高頻重建的諧波轉置器的回溯相容整合
CN107241107B (zh) * 2017-06-28 2019-03-29 电子科技大学 一种数字信道化滤波器组实现方法
US10638109B2 (en) * 2017-09-15 2020-04-28 Elphel, Inc. Method for the FPGA-based long range multi-view stereo with differential image rectification
TWI809289B (zh) 2018-01-26 2023-07-21 瑞典商都比國際公司 用於執行一音訊信號之高頻重建之方法、音訊處理單元及非暫時性電腦可讀媒體
CN108923785B (zh) * 2018-07-06 2022-03-01 中国电子科技集团公司第十四研究所 提高ddc后多通道合成信号信噪比的方法
CN109586688B (zh) * 2018-12-07 2022-10-18 桂林电子科技大学 基于迭代计算的时变可分非下采样图滤波器组的设计方法
RU2731602C1 (ru) * 2019-09-30 2020-09-04 Ордена трудового Красного Знамени федеральное государственное бюджетное образовательное учреждение высшего образования "Московский технический университет связи и информатики" (МТУСИ) Способ и устройство компандирования с предыскажением звуковых вещательных сигналов
CN112039497A (zh) * 2020-08-21 2020-12-04 安徽蓝讯电子科技有限公司 一种滤波器组多载波的子带滤波器
CN113098437B (zh) * 2021-04-02 2022-09-20 西安博瑞集信电子科技有限公司 一种可调宽频段滤波器组

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5285498A (en) * 1992-03-02 1994-02-08 At&T Bell Laboratories Method and apparatus for coding audio signals based on perceptual model
US5436940A (en) * 1992-06-11 1995-07-25 Massachusetts Institute Of Technology Quadrature mirror filter banks and method
JP3322479B2 (ja) 1994-05-13 2002-09-09 アルパイン株式会社 オーディオ装置
US5568142A (en) * 1994-10-20 1996-10-22 Massachusetts Institute Of Technology Hybrid filter bank analog/digital converter
DE69511064T2 (de) 1994-11-09 2000-02-24 Koninkl Philips Electronics Nv System und verfahren zur übertragung von bild- oder tonsignalen
JP3300561B2 (ja) 1995-02-28 2002-07-08 株式会社東芝 可変レート圧縮装置及び可変レート伸長装置
US5732189A (en) * 1995-12-22 1998-03-24 Lucent Technologies Inc. Audio signal coding with a signal adaptive filterbank
SE512719C2 (sv) * 1997-06-10 2000-05-02 Lars Gustaf Liljeryd En metod och anordning för reduktion av dataflöde baserad på harmonisk bandbreddsexpansion
JPH1198023A (ja) 1997-09-19 1999-04-09 Matsushita Electric Ind Co Ltd 信号符号化及び復号化装置
JP3164038B2 (ja) 1997-11-05 2001-05-08 日本電気株式会社 音声帯域分割復号装置
US6061705A (en) * 1998-01-21 2000-05-09 Telefonaktiebolaget Lm Ericsson Power and area efficient fast fourier transform processor
CN1078411C (zh) * 1998-04-07 2002-01-23 西安电子科技大学 带限信号时分多路复用传输方法
KR20000057739A (ko) * 1999-01-12 2000-09-25 비센트 비.인그라시아 서브대역 에코 소거기 및 그 방법
JP2001007769A (ja) 1999-04-22 2001-01-12 Matsushita Electric Ind Co Ltd 低遅延サブバンド分割／合成装置
US6771699B1 (en) * 1999-05-22 2004-08-03 International Business Machines Corporation Method for rapid carrier-frequency offset acquisition using a periodic training sequence
US6628781B1 (en) 1999-06-03 2003-09-30 Telefonaktiebolaget Lm Ericsson (Publ) Methods and apparatus for improved sub-band adaptive filtering in echo cancellation systems
EP1104101A3 (en) 1999-11-26 2005-02-02 Matsushita Electric Industrial Co., Ltd. Digital signal sub-band separating / combining apparatus achieving band-separation and band-combining filtering processing with reduced amount of group delay
WO2001041320A1 (en) * 1999-11-30 2001-06-07 Verance Corporation Oversampled filter bank for subband processing
WO2001071927A2 (en) * 2000-03-21 2001-09-27 Telcordia Technologies, Inc. Combined adaptive spatio-temporal processing and multi-user detection for cdma wireless systems
US6996198B2 (en) * 2000-10-27 2006-02-07 At&T Corp. Nonuniform oversampled filter banks for audio signal processing

Also Published As

Publication number Publication date
US20030016772A1 (en) 2003-01-23
DE60207841D1 (de) 2006-01-12
US7242710B2 (en) 2007-07-10
ATE312433T1 (de) 2005-12-15
CN1498456A (zh) 2004-05-19
JP2004533155A (ja) 2004-10-28
SE0101175D0 (sv) 2001-04-02
EP1641120A2 (en) 2006-03-29
EP1641120A3 (en) 2006-06-14
CN100555862C (zh) 2009-10-28
WO2002080362A1 (en) 2002-10-10
EP1374399B1 (en) 2005-12-07
JP2006203881A (ja) 2006-08-03
CN101635564B (zh) 2012-07-25
CN101635564A (zh) 2010-01-27
HK1060450A1 (en) 2004-08-06
CN101635563B (zh) 2012-12-19
CN101635563A (zh) 2010-01-27
CN1801616A (zh) 2006-07-12
KR20030083757A (ko) 2003-10-30
DE60207841T2 (de) 2006-08-10
KR100565821B1 (ko) 2006-03-30
EP1374399A1 (en) 2004-01-02
ES2254666T3 (es) 2006-06-16
HK1142454A1 (en) 2010-12-03
JP3977744B2 (ja) 2007-09-19

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