ATE382933T1 - Teilweise komplexmodulierte filterbank - Google Patents

Teilweise komplexmodulierte filterbank

Info

Publication number
ATE382933T1
ATE382933T1 AT06776967T AT06776967T ATE382933T1 AT E382933 T1 ATE382933 T1 AT E382933T1 AT 06776967 T AT06776967 T AT 06776967T AT 06776967 T AT06776967 T AT 06776967T AT E382933 T1 ATE382933 T1 AT E382933T1
Authority
AT
Austria
Prior art keywords
real
valued subband
filter bank
subband signal
modulated filter
Prior art date
Application number
AT06776967T
Other languages
English (en)
Inventor
Per Ekstrand
Lars Villemoes
Heiko Purnhagen
Original Assignee
Coding Tech 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 Tech Ab filed Critical Coding Tech Ab
Application granted granted Critical
Publication of ATE382933T1 publication Critical patent/ATE382933T1/de

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
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0204—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
    • G10L19/0208—Subband vocoders
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Human Computer Interaction (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Networks Using Active Elements (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Electrotherapy Devices (AREA)
AT06776967T 2005-09-16 2006-08-18 Teilweise komplexmodulierte filterbank ATE382933T1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0502049 2005-09-16
US73368205P 2005-11-03 2005-11-03
US11/463,263 US7917561B2 (en) 2005-09-16 2006-08-08 Partially complex modulated filter bank

Publications (1)

Publication Number Publication Date
ATE382933T1 true ATE382933T1 (de) 2008-01-15

Family

ID=37027686

Family Applications (1)

Application Number Title Priority Date Filing Date
AT06776967T ATE382933T1 (de) 2005-09-16 2006-08-18 Teilweise komplexmodulierte filterbank

Country Status (12)

Country Link
US (3) US7917561B2 (de)
EP (1) EP1789954B1 (de)
JP (5) JP4783377B2 (de)
KR (5) KR101359360B1 (de)
CN (5) CN101819779B (de)
AT (1) ATE382933T1 (de)
DE (1) DE602006000399T2 (de)
ES (1) ES2300099T3 (de)
MY (1) MY141053A (de)
PL (1) PL1789954T3 (de)
TW (1) TWI325684B (de)
WO (1) WO2007031171A1 (de)

Families Citing this family (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8443026B2 (en) 2005-09-16 2013-05-14 Dolby International Ab Partially complex modulated filter bank
US7917561B2 (en) * 2005-09-16 2011-03-29 Coding Technologies Ab Partially complex modulated filter bank
US7720677B2 (en) 2005-11-03 2010-05-18 Coding Technologies Ab Time warped modified transform coding of audio signals
US8345890B2 (en) 2006-01-05 2013-01-01 Audience, Inc. System and method for utilizing inter-microphone level differences for speech enhancement
US8194880B2 (en) 2006-01-30 2012-06-05 Audience, Inc. System and method for utilizing omni-directional microphones for speech enhancement
US8744844B2 (en) 2007-07-06 2014-06-03 Audience, Inc. System and method for adaptive intelligent noise suppression
US8204252B1 (en) 2006-10-10 2012-06-19 Audience, Inc. System and method for providing close microphone adaptive array processing
US9185487B2 (en) 2006-01-30 2015-11-10 Audience, Inc. System and method for providing noise suppression utilizing null processing noise subtraction
US8934641B2 (en) * 2006-05-25 2015-01-13 Audience, Inc. Systems and methods for reconstructing decomposed audio signals
US8150065B2 (en) 2006-05-25 2012-04-03 Audience, Inc. System and method for processing an audio signal
US8949120B1 (en) 2006-05-25 2015-02-03 Audience, Inc. Adaptive noise cancelation
US8204253B1 (en) 2008-06-30 2012-06-19 Audience, Inc. Self calibration of audio device
US8849231B1 (en) 2007-08-08 2014-09-30 Audience, Inc. System and method for adaptive power control
CN101578654B (zh) * 2006-07-04 2013-04-24 韩国电子通信研究院 用于恢复多通道音频信号的设备和方法
US9496850B2 (en) * 2006-08-04 2016-11-15 Creative Technology Ltd Alias-free subband processing
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
US8143620B1 (en) 2007-12-21 2012-03-27 Audience, Inc. System and method for adaptive classification of audio sources
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
US8774423B1 (en) 2008-06-30 2014-07-08 Audience, Inc. System and method for controlling adaptivity of signal modification using a phantom coefficient
US8965000B2 (en) 2008-12-19 2015-02-24 Dolby International Ab Method and apparatus for applying reverb to a multi-channel audio signal using spatial cue parameters
TWI458258B (zh) 2009-02-18 2014-10-21 杜比國際公司 低延遲調變濾波器組及用以設計該低延遲調變濾波器組之方法
US9838784B2 (en) 2009-12-02 2017-12-05 Knowles Electronics, Llc Directional audio capture
CA3107943C (en) 2010-01-19 2022-09-06 Dolby International Ab Improved subband block based harmonic transposition
US9008329B1 (en) 2010-01-26 2015-04-14 Audience, Inc. Noise reduction using multi-feature cluster tracker
US8718290B2 (en) 2010-01-26 2014-05-06 Audience, Inc. Adaptive noise reduction using level cues
EP2375409A1 (de) * 2010-04-09 2011-10-12 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audiocodierer, Audiodecodierer und zugehörige Verfahren zur Verarbeitung von Mehrkanal-Audiosignalen mithilfe einer komplexen Vorhersage
US9378754B1 (en) 2010-04-28 2016-06-28 Knowles Electronics, Llc Adaptive spatial classifier for multi-microphone systems
SG187743A1 (en) 2010-08-12 2013-03-28 Fraunhofer Ges Forschung Resampling output signals of qmf based audio codecs
USRE48258E1 (en) 2011-11-11 2020-10-13 Dolby International Ab Upsampling using oversampled SBR
TWI575962B (zh) * 2012-02-24 2017-03-21 杜比國際公司 部份複數處理之重疊濾波器組中的低延遲實數至複數轉換
EP2897334B1 (de) 2012-09-27 2017-03-29 Huawei Technologies Co., Ltd. Adaptives filterverfahren und system auf der basis von subbandfehlen
US9536540B2 (en) 2013-07-19 2017-01-03 Knowles Electronics, Llc Speech signal separation and synthesis based on auditory scene analysis and speech modeling
KR102159990B1 (ko) 2013-09-17 2020-09-25 주식회사 윌러스표준기술연구소 멀티미디어 신호 처리 방법 및 장치
US10580417B2 (en) 2013-10-22 2020-03-03 Industry-Academic Cooperation Foundation, Yonsei University Method and apparatus for binaural rendering audio signal using variable order filtering in frequency domain
KR101627657B1 (ko) 2013-12-23 2016-06-07 주식회사 윌러스표준기술연구소 오디오 신호의 필터 생성 방법 및 이를 위한 파라메터화 장치
KR101782917B1 (ko) 2014-03-19 2017-09-28 주식회사 윌러스표준기술연구소 오디오 신호 처리 방법 및 장치
US11025230B2 (en) 2014-03-21 2021-06-01 Dynaspot Corp. Filter that minimizes in-band noise and maximizes detection sensitivity of exponentially-modulated signals
US10320365B2 (en) 2014-03-21 2019-06-11 Dynaspot Corp. Filter that minimizes in-band noise and maximizes detection sensitivity of exponentially-modulated signals
WO2015143274A1 (en) * 2014-03-21 2015-09-24 Dynaspot Corp. A filter that minimizes in-band noise and maximizes detection sensitivity of exponentially-modulated signals
US11621701B2 (en) 2014-03-21 2023-04-04 Dynaspot Corp. Filter that minimizes in-band noise and maximizes detection sensitivity of exponentially-modulated signals
KR101856540B1 (ko) 2014-04-02 2018-05-11 주식회사 윌러스표준기술연구소 오디오 신호 처리 방법 및 장치
PL3155617T3 (pl) * 2014-06-10 2022-04-19 Mqa Limited Cyfrowa enkapsulacja sygnałów audio
WO2016040885A1 (en) 2014-09-12 2016-03-17 Audience, Inc. Systems and methods for restoration of speech components
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
US9820042B1 (en) 2016-05-02 2017-11-14 Knowles Electronics, Llc Stereo separation and directional suppression with omni-directional microphones

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3510573A1 (de) 1985-03-23 1986-09-25 Philips Patentverwaltung Digitale analyse-synthese-filterbank mit maximaler taktreduktion
US6947509B1 (en) * 1999-11-30 2005-09-20 Verance Corporation Oversampled filter bank for subband processing
SE0101175D0 (sv) 2001-04-02 2001-04-02 Coding Technologies Sweden Ab Aliasing reduction using complex-exponential-modulated filterbanks
JP4227772B2 (ja) 2002-07-19 2009-02-18 日本電気株式会社 オーディオ復号装置と復号方法およびプログラム
US7555434B2 (en) * 2002-07-19 2009-06-30 Nec Corporation Audio decoding device, decoding method, and program
BRPI0305710B1 (pt) * 2002-08-01 2017-11-07 Panasonic Corporation "apparatus and method of decoding of audio"
ES2259158T3 (es) * 2002-09-19 2006-09-16 Matsushita Electric Industrial Co., Ltd. Metodo y aparato decodificador audio.
CN1290036C (zh) * 2002-12-30 2006-12-13 国际商业机器公司 根据机器可读词典建立概念知识的计算机系统及方法
EP1618763B1 (de) 2003-04-17 2007-02-28 Koninklijke Philips Electronics N.V. Audiosignalsynthese
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
US7433463B2 (en) * 2004-08-10 2008-10-07 Clarity Technologies, Inc. Echo cancellation and noise reduction method
US7917561B2 (en) * 2005-09-16 2011-03-29 Coding Technologies Ab Partially complex modulated filter bank

Also Published As

Publication number Publication date
WO2007031171A1 (en) 2007-03-22
CN101819780A (zh) 2010-09-01
EP1789954B1 (de) 2008-01-02
US20070100612A1 (en) 2007-05-03
US8180818B2 (en) 2012-05-15
HK1147837A1 (en) 2011-08-19
KR100921905B1 (ko) 2009-10-16
CN101819779A (zh) 2010-09-01
KR20070088550A (ko) 2007-08-29
CN101777348B (zh) 2012-10-10
CN101819779B (zh) 2011-12-14
JP2011090317A (ja) 2011-05-06
JP2011070213A (ja) 2011-04-07
JP5209032B2 (ja) 2013-06-12
TWI325684B (en) 2010-06-01
US7917561B2 (en) 2011-03-29
JP5209034B2 (ja) 2013-06-12
CN101819780B (zh) 2011-12-14
DE602006000399T2 (de) 2008-12-18
CN101777348A (zh) 2010-07-14
JP4783377B2 (ja) 2011-09-28
JP2008518257A (ja) 2008-05-29
JP5209031B2 (ja) 2013-06-12
CN101819778B (zh) 2013-07-31
MY141053A (en) 2010-02-25
CN101819778A (zh) 2010-09-01
US8180819B2 (en) 2012-05-15
KR20100038234A (ko) 2010-04-13
HK1147838A1 (zh) 2011-08-19
JP2011102981A (ja) 2011-05-26
KR101190775B1 (ko) 2012-10-16
JP5209033B2 (ja) 2013-06-12
ES2300099T3 (es) 2008-06-01
KR20090028845A (ko) 2009-03-19
HK1146327A1 (en) 2011-05-20
JP2011090316A (ja) 2011-05-06
KR101341365B1 (ko) 2013-12-13
DE602006000399D1 (de) 2008-02-14
KR101359360B1 (ko) 2014-02-07
KR101304963B1 (ko) 2013-09-06
KR20100034056A (ko) 2010-03-31
HK1147836A1 (en) 2011-08-19
CN101031962A (zh) 2007-09-05
US20100228555A1 (en) 2010-09-09
HK1103935A1 (en) 2007-12-28
KR20100038455A (ko) 2010-04-14
PL1789954T3 (pl) 2008-06-30
TW200715707A (en) 2007-04-16
EP1789954A1 (de) 2007-05-30
US20110106541A1 (en) 2011-05-05
CN101031962B (zh) 2011-12-07

Similar Documents

Publication Publication Date Title
ATE382933T1 (de) Teilweise komplexmodulierte filterbank
TW200705388A (en) Systems, methods, and apparatus for speech signal filtering
SE0502492L (sv) Kontantdepineringsanordning och associerade förfaranden och anordningar
UA92742C2 (ru) Способ и устройство для кодирования речевых сигналов с расщеплением полосы
ATE496496T1 (de) Direktionale audiosignalverarbeitung unter verwendung einer überabgetasteten filterbank
AR080477A1 (es) Aparato y metodo para procesar una senal de audio entrada utilizando bancos de filtro en cascada
EP4372743A3 (de) Effiziente filterung mit einer komplex modulierten filterbank
BRPI0514620A (pt) método e aparelho para processar um conjunto de n sinais de áudio
MX2012007942A (es) Transposicion armonica mejorada basada en un bloque de subbanda.
BR0311314A (pt) Método e dispositivo para aperfeiçoamento da altura de som seletivo por frequência de fala sintetizada
TW200746046A (en) Audio decoding
ATE505900T1 (de) Drahtlose und dockbare audio-interposer-anordnung
WO2009044562A1 (ja) マイクロホンを用いた雑音抽出装置
WO2014070139A3 (en) Speech enhancement
TW200719011A (en) Liquid crystal apparatus and repair lines structure thereof
ATE500692T1 (de) Gehäuse und gehäusesystem für einen lautsprecher einer elektronischen vorrichtung
TW200633097A (en) On-chip circuit pad structure
MX387453B (es) Reducción de solapamiento en dominio de tiempo para bancos de filtros no uniformes que usan análisis espectral seguido por síntesis parcial.
WO2006096411A3 (en) Apparatus for separating particulates from a speaker system
SI1649652T1 (sl) Postopek za predfiltriranje učnih sekvenc v radiokomunikacijskem sistemu
ATE541411T1 (de) Tragbares lautsprechergehäuse
TW200737861A (en) Signal generating unit and signal receiving unit
ATE484328T1 (de) Membranplatte für eine filterpresse
CY1112183T1 (el) Κωδικοποιηση πληροφοριακων σηματων
ATE420540T1 (de) Verfahren zum dämpfen von störenden geräuschen und entsprechende höreinrichtung

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties