TWI325684B - Partially complex modulated filter bank and method thereof - Google Patents

Partially complex modulated filter bank and method thereof Download PDF

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Publication number
TWI325684B
TWI325684B TW095130732A TW95130732A TWI325684B TW I325684 B TWI325684 B TW I325684B TW 095130732 A TW095130732 A TW 095130732A TW 95130732 A TW95130732 A TW 95130732A TW I325684 B TWI325684 B TW I325684B
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TW
Taiwan
Prior art keywords
real
valued subband
filter bank
subband signal
modulated filter
Prior art date
Application number
TW095130732A
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English (en)
Other versions
TW200715707A (en
Inventor
Ekstrand Per
Villemoes Lars
Purnhagen Heiko
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Coding Tech Ab
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Publication date
Application filed by Coding Tech Ab filed Critical Coding Tech Ab
Publication of TW200715707A publication Critical patent/TW200715707A/zh
Application granted granted Critical
Publication of TWI325684B publication Critical patent/TWI325684B/zh

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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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Multimedia (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (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)
TW095130732A 2005-09-16 2006-08-21 Partially complex modulated filter bank and method thereof TWI325684B (en)

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 (2)

Publication Number Publication Date
TW200715707A TW200715707A (en) 2007-04-16
TWI325684B true TWI325684B (en) 2010-06-01

Family

ID=37027686

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095130732A TWI325684B (en) 2005-09-16 2006-08-21 Partially complex modulated filter bank and method thereof

Country Status (13)

Country Link
US (3) US7917561B2 (zh)
EP (1) EP1789954B1 (zh)
JP (5) JP4783377B2 (zh)
KR (5) KR101341365B1 (zh)
CN (5) CN101819778B (zh)
AT (1) ATE382933T1 (zh)
DE (1) DE602006000399T2 (zh)
ES (1) ES2300099T3 (zh)
HK (5) HK1103935A1 (zh)
MY (1) MY141053A (zh)
PL (1) PL1789954T3 (zh)
TW (1) TWI325684B (zh)
WO (1) WO2007031171A1 (zh)

Families Citing this family (50)

* 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
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
US8150065B2 (en) 2006-05-25 2012-04-03 Audience, Inc. System and method for processing an audio signal
US8849231B1 (en) 2007-08-08 2014-09-30 Audience, Inc. System and method for adaptive power control
US8949120B1 (en) 2006-05-25 2015-02-03 Audience, Inc. Adaptive noise cancelation
US8934641B2 (en) * 2006-05-25 2015-01-13 Audience, Inc. Systems and methods for reconstructing decomposed audio signals
ES2438176T3 (es) * 2006-07-04 2014-01-16 Electronics And Telecommunications Research Institute Método para restablecer una señal de audio de múltiples canales usando un decodificador de HE-AAC y un decodificador de MPEG surround
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
US8143620B1 (en) 2007-12-21 2012-03-27 Audience, Inc. System and method for adaptive classification of audio sources
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
US8774423B1 (en) 2008-06-30 2014-07-08 Audience, Inc. System and method for controlling adaptivity of signal modification using a phantom coefficient
EP2377123B1 (en) 2008-12-19 2014-10-29 Dolby International AB Method and apparatus for applying reverb to a multi-channel audio signal using spatial cue parameters
TWI559680B (zh) 2009-02-18 2016-11-21 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
PL3564954T3 (pl) 2010-01-19 2021-04-06 Dolby International Ab Ulepszona transpozycja harmonicznych oparta na bloku podpasma
US8718290B2 (en) 2010-01-26 2014-05-06 Audience, Inc. Adaptive noise reduction using level cues
US9008329B1 (en) 2010-01-26 2015-04-14 Audience, Inc. Noise reduction using multi-feature cluster tracker
EP2375409A1 (en) * 2010-04-09 2011-10-12 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio encoder, audio decoder and related methods for processing multi-channel audio signals using complex prediction
US9378754B1 (en) 2010-04-28 2016-06-28 Knowles Electronics, Llc Adaptive spatial classifier for multi-microphone systems
BR122021003887B1 (pt) 2010-08-12 2021-08-24 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E. V. Reamostrar sinais de saída de codecs de áudio com base em qmf
CN103918029B (zh) 2011-11-11 2016-01-20 杜比国际公司 使用过采样谱带复制的上采样
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 (en) 2012-09-27 2017-03-29 Huawei Technologies Co., Ltd. Adaptive filtering method and system based on error sub-band
US9536540B2 (en) 2013-07-19 2017-01-03 Knowles Electronics, Llc Speech signal separation and synthesis based on auditory scene analysis and speech modeling
WO2015041477A1 (ko) 2013-09-17 2015-03-26 주식회사 윌러스표준기술연구소 오디오 신호 처리 방법 및 장치
US10204630B2 (en) 2013-10-22 2019-02-12 Electronics And Telecommunications Research Instit Ute Method for generating filter for audio signal and parameterizing device therefor
BR112016014892B1 (pt) 2013-12-23 2022-05-03 Gcoa Co., Ltd. Método e aparelho para processamento de sinal de áudio
EP4294055A1 (en) 2014-03-19 2023-12-20 Wilus Institute of Standards and Technology Inc. Audio signal processing method and apparatus
US11025230B2 (en) 2014-03-21 2021-06-01 Dynaspot Corp. 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
US9941862B2 (en) 2014-03-21 2018-04-10 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
CN108966111B (zh) 2014-04-02 2021-10-26 韦勒斯标准与技术协会公司 音频信号处理方法和装置
WO2015189533A1 (en) * 2014-06-10 2015-12-17 Meridian Audio Limited Digital encapsulation of audio signals
CN107112025A (zh) 2014-09-12 2017-08-29 美商楼氏电子有限公司 用于恢复语音分量的***和方法
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
WO2019235072A1 (ja) 2018-06-06 2019-12-12 富士フイルム株式会社 組成物、ハードコートフィルム、ハードコートフィルムを備えた物品、及び画像表示装置

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
US7555434B2 (en) * 2002-07-19 2009-06-30 Nec Corporation Audio decoding device, decoding method, and program
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
EP1527442B1 (en) * 2002-08-01 2006-04-05 Matsushita Electric Industrial Co., Ltd. Audio decoding apparatus and audio decoding method based on spectral band replication
BRPI0306434B1 (pt) * 2002-09-19 2018-06-12 Nec Corporation Aparelho e método de decodificação de áudio
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***及方法
US8311809B2 (en) 2003-04-17 2012-11-13 Koninklijke Philips Electronics N.V. Converting decoded sub-band signal into a stereo signal
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
HK1146327A1 (en) 2011-05-20
US8180818B2 (en) 2012-05-15
MY141053A (en) 2010-02-25
PL1789954T3 (pl) 2008-06-30
CN101819780B (zh) 2011-12-14
DE602006000399D1 (de) 2008-02-14
ES2300099T3 (es) 2008-06-01
CN101031962B (zh) 2011-12-07
HK1147838A1 (en) 2011-08-19
HK1147837A1 (en) 2011-08-19
EP1789954B1 (en) 2008-01-02
CN101819779A (zh) 2010-09-01
JP5209033B2 (ja) 2013-06-12
JP5209034B2 (ja) 2013-06-12
KR20090028845A (ko) 2009-03-19
JP4783377B2 (ja) 2011-09-28
CN101819780A (zh) 2010-09-01
KR101190775B1 (ko) 2012-10-16
CN101031962A (zh) 2007-09-05
JP2011090317A (ja) 2011-05-06
US7917561B2 (en) 2011-03-29
US20110106541A1 (en) 2011-05-05
DE602006000399T2 (de) 2008-12-18
JP2011090316A (ja) 2011-05-06
JP5209032B2 (ja) 2013-06-12
CN101819779B (zh) 2011-12-14
TW200715707A (en) 2007-04-16
WO2007031171A1 (en) 2007-03-22
KR101304963B1 (ko) 2013-09-06
KR100921905B1 (ko) 2009-10-16
KR101359360B1 (ko) 2014-02-07
CN101819778B (zh) 2013-07-31
JP5209031B2 (ja) 2013-06-12
JP2008518257A (ja) 2008-05-29
HK1147836A1 (en) 2011-08-19
KR20100038234A (ko) 2010-04-13
CN101819778A (zh) 2010-09-01
EP1789954A1 (en) 2007-05-30
KR20070088550A (ko) 2007-08-29
HK1103935A1 (en) 2007-12-28
JP2011102981A (ja) 2011-05-26
KR20100034056A (ko) 2010-03-31
CN101777348A (zh) 2010-07-14
KR20100038455A (ko) 2010-04-14
JP2011070213A (ja) 2011-04-07
ATE382933T1 (de) 2008-01-15
US8180819B2 (en) 2012-05-15
US20100228555A1 (en) 2010-09-09
CN101777348B (zh) 2012-10-10
US20070100612A1 (en) 2007-05-03
KR101341365B1 (ko) 2013-12-13

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