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
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
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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
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) KR101190775B1 (zh)
CN (5) CN101819779B (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
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
US8194880B2 (en) 2006-01-30 2012-06-05 Audience, Inc. System and method for utilizing omni-directional microphones for speech enhancement
US8934641B2 (en) * 2006-05-25 2015-01-13 Audience, Inc. Systems and methods for reconstructing decomposed audio signals
US8849231B1 (en) 2007-08-08 2014-09-30 Audience, Inc. System and method for adaptive power control
US8150065B2 (en) 2006-05-25 2012-04-03 Audience, Inc. System and method for processing an audio signal
US8204253B1 (en) 2008-06-30 2012-06-19 Audience, Inc. Self calibration of audio device
US8949120B1 (en) 2006-05-25 2015-02-03 Audience, Inc. Adaptive noise cancelation
EP2469511B1 (en) 2006-07-04 2015-03-18 Electronics and Telecommunications Research Institute Apparatus for restoring multi-channel audio signal using HE-AAC decoder and MPEG surround decoder
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
US8774423B1 (en) 2008-06-30 2014-07-08 Audience, Inc. System and method for controlling adaptivity of signal modification using a phantom coefficient
US8521530B1 (en) 2008-06-30 2013-08-27 Audience, Inc. System and method for enhancing a monaural audio signal
JP5524237B2 (ja) 2008-12-19 2014-06-18 ドルビー インターナショナル アーベー 空間キューパラメータを用いてマルチチャンネルオーディオ信号に反響を適用する方法と装置
TWI597939B (zh) 2009-02-18 2017-09-01 杜比國際公司 具相位偏移之複數值合成濾波器組
US9838784B2 (en) 2009-12-02 2017-12-05 Knowles Electronics, Llc Directional audio capture
ES2836756T3 (es) 2010-01-19 2021-06-28 Dolby Int Ab Transposición armónica basada en bloque de sub bandas mejorada
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 (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
MY156027A (en) 2010-08-12 2015-12-31 Fraunhofer Ges Forschung Resampling output signals of qmf based audio codecs
JP6155274B2 (ja) 2011-11-11 2017-06-28 ドルビー・インターナショナル・アーベー 過剰サンプリングされたｓｂｒを使ったアップサンプリング
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
EP3806498B1 (en) 2013-09-17 2023-08-30 Wilus Institute of Standards and Technology Inc. Method and apparatus for processing audio signal
CN105874819B (zh) 2013-10-22 2018-04-10 韩国电子通信研究院 生成用于音频信号的滤波器的方法及其参数化装置
KR101627661B1 (ko) 2013-12-23 2016-06-07 주식회사 윌러스표준기술연구소 오디오 신호 처리 방법, 이를 위한 파라메터화 장치 및 오디오 신호 처리 장치
CN106105269B (zh) 2014-03-19 2018-06-19 韦勒斯标准与技术协会公司 音频信号处理方法和设备
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
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
US10320365B2 (en) 2014-03-21 2019-06-11 Dynaspot Corp. Filter that minimizes in-band noise and maximizes detection sensitivity of exponentially-modulated signals
CN108307272B (zh) 2014-04-02 2021-02-02 韦勒斯标准与技术协会公司 音频信号处理方法和设备
EP3998605A1 (en) * 2014-06-10 2022-05-18 MQA Limited Digital encapsulation of audio signals
US9978388B2 (en) 2014-09-12 2018-05-22 Knowles Electronics, Llc 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
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
KR100602975B1 (ko) * 2002-07-19 2006-07-20 닛본 덴끼 가부시끼가이샤 오디오 복호 장치와 복호 방법 및 프로그램을 기록한 컴퓨터 판독가능 기록매체
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
US7069212B2 (en) 2002-09-19 2006-06-27 Matsushita Elecric Industrial Co., Ltd. Audio decoding apparatus and method for band expansion with aliasing adjustment
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
RU2005135650A (ru) 2003-04-17 2006-03-20 Конинклейке Филипс Электроникс Н.В. (Nl) Синтез аудиосигнала
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
CN101819778A (zh) 2010-09-01
US8180818B2 (en) 2012-05-15
KR101359360B1 (ko) 2014-02-07
EP1789954A1 (en) 2007-05-30
KR20090028845A (ko) 2009-03-19
JP5209034B2 (ja) 2013-06-12
CN101031962B (zh) 2011-12-07
JP2011090317A (ja) 2011-05-06
JP2008518257A (ja) 2008-05-29
CN101777348B (zh) 2012-10-10
CN101819779A (zh) 2010-09-01
JP5209031B2 (ja) 2013-06-12
KR20100038455A (ko) 2010-04-14
ATE382933T1 (de) 2008-01-15
CN101777348A (zh) 2010-07-14
JP5209032B2 (ja) 2013-06-12
HK1146327A1 (en) 2011-05-20
CN101819780B (zh) 2011-12-14
JP5209033B2 (ja) 2013-06-12
DE602006000399D1 (de) 2008-02-14
KR101341365B1 (ko) 2013-12-13
EP1789954B1 (en) 2008-01-02
CN101819778B (zh) 2013-07-31
US8180819B2 (en) 2012-05-15
CN101819780A (zh) 2010-09-01
CN101031962A (zh) 2007-09-05
US20100228555A1 (en) 2010-09-09
KR20100038234A (ko) 2010-04-13
WO2007031171A1 (en) 2007-03-22
MY141053A (en) 2010-02-25
KR100921905B1 (ko) 2009-10-16
JP2011070213A (ja) 2011-04-07
KR20100034056A (ko) 2010-03-31
JP4783377B2 (ja) 2011-09-28
US20070100612A1 (en) 2007-05-03
HK1147838A1 (en) 2011-08-19
HK1103935A1 (en) 2007-12-28
HK1147836A1 (en) 2011-08-19
US20110106541A1 (en) 2011-05-05
DE602006000399T2 (de) 2008-12-18
ES2300099T3 (es) 2008-06-01
JP2011102981A (ja) 2011-05-26
US7917561B2 (en) 2011-03-29
HK1147837A1 (en) 2011-08-19
JP2011090316A (ja) 2011-05-06
CN101819779B (zh) 2011-12-14
TW200715707A (en) 2007-04-16
KR101304963B1 (ko) 2013-09-06
KR101190775B1 (ko) 2012-10-16
KR20070088550A (ko) 2007-08-29
PL1789954T3 (pl) 2008-06-30

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