PL1789954T3 - Bank filtrów częściowo modulowanych funkcjami zespolonymi - Google Patents

Bank filtrów częściowo modulowanych funkcjami zespolonymi

Info

Publication number
PL1789954T3
PL1789954T3 PL06776967T PL06776967T PL1789954T3 PL 1789954 T3 PL1789954 T3 PL 1789954T3 PL 06776967 T PL06776967 T PL 06776967T PL 06776967 T PL06776967 T PL 06776967T PL 1789954 T3 PL1789954 T3 PL 1789954T3
Authority
PL
Poland
Prior art keywords
real
valued subband
filter bank
subband signal
modulated filter
Prior art date
Application number
PL06776967T
Other languages
English (en)
Inventor
Per Ekstrand
Lars Villemoes
Heiko Purnhagen
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 PL1789954T3 publication Critical patent/PL1789954T3/pl

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)
PL06776967T 2005-09-16 2006-08-18 Bank filtrów częściowo modulowanych funkcjami zespolonymi PL1789954T3 (pl)

Applications Claiming Priority (5)

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
EP06776967A EP1789954B1 (en) 2005-09-16 2006-08-18 Partially complex modulated filter bank
PCT/EP2006/008174 WO2007031171A1 (en) 2005-09-16 2006-08-18 Partially complex modulated filter bank

Publications (1)

Publication Number Publication Date
PL1789954T3 true PL1789954T3 (pl) 2008-06-30

Family

ID=37027686

Family Applications (1)

Application Number Title Priority Date Filing Date
PL06776967T PL1789954T3 (pl) 2005-09-16 2006-08-18 Bank filtrów częściowo modulowanych funkcjami zespolonymi

Country Status (12)

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

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US8194882B2 (en) 2008-02-29 2012-06-05 Audience, Inc. System and method for providing single microphone noise suppression fallback
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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
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US9008329B1 (en) 2010-01-26 2015-04-14 Audience, Inc. Noise reduction using multi-feature cluster tracker
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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
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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
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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
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Also Published As

Publication number Publication date
WO2007031171A1 (en) 2007-03-22
CN101819780A (zh) 2010-09-01
EP1789954B1 (en) 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
ATE382933T1 (de) 2008-01-15
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
TW200715707A (en) 2007-04-16
EP1789954A1 (en) 2007-05-30
US20110106541A1 (en) 2011-05-05
CN101031962B (zh) 2011-12-07

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